C521 Phosphor Bronze C Electrode


INTRODUCTION

Aufhauser Phosphor Bronze C Electrode has a higher tin content than the PhosBronze-A (EC518), resulting in weld metals of higher hardness, tensile and yield strengths. The weld deposits is ductile, strong and machinable as well as resistant to salt water corrosion. Post-weld heat treatment is desirable for maximum ductility, especially if the weld metal is cold worked. The Phosphor Bronze C provides a good color match to bronze and will work-harden.

APPLICATIONS

  • Joining base metals of similar composition: copper tin bronzes (Cu-Sn 6-8%), some brasses (Cu-Zn)
  • Repairing wrought bronzes (Cu-Sn) and surfacing on brasses, steels, and cast iron
  • Naval constructions and installations for sea water desalination, repair works

GENERAL INFORMATION

Chemical Composition
Copper Tin Iron Lead Phosphorus Aluminum Other*
Remainder 7.0-9.0 0.25 0.02 0.05-0.35 0.01 0.50

* Total other includes Zinc, Manganese, Silicon, Nickel = 0.50%

ADDITIONAL INFORMATION

Copper and its alloys require a relatively high heat input with shortened welding time. Higher preheat temperatures and faster welding rates than for steel are necessary.

PHYSICAL and MECHANICAL PROPERTIES
Machinability Excellent
Color Bronze
Current Used DC Reverse (electrode +)
Position(s): All
Tensile Strength 65,000 psi, max.
Elongation in 2" 45-50%
Brinell Hardness 85-100
 
SPECIFICATIONS MEET OR EXCEED
AWS A5.6 Class ECuSn-C
ASME SFA 5.6 ECuSn-C
MIL-E-23765/3 (MIL-CuSn-C)

 

STANDARD SIZES AND DIAMETERS
Diameters Lengths Amperage
3/32" 12" 70-90
1/8" 14" 90-110
5/32" 14" 110-130
3/16" 14" 110-130

 

COMMON BASE METALS
UNS DIN
C 50700 CuSn2
C 51100 CuSn4
C 51900 CuSn6
C 52100 CuSn8
  CuSn6Zn
C 52400 G-CuSn10

 

TYPICAL USES FOR ALLOY C521
Product Category Product Reason Category Reason
Architecture Bridge Bearing Plates Corrosion Resistance Corrosion Resistance
  Bridge Bearing Plates Forming Characteristics Formability
  Bridge Bearing Plates Friction & Wear Properties Wear Resistance
  Bridge Bearing Plates Mechanical Properties High Strength
  Bridge Bearing Plates Thermal Properties Resistance to Stress Relaxation
Building Thermostat Bellows Corrosion Resistance Corrosion Resistance
  Thermostat Bellows Forming Characteristics Formability
  Thermostat Bellows Mechanical Properties Fatigue Resistance
Consumer Coinage Conductivity (Electrical) Electrical Conductivity
  Coinage Friction & Wear Properties Wear Resistance
  Cymbals Appearance Color
  Cymbals Damping Characteristics Sonority
  Cymbals Mechanical Properties Strength
  Power Conductor for Electro-Surgical Pencil Conductivity (Electrical) Electrical Conductivity
  Power Conductor for Electro-Surgical Pencil Forming Characteristics Formability
  Power Conductor for Electro-Surgical Pencil Mechanical Properties Spring Properties
Electrical Cold Headed Parts Conductivity (Electrical) Electrical Conductivity
  Cold Headed Parts Conductivity (Thermal) Thermal Conductivity
  Cold Headed Parts Corrosion Resistance Corrosion Resistance
  Cold Headed Parts Mechanical Properties High Strength
  Cold Headed Parts Thermal Properties Resistance to Stress Relaxation
  Electrical Connectors Conductivity (Electrical) Electrical Conductivity
  Electrical Connectors Forming Characteristics Excellent Formability
  Electrical Connectors Mechanical Properties High Strength
  Electrical Connectors Thermal Properties Resistance to Stress Relaxation
  Electrical Flexing Contact Blades Conductivity (Electrical) Electrical Conductivity
  Electrical Flexing Contact Blades Corrosion Resistance Corrosion Resistance
  Electrical Flexing Contact Blades Mechanical Properties High Endurance Limit
  Electrical Flexing Contact Blades Mechanical Properties High Strength
  Electrical Flexing Contact Blades Thermal Properties Resistance to Stress Relaxation
  Electronic Connectors Conductivity (Electrical) Electrical Conductivity
  Electronic Connectors Forming Characteristics Excellent Formability
  Electronic Connectors Mechanical Properties High Strength
  Electronic Connectors Thermal Properties Resistance to Stress Relaxation
  Fuse Clips Conductivity (Electrical) Electrical Conductivity
  Fuse Clips Conductivity (Thermal) Thermal Conductivity
  Fuse Clips Corrosion Resistance Corrosion Resistance
  Fuse Clips Mechanical Properties High Strength
  Fuse Clips Solderability Solderability
  Fuse Clips Thermal Properties Resistance to Stress Relaxation
  Switch Parts Conductivity (Electrical) Electrical Conductivity
  Switch Parts Conductivity (Thermal) Thermal Conductivity
  Switch Parts Corrosion Resistance Corrosion Resistance
  Switch Parts Forming Characteristics Formability
  Switch Parts Mechanical Properties High Strength
  Switch Parts Solderability Solderability
  Switch Parts Thermal Properties Resistance to Stress Relaxation
  Wire Brushes Conductivity (Electrical) Electrical Conductivity
  Wire Brushes Conductivity (Thermal) Thermal Conductivity
  Wire Brushes Corrosion Resistance Corrosion Resistance
  Wire Brushes Forming Characteristics Formability
  Wire Brushes Friction & Wear Properties Wear Resistance
  Wire Brushes Mechanical Properties High Strength
Fasteners Cotter Pins Corrosion Resistance Corrosion Resistance
  Cotter Pins Forming Characteristics Formability
  Cotter Pins Mechanical Properties High Strength
  Cotter Pins Thermal Properties Resistance to Stress Relaxation
  Fasteners, Heavy Duty Corrosion Resistance Corrosion Resistance
  Fasteners, Heavy Duty Forming Characteristics Formability
  Fasteners, Heavy Duty Mechanical Properties High Strength
  Lock Washers Corrosion Resistance Corrosion Resistance
  Lock Washers Forming Characteristics Formability
  Lock Washers Mechanical Properties High Strength
  Lock Washers Thermal Properties Resistance to Stress Relaxation
Industrial Beater Bar Corrosion Resistance Corrosion Resistance
  Beater Bar Forming Characteristics Formability
  Beater Bar Friction & Wear Properties Wear Resistance
  Beater Bar Mechanical Properties High Strength
  Beater Bar Thermal Properties Resistance to Stress Relaxation
  Bellows Corrosion Resistance Corrosion Resistance
  Bellows Forming Characteristics Formability
  Bellows Mechanical Properties High Strength
  Bourdon Tubing Corrosion Resistance Corrosion Resistance
  Bourdon Tubing Forming Characteristics Formability
  Bourdon Tubing Mechanical Properties High Strength
  Bourdon Tubing Thermal Properties Resistance to Stress Relaxation
  Chemical hardware Corrosion Resistance Corrosion Resistance
  Chemical hardware Forming Characteristics Formability
  Chemical hardware Mechanical Properties High Strength
  Clips, Heavy Duty Conductivity (Electrical) Electrical Conductivity
  Clips, Heavy Duty Corrosion Resistance Corrosion Resistance
  Clips, Heavy Duty Mechanical Properties High Strength
  Clips, Heavy Duty Thermal Properties Resistance to Stress Relaxation
  Clutch Disks Corrosion Resistance Corrosion Resistance
  Clutch Disks Forming Characteristics Formability
  Clutch Disks Friction & Wear Properties Wear Resistance
  Clutch Disks Mechanical Properties High Strength
  Cold Headed Parts Conductivity (Electrical) Electrical Conductivity
  Cold Headed Parts Corrosion Resistance Corrosion Resistance
  Cold Headed Parts Forming Characteristics Formability
  Cold Headed Parts Mechanical Properties High Strength
  Cold Headed Parts Thermal Properties Resistance to Stress Relaxation
  Diaphragms Corrosion Resistance Corrosion Resistance
  Diaphragms Forming Characteristics Formability
  Diaphragms Mechanical Properties High Strength
  Diaphragms Thermal Properties Resistance to Stress Relaxation
  Doctor Blades, Paper Industry Corrosion Resistance Corrosion Resistance
  Doctor Blades, Paper Industry Friction & Wear Properties Good Wear Resistance
  Doctor Blades, Paper Industry Mechanical Properties High Strength
  Gears Corrosion Resistance Corrosion Resistance
  Gears Forming Characteristics Formability
  Gears Friction & Wear Properties Wear Resistance
  Gears Mechanical Properties High Strength
  Perforated Sheets Corrosion Resistance Corrosion Resistance
  Perforated Sheets Forming Characteristics Formability
  Perforated Sheets Mechanical Properties High Strength
  Pinions Corrosion Resistance Corrosion Resistance
  Pinions Forming Characteristics Formability
  Pinions Friction & Wear Properties Wear Resistance
  Pinions Mechanical Properties High Strength
  Pneumatic Hammers Corrosion Resistance Corrosion Resistance
  Pneumatic Hammers Forming Characteristics Formability
  Pneumatic Hammers Friction & Wear Properties Wear Resistance
  Pneumatic Hammers Mechanical Properties High Strength
  Pneumatic Hammers Thermal Properties Resistance to Stress Relaxation
  Sleeve Bushings Corrosion Resistance Corrosion Resistance
  Sleeve Bushings Forming Characteristics Formability
  Sleeve Bushings Friction & Wear Properties Wear Resistance
  Sleeve Bushings Mechanical Properties High Strength
  Springs, Heavy Duty Corrosion Resistance Corrosion Resistance
  Springs, Heavy Duty Forming Characteristics Formability
  Springs, Heavy Duty Mechanical Properties High Strength
  Springs, Heavy Duty Thermal Properties Resistance to Stress Relaxation
  Springs, Helical Extension Corrosion Resistance Corrosion Resistance
  Springs, Helical Extension Forming Characteristics Formability
  Springs, Helical Extension Mechanical Properties High Strength
  Springs, Helical Extension Thermal Properties Resistance to Stress Relaxation
  Springs, Helical Torsion Corrosion Resistance Corrosion Resistance
  Springs, Helical Torsion Forming Characteristics Formability
  Springs, Helical Torsion Mechanical Properties High Strength
  Springs, Helical Torsion Thermal Properties Resistance to Stress Relaxation
  Textile machinery Corrosion Resistance Corrosion Resistance
  Textile machinery Forming Characteristics Formability
  Textile machinery Friction & Wear Properties Wear Resistance
  Textile machinery Mechanical Properties High Strength
  Thrust Bearings Corrosion Resistance Corrosion Resistance
  Thrust Bearings Forming Characteristics Formability
  Thrust Bearings Friction & Wear Properties Wear Resistance
  Thrust Bearings Mechanical Properties High Strength
  Thrust Bearings Thermal Properties Resistance to Stress Relaxation
  Truss Wire Corrosion Resistance Corrosion Resistance
  Truss Wire Forming Characteristics Formability
  Truss Wire Mechanical Properties High Strength
  Truss Wire Thermal Properties Resistance to Stress Relaxation
  Welding Wire Conductivity (Electrical) Electrical Conductivity
  Welding Wire Conductivity (Thermal) Thermal Conductivity
  Welding Wire Corrosion Resistance Oxidation Resistance
  Welding Wire Softening Resistance Resistance to Thermal Softening
  Well Drill Equipment Corrosion Resistance Corrosion Resistance
  Well Drill Equipment Forming Characteristics Formability
  Well Drill Equipment Friction & Wear Properties Wear Resistance
  Well Drill Equipment Mechanical Properties High Strength
  Well Drill Equipment Thermal Properties Resistance to Stress Relaxation
Marine Marine Parts Conductivity (Thermal) Thermal Conductivity
  Marine Parts Corrosion Resistance Corrosion Resistance
  Marine Parts Corrosion Resistance Corrosion Resistance to Salt Water
  Marine Parts Forming Characteristics Formability
  Marine Parts Mechanical Properties High Strength

 

CORROSION PROPERTIES ALLOY C521
Environmental Category Specific Environment Resistance Level Corrosion notes
Alkali Aluminum Hydroxide Excellent Corrosion increases at elevated temperatures and in presence of oxidizers such as chromates or hypochlorates
  Ammonium Hydroxide Poor Reduced corrosion resistance due to soluble complex ion formation
  Barium Carbonate Excellent Corrosion increases at elevated temperatures and in presence of oxidizers such as chromates or hypochlorates
  Barium Hydroxide Excellent Corrosion increases at elevated temperatures and in presence of oxidizers such as chromates or hypochlorates
  Black Liquor, Sulfate Process Fair Corrosion rate increases at elevated temperatures or with traces of moisture
  Calcium Hydroxide Excellent Corrosion increases at elevated temperatures and in presence of oxidizers such as chromates or hypochlorates
  Lime Excellent Corrosion increases at elevated temperatures and in presence of oxidizers such as chromates or hypochlorates
  Lime-Sulfur Fair Corrosion rate increases at elevated temperatures or with traces of moisture
  Magnesium Hydroxide Excellent Corrosion increases at elevated temperatures and in presence of oxidizers such as chromates or hypochlorates
  Potassium Carbonate Excellent Corrosion increases at elevated temperatures and in presence of oxidizers such as chromates or hypochlorates
  Potassium Hydroxide Good Corrosion increases at elevated temperatures and in presence of oxidizers such as chromates or hypochlorates
  Sodium Bicarbonate Good Corrosion increases at elevated temperatures and in presence of oxidizers such as chromates or hypochlorates
  Sodium Carbonate Excellent Corrosion increases at elevated temperatures and in presence of oxidizers such as chromates or hypochlorates
  Sodium Hydroxide Good Corrosion increases at elevated temperatures and in presence of oxidizers such as chromates or hypochlorates
  Sodium Phosphate Excellent
  Sodium Silicate Excellent Corrosion increases at elevated temperatures and in presence of oxidizers such as chromates or hypochlorates
  Sodium Sulfide Fair Corrosion rate increases at elevated temperatures or with traces of moisture
Atmosphere Atmosphere, Industrial Excellent Affected by pollutants and other environmental factors. Hydrogen sulfide causes rapid tarnishing.
  Atmosphere, Marine Excellent Protective green basic copper chloride or carbonate patina.
  Atmosphere, Rural Excellent Low corrosion rates, no localized attack
Chlor. organic Carbon Tetrachloride, Dry Excellent Corrosion rate increases at elevated temperatures or with traces of moisture
  Carbon Tetracholoride, Moist Good Corrosion rate increases at elevated temperatures
  Chloroform, Dry Excellent Corrosion rate increases at elevated temperatures or with traces of moisture
  Ethyl Chloride Good Corrosion rate increases at elevated temperatures or with traces of moisture
  Methyl Chloride, Dry Excellent Corrosion rate increases at elevated temperatures or with traces of moisture
  Trichlorethylene, Dry Excellent Corrosion rate increases at elevated temperatures or with traces of moisture
  Trichlorethylene, Moist Good Corrosion rate increases at elevated temperatures
Fatty acid
Oleic Acid Excellent Corrosion rate increases at elevated temperatures or with traces of moisture
  Palmitic Acid Good Corrosion rate increases at elevated temperatures or with traces of moisture
  Stearic Acid Good Corrosion rate increases at elevated temperatures or with traces of moisture
Food/beverage Beer Excellent May affect color or taste
  Beet Sugar Syrups Excellent May affect color or taste
  Cane Sugar Syrups Excellent May affect color or taste
  Carbonated Beverages Good Acidity increases corrosion. May affect color or taste.
  Carbonated Water Good Acidity increases corrosion. May affect color or taste.
  Cider Excellent May affect color or taste
  Coffee Excellent May affect color or taste
  Corn Oil Excellent May affect color or taste
  Cottonseed Oil Excellent May affect color or taste
  Fruit Juices Good Acidity increases corrosion. May affect color or taste.
  Gelatine Excellent May affect color or taste
  Milk Excellent May affect color or taste
  Sugar Solutions Excellent May affect color or taste
  Vinegar Good Acidity increases corrosion. May affect color or taste.
Gas Ammonia, Absolutely Dry Excellent Rapid corrosion increases with traces of moisture
  Ammonia, Moist Poor More corrosion resistant in dry gas
  Carbon Dioxide, Dry Excellent Corrosion increases with trace of moisture
  Carbon Dioxide, Moist Good More corrosion resistant in dry gas
  Hydrogen Excellent Copper and copper alloys containing copper oxide susceptible to attack
  Nitrogen Excellent Resistant at cryogenic and room temperatures
  Oxygen Excellent Scaling at elevated temperatures
Halogen gas Bromine, Dry Excellent Rapid corrosion increases with traces of moisture
  Bromine, Moist Good More corrosion resistant in dry gas
  Chlorine, Dry Excellent Rapid corrosion increases with traces of moisture
  Chlorine, Moist Fair More corrosion resistant in dry gas
Hydrocarbon Acetylene Poor Forms explosive compound in presence of moisture
  Asphalt Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Benzine Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Benzol Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Butane Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Creosote Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Crude Oil Good Careful consideration must be given to specific contaminants when selecting materials for this complex environment
  Freon Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Fuel Oil Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Gasoline Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Hydrocarbons, Pure Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Kerosene Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Natural Gas Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Paraffin Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Propane Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Tar Not Recommended Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
  Turpentine Excellent Contaminants such as water, sulfides, acids and various organic compounds can increase corrosion significantly
Inorganic acid - non-oxidizing Boric Acid Excellent Increased corrosion at elevated temperatures and with oxidizers including oxygen (air), dichromates, permanganates and sulfates
  Carbolic Acid Good Increased corrosion at elevated temperatures and with oxidizers including oxygen (air), dichromates, permanganates and sulfates
  Hydrobromic Acid Fair Increased corrosion at elevated temperatures and with oxidizers including oxygen (air), dichromates, permanganates and sulfates
  Hydrochloric Acid Fair Generally limted to applications in cold, oxidizer free, dilute (<1%) or concentrated solutions
  Hydrocyanic Acid Poor Reduced corrosion resistance due to soluble complex ion formation
  Hydrofluoric Acid Fair Generally limted to applications in cold, oxidizer free, dilute (<1%) or concentrated solutions
  Hydrofluosilicic Acid Good Generally limted to applications in cold, oxidizer free, dilute (<1%) or concentrated solutions
  Phosphoric Acid Good Increased corrosion at elevated temperatures and with oxidizers including oxygen (air), dichromates, permanganates and sulfates
  Sulfuric Acid Good Not suitable for hot concentrated solutions
Inorganic acid - oxidizing Chromic Acid Poor Severe oxidizing environment.
  Nitric Acid Poor Severe oxidizing environment.
  Sulfurous Acid Good Increased corrosion at elevated temperatures and with oxidizers including oxygen (air), dichromates, permanganates and sulfates
Liquid metal Mercury Poor Severe liquid metal embrittlement
Miscellaneous Glue Excellent Low corrosion rates, no localized attack
  Linseed Oil Good Low corrosion rates, no localized attack
  Rosin Excellent Low corrosion rates, no localized attack
  Sewage Excellent Corrosion affected by salt concentration, temperature, velocity, dissolved oxygen content and pollutants.
  Soap Solutions Excellent Corrosion affected by salt concentration, temperature, velocity, dissolved oxygen content and pollutants.
  Varnish Excellent Low corrosion rates, no localized attack
Neutral/acid salt Alum Good
  Alumina Excellent Low corrosion rates, no localized attack
  Aluminum Chloride Good Strong agitation and aeration increases corrosion
  Aluminum Sulfate Good Suitable for neutral or alkaline conditions
  Ammonium Chloride Poor Reduced corrosion resistance due to soluble complex ion formation
  Ammonium Sulfate Fair Reduced corrosion resistance due to soluble complex ion formation
  Barium Chloride Good Strong agitation and aeration increases corrosion
  Barium Sulfate Excellent Low corrosion rates, no localized attack
  Barium Sulfide Fair High zinc content alloys preferred
  Calcium Chloride Excellent Hydrolylsis produces weak acidic condition
  Carbon Disulfide Good High zinc content alloys preferred
  Magnesium Chloride Good Hydrolylsis produces weak acidic condition
  Magnesium Sulfate Excellent Low corrosion rates, no localized attack
  Potassium Chloride Excellent Hydrolylsis produces weak acidic condition
  Potassium Cyanide Poor Reduced corrosion resistance due to soluble complex ion formation
  Potassium Dichromate Acid Poor Highly oxidizing under acidic conditions
  Potassium Sulfate Excellent Low corrosion rates, no localized attack
  Sodium Bisulfate Good Suitable for neutral or alkaline conditions
  Sodium Chloride Excellent Hydrolylsis produces weak acidic condition
  Sodium Cyanide Poor Low corrosion rates, no localized attack
  Sodium Dichromate, Acid Poor Highly oxidizing under acidic conditions
  Sodium Sulfate Excellent Low corrosion rates, no localized attack
  Sodium Sulfite Good Suitable for neutral or alkaline conditions
  Sodium Thiosulfate Fair High zinc content alloys preferred
  Zinc Chloride Fair Hydrolylsis produces weak acidic condition
  Zinc Sulfate Good Suitable for neutral or alkaline conditions
Organic solvent Acetone Excellent Resistant up to 200F unless contaminated by water, acids, alkalies or salts
  Alcohols Excellent Resistant up to 200F unless contaminated by water, acids, alkalies or salts
  Amyl Acetate Excellent
  Amyl Alcohol Excellent
  Butyl Alcohol Excellent Resistant up to 200F unless contaminated by water, acids, alkalies or salts
  Ethers Excellent Resistant up to 200F unless contaminated by water, acids, alkalies or salts
  Ethyl Acetate Excellent
  Ethyl Alcohol Excellent Resistant up to 200F unless contaminated by water, acids, alkalies or salts
  Lacquer Solvents Excellent Resistant up to 200F unless contaminated by water, acids, alkalies or salts
  Methyl Alcohol Excellent
  Toluene Excellent Resistant up to 200F unless contaminated by water, acids, alkalies or salts
Organic acid Acetic Acid Good Useful corrosion resistance in absence of oxidizers such as oxygen (air), oxidizing salts and >5% chlorides. Optimum resistance at room temperature and above boiling point.
  Acetic Anhydride Good Useful corrosion resistance in absence of oxidizers such as oxygen (air), oxidizing salts and >5% chlorides. Optimum resistance at room temperature and above boiling point.
  Benzoic Acid Excellent Useful corrosion resistance in absence of oxidizers such as oxygen (air), oxidizing salts and >5% chlorides. Optimum resistance at room temperature and above boiling point.
  Butyric Acid Excellent Useful corrosion resistance in absence of oxidizers such as oxygen (air), oxidizing salts and >5% chlorides. Optimum resistance at room temperature and above boiling point.
  Chloracetic Acid Good Useful corrosion resistance in absence of oxidizers such as oxygen (air), oxidizing salts and >5% chlorides. Optimum resistance at room temperature and above boiling point.
  Citric Acid Excellent Useful corrosion resistance in absence of oxidizers such as oxygen (air), oxidizing salts and >5% chlorides. Optimum resistance at room temperature and above boiling point.
  Formic Acid Excellent Useful corrosion resistance in absence of oxidizers such as oxygen (air), oxidizing salts and >5% chlorides. Optimum resistance at room temperature and above boiling point.
  Lactic Acid Excellent Useful corrosion resistance in absence of oxidizers such as oxygen (air), oxidizing salts and >5% chlorides. Optimum resistance at room temperature and above boiling point.
  Oxalic Acid Excellent Useful corrosion resistance in absence of oxidizers such as oxygen (air), oxidizing salts and >5% chlorides. Optimum resistance at room temperature and above boiling point.
  Tannic Acid Excellent Useful corrosion resistance in absence of oxidizers such as oxygen (air), oxidizing salts and >5% chlorides. Optimum resistance at room temperature and above boiling point.
  Tartaric Acid Excellent Useful corrosion resistance in absence of oxidizers such as oxygen (air), oxidizing salts and >5% chlorides. Optimum resistance at room temperature and above boiling point.
  Trichloracetic Acid Good Useful corrosion resistance in absence of oxidizers such as oxygen (air), oxidizing salts and >5% chlorides. Optimum resistance at room temperature and above boiling point.
Organic compound Aniline Fair Corrosion rate increases at elevated temperatures or with traces of moisture
  Aniline Dyes Fair Corrosion rate increases at elevated temperatures or with traces of moisture
  Castor Oil Excellent Low corrosion rates, no localized attack
  Ethylene Glycol Excellent Low corrosion rates, no localized attack
  Formaldehyde Excellent Low corrosion rates, no localized attack
  Furfural Excellent Low corrosion rates, no localized attack
  Glucose Excellent Low corrosion rates, no localized attack
  Glycerine Excellent Low corrosion rates, no localized attack
  Lacquers Excellent Low corrosion rates, no localized attack
Oxidizing salt Ammonium Nitrate Poor Reduced corrosion resistance due to soluble complex ion formation
  Bleaching Powder, Wet Good Useful corrosion resistance with moderate oxidizers levels and <5% chlorides. Optimum resistance at room temperature and above boiling point.
  Borax Excellent Low corrosion rates, no localized attack
  Bordeaux Mixture Excellent Low corrosion rates, no localized attack
  Calcium Bisulfite Good Useful corrosion resistance with moderate oxidizers levels and <5% chlorides. Optimum resistance at room temperature and above boiling point.
  Calcium Hypochlorite Good Useful corrosion resistance with moderate oxidizers levels and <5% chlorides. Optimum resistance at room temperature and above boiling point.
  Copper Chloride Fair Severe oxidizing environment.
  Copper Nitrate Fair Oxidizing environment
  Copper Sulfate Good Hydrolylsis produces weak acidic condition
  Ferric Chloride Poor Severe oxidizing environment.
  Ferric Sulfate Poor Severe oxidizing environment.
  Ferrous Chloride Good Strong agitation and aeration increases corrosion
  Ferrous Sulfate Good Hydrolylsis produces weak acidic condition
  Hydrogen Peroxide Good Oxidizing environment
  Mercury Salts Poor Noble metal salt, plates on copper surface
  Potassium Chromate Excellent Suitable for neutral or alkaline conditions
  Silver Salts Poor Noble metal salt, plates on copper surface
  Sodium Bisulfite Good Useful corrosion resistance with moderate oxidizers levels and <5% chlorides. Optimum resistance at room temperature and above boiling point.
  Sodium Chromate Excellent Suitable for neutral or alkaline conditions
  Sodium Hypochlorite Fair Useful corrosion resistance with moderate oxidizers levels and <5% chlorides. Optimum resistance at room temperature and above boiling point.
  Sodium Nitrate Good Useful corrosion resistance with moderate oxidizers levels and <5% chlorides. Optimum resistance at room temperature and above boiling point.
  Sodium Peroxide Fair Oxidizing environment
Sulfur compound Hydrogen Sulfide, Dry Excellent Rapid corrosion increases with traces of moisture
  Hydrogen Sulfide, Moist Poor High zinc content alloys preferred
  Sulfur Chloride, Dry Excellent Rapid corrosion increases with traces of moisture
  Sulfur Dioxide, Dry Excellent Scaling at elevated temperatures
  Sulfur Dioxide, Moist Good Mixed oxide and sulfide scale forms
  Sulfur Trioxide, Dry Excellent Corrosion increases with trace of moisture
  Sulfur, Dry Good High zinc content alloys preferred
  Sulfur, Molten Poor Forms non-protective copper sulfide
Water Brines Excellent Increased corrosion with oxidizers, e.g. oxygen (air), chlorine, hypochlorites and ferric ions. Refer to specific salt solution ratings.
  Mine Water Fair Acidic waters containing oxidizers are highly corrosive.
  Sea Water Excellent Corrosion affected by salt concentration, temperature, dissolved oxygen content and pollutants. Erosion-corrosion at moderate velocities.
  Steam Excellent Resistant to pure steam. Carbon dixide, dissolved oxygen or ammonia can increase corrosion.
  Water, Potable Excellent Corrosion affected by water chemistry (mineral content, acidity) system design and fabrication. Free carbon dioxide can cause pitting in cold water. Pitting in hot water caused by cathodic deposits. Erosion-corrosion at high velocities.

 

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  • Address:
    Aufhauser Corporation
    39 West Mall, Plainview, NY 11803 USA

  • Phone: +1-212-246-0205

  • Email: sales @ brazing.com