Copper Alloys Properties - Alloy Selection Guide
Notes & Comments

Copper Alloys Physical PropertiesClick To Download Alloys Selection PDF
Alloy Selection Guide Alloy No.
Notes and Comments
Alloy Group
High Conductivity Copper
C 010 Pure electrolytic copper with small additions of deoxydizers to bind oxygen; excellent electrical and thermal conductivity for application in heat exchangers and electrical switchgear and transformers. Material can be processed in hydrogen atmosphere.
C 011 Pure electrolytic copper with traces of oxygen. Superior electrical and thermal conductivity. Especially suited for application in the electrical industry for parts such as contacts, contact carriers, arc shields. Material cannot be processed in hydrogen atmospheres; welding must be done under an inert gas shield.
C 021 Age-hardened chromium-copper alloy with an excellent combination of strength, hardness, and electrical conductivity. Should be used when hardness and strength are required besides good electrical conductivity; very well suited for electrical contacts.
C 030 Age-hardened copper alloy with good thermal and electrical conductivity; especially suited for wire or cable clamps which are used in outside industrial atmosphere; resistant to stress corrosion.
C 031 Age-hardened copper alloy with same characteristics as C030 but higher mechanical strength and lower electrical properties. Used where good electrical and thermal conductivity is required under high mechanical loads; resistant to stress corrosion. Especially suited for electrode holders in resistance welding equipment.
Alloy Groups
M & S
Brass and Special Brass
M 010 High-quality brass of excellent castability; suitable for complicated thin-wall parts in the electrical, machinery, hardware and equipment industries; resistant to stress corrosion and atmosphere corrosion, excellent plateability. Examples: brush holders, arc horns, meter housings, lock hardware, instrument housings.
M 030 High-quality brass with good machinability; recommended for parts which require additional machining; not suitable for complicated parts.
S 010 High-quality special brass with good mechanical properties; for parts which require increased yield and tensile strength with applications for electrical switchgear components, high-pressure instrument housings, marine hardware; resistant to corrosion in industrial atmospheres.
S 012 Special brass with high electrical and thermal conductivity; developed for use in electrical equipment: contact carriers, terminal connectors, contacts, etc.; cannot be tin plated; material is not resistant to stress corrosion.
S 0121 Special brass with good electrical and thermal conductivity; for application in electrical equipment; can be tin plated and soldered.
S 020 Special brass with very good bearing qualities, can be used as a substitute for leaded tin bronzes. Application examples: bearings, bushings, clutch rings.
S 030 High-strength yellow brass for components which are subjected to high static pressure and high stresses. Application examples: bearings for motors, parts for high pressure valves, control panels.
S 031 High-strength yellow brass for applications similar to S030 but better suited for applications where vibration is involved. Application examples: clamping pieces, levers, braces.
S 034 High-strength yellow brass with properties similar to S031 but with improved corrosion resistance especially in marine atmosphere.
S 070 High-strength "nickel-silver" alloy; has excellent corrosion resistance in many atmospheres; approved for parts used in food industry. Has silver white color and is suitable for decorative parts without plating.
S 051 Special brass with high copper content; good corrosion resistance, not susceptible to stress corrosion, excellent solderability and brazability.
Alloy Group
Aluminum Bronze
A 010 Good corrosion resistance to many chemical agents; excellent for cryogenic applications; shows not embrittlement down to temperatures of -200°C; suitable for application in chemical industry; nonmagnetic.
A 011 Good corrosion resistance to many chemical agents, especially H2SO4 and H3PO4; good corrosion resistance in cold salt water and in salt water atmosphere; weldable; suitable for nonmagnetic applications.
A 012 Good corrosion resistance in salt water and other water application; weldable and be heat treated; non-sparking. Used for components in the valve and pump industry.
A 020 High-strength nickel-aluminum bronze with excellent corrosion resistance in atmosphere, water solution, hot and cold salt water, and many chemical agents. Performs well where cavitation and erosion are factors. Can be welded with common material and with carbon steel. Can be heat treated and is suitable for applications where non-sparking is required.
A 021 Properties similar to A020 with reduced mechanical properties but increased ductility. Should be applied where strength and corrosion resistance is required. Weldable and can be heat treated.
A 022 Excellent corrosion resistance, similar to A011 but with improved mechanical properties. Can be welded and heat treated.
A 023 High-strength nickel-aluminum bronze with excellent wear properties under high loads; used for wear parts, chuck drivers, and heavy loaded spindle nuts. Can be welded and heat treated.
A 0201 High-strength nickel-aluminum bronze for high mechanical loads, similar to A020 but with increased mechanical properties.
A 0202 High-strength nickel-aluminum bronze with properties similar to A020. Especially developed for shift forks in transmissions for heavy trucks and agricultural equipment.
A 030 Special aluminum-nickel-manganese bronze with good corrosion resistance and very low permeability; especially suited for applications in instruments where low magnetic properties are required.
Alloy Group
 Tin Bronzes
B 010 Excellent corrosion resistance to many chemical agents; well suited for chemical and processing industries - housings, flanges, glands; castability of all tin bronzes in permanent mold is inferior to aluminum bronzes and brasses.
B 011 Nickel-tin gear bronze; especially suited for worm gears in speed reducers.
B 012 Leaded nickel-tin gear bronze; especially suited for worm gears in speed reducers.
B 030 Special aluminum-tin bronze for wear applications where non-sparking is a requirement.

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