Products
Copper Alloys
Perfect for suitors seeking exceptional heat conductivity and superior surface finish, our copper alloys are the leading choice for the electrical industry and related.
Get in touch today to learn how PIAD can provide you with the industry's best copper-based permanent mold casting solutions.
Navigate Our Copper Alloy Guide
Follow the below links to learn more about what our copper alloys have to offer.
PIAD Alloy Reference Chart
Mechanical & Physical Properties · Permanent Mold Sand Casting Alloys
| Alloy No. | Composition | Yield Str. (ksi) |
Tensile Str. (ksi) |
Elongation in 2" (%) |
Brinell Hardness |
Modulus (psi ×10⁶) |
Elec. Cond. (% IACS) |
CDA / Equiv. Standards |
Notes & Applications |
|---|---|---|---|---|---|---|---|---|---|
| Group C — High Conductivity Copper 5 alloys | |||||||||
| C 010 | Cu | 3–5 | 25–28 | 48–44 | 33–38 | 17.7 | 85 min | C81200 | Pure electrolytic copper with deoxidizer additions; excellent electrical & thermal conductivity. Suitable for heat exchangers, switchgear, transformers. Can be processed in hydrogen atmosphere. |
| C 011 | Cu | 3–5 | 27–30 | 35–30 | 35–44 | 17.7 | 98 min | C80100 | Pure electrolytic copper with traces of oxygen; superior electrical & thermal conductivity. Suited for contacts, contact carriers, arc shields. Cannot be processed in hydrogen atmosphere at elevated temps. |
| C 021 | Cu-Cr | 39–44 | 54–59 | 25–20 | 110–130 | 17.5 | 70 min | C81400/81500 | Age-hardened chromium-copper; excellent combination of strength, hardness & electrical conductivity. Very well suited for electrical contacts. |
| C 030 | Cu-Ni-Si | 51–56 | 63–66 | 15–8 | 142–161* | 17.5 | 39–43 | C81540 | Age-hardened; good thermal & electrical conductivity. Suited for wire/cable clamps in industrial atmospheres; resistant to stress corrosion. |
| C 031 | Cu-Ni-Si | 75–79 | 78–83 | 4–3 | 190–204* | 17.3 | 27–34 | No equivalent | Higher mechanical strength & lower electrical properties vs. C030. Best suited for electrode holders (resistance welding). Resistant to stress corrosion. |
Copper Alloys: Featured Information
High conductivity copper chill castings
PIAD chill castings are produced from pure electrolytic copper and provide a minimum of 98% lACS electrical conductivity. This is accomplished by using a metallurgically controlled melting process without the use of fluxes or deoxidation agents. This is a significant difference between PIAD chill castings and sand castings. The copper used for sand castings needs to go through a deoxidation process which results in a reduction in electrical conductivity since impurities remain in the material.
Copper alloys and electricity
The combination of pure electrolytic copper and the PIAD chill casting process provide excellent solutions for design engineers in the electrical industry. PIAD chill castings have replaced many brazed copper assemblies in switches and power breakers, saving labor costs and improving performance.
What customers can expect
Choosing PIAD copper-based castings means choosing exceptionally high heat/electric conductive parts with reduced impurities.
Browse Our Work
These images display just a small portion of our work with copper-based alloys. Ranging from circuit breaker blade supports to switching device contact arms, these parts display our capabilities in the copper-based permanent mold industry.
Get in touch today
Talk with our professionals to learn how PIAD can provide you with copper alloy permanent mold casting solutions.