C70600 (90/10) Copper Nickel This hot-worked copper-nickel alloy is composed of 70% copper and 30% nickel and has moderate electrical conductivity. 90/10 copper-nickel alloy is a copper-nickel alloy with good stress corrosion resistance.
90-10 copper-nickel alloy has good hot and cold working properties and is easy to weld. Typical 90/10 applications in the chemical and marine industries include tubes and tube sheets for condensers, evaporators and heat exchangers. 90/10 copper-nickel is inherently antimicrobial and is a good choice for touch surface applications.
chemical composition
Copper Cu: balance
Nickel + cobalt NiCo: 29.0～32.0
Tin Sn: ≤0.03
Zinc Zn: ≤0.3
Lead Pb: ≤0.02
Phosphorus P: ≤0.006
Iron Fe: 0.5～1.0
Manganese Mn: 0.5～1.2
Silicon Si: ≤0.15
Sulfur S: ≤0.01
Carbon C: ≤0.05
Note: ≤0.7 (impurity)
Features:
high strength
Excellent corrosion resistance
Moderate machinability
high impact resistance
Standards: ASTM-B-151, ASTM-B-122, ASTM-B-11, MIL-C-15726
UNS C70600 copper-nickel alloy is used primarily in seawater service as forged and machined valve and pump components, fittings and hardware. This alloy is also used in applications requiring high corrosion resistance, and chloride stress corrosion cracking prevention