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Copper Alloy No. C70600

Copper Nickel 90/10

Chemical Composition % by weight

Element Nominal Minimum Maximum
Copper 88.6 Rem. Rem.
Lead - - .05
Iron 1.4 1 1.8
Zinc - - 1*
Nickel 10 9 11
Manganese .60 .30 .80

*When the product is subsequent welding applications and so specified by the purchaser, Zn shall be .50% max., Pb .025% max., P .02% max., Sulfur .02% max. and Carbon .05% max.

Applications

Condensers, condenser plates, distiller tubes, evaporator and heat exchanger tubes, salt water piping, ferrules. 

Common Fabrication Processes

Forming and bending, welding.

Mechanical Properties

Typical for 1" OD Light Drawn Tube x .065" wall thickness

Hardness* Rockwell B Scales 72
Tensile Strength** KSI 60
Yield Strength** (.5% EAU) KSI 57
Elongation** % in 2 inch 10

**Test values are nominal approximations and depend on specimen size and orientation.

Physical Properties

Thermal Conductivity BTU/ (sq ft-ft-hr-F) 26
Specific Heat BTU/lb/F @ 68F .09
Thermal Expansion Per F from 68 F to 572 F .0000095
Density lb/cu in @ 68 F .323
Electrical Conductivity* (Annealed) % IACS @ 68 F 9
Modulus of Elasticity (Tension) KSI 18,000

*Volume basis

Fabrication Properties

Capacity for being cold worked Good
Capacity for being hot formed Good
Suitability for being joined by: Soldering/Excellent
Brazing/Excellent
Oxyacetylene Welding/Fair
Gas Shielded Arc Welding/Excellent
Coated Metal Arc Welding/Good
Resistance Welding Spot/Good
Seam/Good
Butt/Excellent

The values listed above represent reasonable approximations suitable for general engineering use. Due to commercial variations in composition and to manufacturing limitations, they should not be used for specification purposes. See applicable A.S.T.M. specification references.