ASTM B197 Grade C17200 TM08 – Superior Strength & Conductivity Copper Alloy

Materion Performance Alloys’ Alloy 25 wire provides the highest strength of any copper alloy, with electrical conductivity considerably greater than other high strength copper alloys. This alloy features good stress relaxation resistance and high fatigue strength.

Properties

General

Property	Temperature	Value
Density	23.0 °C	8.36 - 8.8 g/cm³

Dimension

Property	Value
Diameter	1.27 - 12.7 mm

Mechanical

Property	Temperature	Value
Elastic modulus	23.0 °C	130 - 131 GPa
Elongation	23.0 °C	2 - 15 %
Tensile strength	23.0 °C	750 - 1260 MPa
Yield strength	23.0 °C	1140 MPa
Yield strength Rp0.2	23.0 °C	620 - 870 MPa

Thermal

Property	Temperature	Value
Coefficient of thermal expansion	23.0 °C	1.75E-5 - 1.8E-5 1/K
Melting point		870 °C
Specific heat capacity	23.0 °C	360 J/(kg·K)
Thermal conductivity	23.0 °C	105 - 110 W/(m·K)

Electrical

Property	Temperature	Value
Electrical resistivity	23.0 °C	6.2E-6 - 7.8E-6 Ω·m
Specific Electrical conductivity		22 - 28 % IACS

Chemical properties

Property	Value	Comment
Aluminium	0 - 0.2 %
Beryllium	1.8 - 2 %
Cobalt	0.2 %	min. Nickel + Cobalt
Copper	96.1 - 98 %	Balance
Iron	0 - 0.6 %	max., Nickel + Cobalt + Iron
Nickel	0.2 - 0.6 %	min. Nickel + Cobalt
Other	0 - 0.5 %
Silicon	0 - 0.2 %

Technological properties

Property
Application areas	Typical applications include precision coil springs and pins for burn-in and test socket contacts and probe pins, computer processor socket contacts, cold headed fasteners, modular jack contacts, woven mesh electromagnetic shielding gaskets and resilient eyeglass frames.

High-Strength Copper Alloy C17200 (ASTM B197) – Superior Performance & Conductivity BS 4360 Grade 43A Hot Rolled Steel – Low‑Carbon, Cost‑Effective Solution

Metal