Alloy 25 Forging & Extrusion – Highest Strength Copper Alloy (TF00 C17200)

Alloy 25 from Materion Performance Alloys provides the highest strength of any copper alloy, with electrical and thermal conductivity considerably greater than other high strength copper alloys. The alloy features high fatigue strength and resistance to wear, corrosion, galling, and stress relaxation.

Properties

General

Property	Temperature	Value
Density	23.0 °C	8.36 g/cm³

Mechanical

Property	Temperature	Value
Elastic modulus	23.0 °C	131 GPa
Elongation	23.0 °C	3 - 10 %
Hardness, Rockwell C	23.0 °C	36 - 42 [-]
Tensile strength	23.0 °C	1140 - 1380 MPa
Yield strength Rp0.2	23.0 °C	890 - 1210 MPa

Thermal

Property	Temperature	Value
Coefficient of thermal expansion	23.0 °C	1.75E-5 1/K
Melting point		870 °C
Thermal conductivity	23.0 °C	105 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
Beryllium	1.8 - 2 %
Cobalt	0.2 %	min. Nickel + Cobalt
Copper	Balance
Iron	0.6 %	max., Nickel + Cobalt + Iron
Nickel	0.2 %	min. Nickel + Cobalt

Technological properties

Property
Application areas	Typical applications for parts finished by forging or extrusion of these alloys include undersea instrument and repeater housings, generator rings, and resistance welding components.

Alloy 25: High-Strength Copper Alloy for Forging & Extrusion – TB00 (C17200) Alloy 165 – Premium High‑Strength Material for Forging & Extrusion (C17000)

Metal