C172

Copper 172 – Beryllium Copper Round Bar

C17200

Overview

Copper 172 (C17200) is a high-strength beryllium copper alloy achieving tensile strengths exceeding 200 ksi with non-sparking properties.

Chemical Composition

Element	Min	Max
Copper (Cu)	Remainder (~96.6%)	—
Beryllium (Be)	1.80%	2.00%
Cobalt (Co)	0.20%	—

Alloy Designations

UNSC17200

Common NameBeryllium Copper / Alloy 25

AMS4533

Mechanical Properties

Tensile Strength (Age Hardened)195–200 ksi (1,344–1,379 MPa)

Yield Strength (Age Hardened)175–180 ksi (1,207–1,241 MPa)

Elongation (Age Hardened)2–3%

Rockwell Hardness (Age Hardened)C 41–42

Physical Properties

Density8.26 g/cm³

Electrical Conductivity22% IACS

Thermal Conductivity107 W/m·K

Modulus of Elasticity128 GPa (18,500 ksi)

Typical Applications

Aerospace bushings and bearings
Oil & gas drilling components
Springs and spring-loaded contacts
Non-sparking tools
Plastic injection mold components

Fabrication & Joining

Solution anneal: 1,450°F (790°C), water quench
Age hardening: 600°F (315°C) for 2–3 hours
Soldering: Good
Brazing: Good

Need C172 Copper Round Bar?

Contact our sales engineers for a custom quote on C172 (C17200) copper round bar — tailored dimensions, tempers, and finishing options for your exact specifications.

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