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Alloy M25 (UNS C17300) offers the strength properties of Alloy 25 with the added benefit of being "free machining." Alloy M25 rod and wire contain a small amount of lead to provide an alloy tailored for automatic machining operations. Lead promotes formation of finely divided chips, thus extending cutting tool life.

12' Random Lengths
Condition H (Hardened)
Specifications:

CDA 173 ASTM B196
UNS C17300
Nominal Composition:
Copper: 97.7% Beryllium: 1.9% Lead: 0.4%
Also available in condition A (annealed).
Unit of Measure

Specifications

Material

Beryllium Copper

Shapeform

Round Rod

Condition

A (Annealed) H (Hardened)

Type

Alloy M25

Diameter

1/8 inches

Diameter

0.125 inches3.175 mm

Weight

0.0439 lbs/ft0.06533198 kg/m

Weight per 12' Length

0.527 lbs0.2389945 kg

Nominal Composition

0.20% Min. Cobalt + Nickel 0.4% Lead 0.6% Max. Cobalt + Nickel + Iron 1.9% Beryllium 97.7% Copper

ASTM Specification

ASTM B196 CDA 173 UNS 17300

Random Lengths

12 ft

Typical Physical Properties

Density

0.302 lbs/in³

Elastic Modulus

19 x 106 psi

Coefficient of Thermal Expansion (70ºF to 400ºF)

9.7 x 104 in/in/ºF

Thermal Conductivity

60 Btu/(ft.hr.ºF)

Melting Temperature Range

1600 to 1800 ºF