CMA1 Copper-Manganese-Aluminium

BS1400:1985

Composition (maximum % unless otherwise listed)

Cu Remainder
Sn 0.50
Zn 1.0
Pb* 0.05
P* 0.05
Ni 1.5 - 4.5
Fe 2.0 - 4.0
Al 7.0 - 8.5
Mn 11.0 - 15.0
Si* 0.15
T-I 0.30

T-I   Total Impurities

Elements marked with * are specified impurities

Typical Physical Properties

Tensile Strength (MPa) 650-730
Elongation (% min) 18-35
0.2% Proof Stress (MPa) 280-340
Hardness (HB) 160-210

Related Specifications

AS 1565:1985 C95710
AS 1565:1974 957B
ASTM 957

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