Engineered metals
for precision industries

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ARCAP AP4
CuNi44Mn

Chemical composition

CuBAL

Ni43-45

Zn0.2 max

Pb0.01 max

Sn0.01 max

Fe0.5 max

Mn0.5-2

S0.02 max

Co0.5 max

C0.05 max

Other1.5 max

*Unified Numbering System (USA)

Alliage de cuivre totalement amagnétique avec une excellente résistance à la corrosion dans divers environnements, y compris l'eau de mer.

Physical properties		Units
Density (20°C)	8,90	Kg/dm³
Melting point	1290	°C
Longitudinal elasticity modulus	145	GPa
Thermal conductivity		W/m·K
Electrical conductivity	>25	m/Ω·mm²
Electrical resistivity	<0.49	µΩ·m
Linear expansion Coefficient	17	10⁻⁶·K⁻¹
IACS (International Annealed Copper Standard)	>3.5	%
Poisson's ratio

1 poor | 2 average | 3 good | 4 very good | - no info

Heat Treatment / Hardening
Annealing temperature	550-750	°C
Temperature for stress relief treatment	300	°C
Hardening temperature		°C
Hardening treatment time		hour(s)

ARCAP AP4
Possible hardness range	100 - 235	HV
Possible Rm range	460 - 750	MPa

Grade	Condition	Hardness (HV: Vickers) min - max	Rm (MPa) min - max	Rp 0.2 (MPa) min - max	Elongation (%) where L0 = 100mm min - max	L0
mou	RLSA	≤ 140	≤ 520	≤ 300	≥ 30	50
ROB01	RLSA	140 - 180	500 - 600	≥ 300	≥ 15	50
ROB03	RLSA	175 - 205	550 - 650	≥ 450	≥ 8	50
ROB08	RLSA	≤ 225	≤ 720	≤ 670

Do not hesitate to ask us for your specific grades and parameters. We can make productions according to your needs.