Engineered metals
for precision industries

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STOL 80
CuSn0.15

Chemical composition

CuBAL

Sn0.1-0.2

*Unified Numbering System (USA)

STOL® 80 est un alliage spécial à faible teneur en étain (Sn) qui combine un faible coût et la plus grande conductivité.

Physical properties		Units
Density (20°C)	8,93	Kg/dm³
Melting point	1083	°C
Longitudinal elasticity modulus	130	GPa
Thermal conductivity		W/m·K
Electrical conductivity	>49	m/Ω·mm²
Electrical resistivity	<0.024	µΩ·m
Linear expansion Coefficient	18	10⁻⁶·K⁻¹
IACS (International Annealed Copper Standard)	>85	%
Poisson's ratio	0,34

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

Heat Treatment / Hardening
Annealing temperature	370	°C
Temperature for stress relief treatment	150-200	°C
Hardening temperature		°C
Hardening treatment time		hour(s)

STOL 80
Possible hardness range	65 - 125	HV
Possible Rm range	250 - 450	MPa

Grade	Hardness (HV: Vickers) min - max	Rm (MPa) min - max	Rp 0.2 (MPa) min - max	Elongation (%) where L0 = 100mm min - max	L0
R250	60 - 85*	≥ 250	≥ 140	≥ 20	50
R300	80 - 100*	300 - 370	≥ 270	≥ 10	50
R360	110 - 130*	360 - 430	≥ 310	≥ 7	50
R420	120 - 150*	420 - 490	≥ 370	≥ 5	50
R460	≥ 135*	≥ 460	≥ 410	≥ 4	50

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