Les laitons de fonderie SP
11 January 2010
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Dénomination norme |
Laitons de fonderie sous pression Composition chimique |
Caractéristiques mécaniques 1 N/mm² = 1MPa |
Traitements de surface |
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|
Cu |
Zn |
Al |
Fe |
Mn |
Ni |
Pb |
Si |
Sn |
P |
Sb |
Rm
N/mm² |
Rp 0.2
N/mm² |
A%
mm |
HB |
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CB754S – CuZn39Pb1Al-B |
Mini |
58 |
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0.1 |
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0.5 |
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|
350 |
250 |
4 |
110 |
Polissage – Chromage -Nickelage – Etamage - Peinture |
|
EN 1982 |
Maxi |
62 |
|
0.8 |
0.7 |
0.5 |
|
2.4 |
0.05 |
1 |
0.02 |
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Mini |
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CuZn34SiPb |
Maxi |
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CB751S – CuZn33Pb2Si-B |
Mini |
63.5 |
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0.25 |
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0.8 |
0.7 |
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|
400 |
280 |
5 |
110 |
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EN 1982 |
Maxi |
65.5 |
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0.1 |
0.5 |
0.1 |
0.8 |
2 |
1 |
0.8 |
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0.05 |
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CB761S – CuZn16Si4-B |
Mini |
78.5 |
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3 |
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530 |
370 |
5 |
150 |
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EN 1982 |
Maxi |
82 |
|
0.1 |
0.5 |
0.2 |
1 |
0.6 |
5 |
0.25 |
0.02 |
0.05 |
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