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- material properties
- Lead-free BZ5 material properties
| Product code (Hirosugi-Keiki) |
Material code (San-Etsu Metals) |
Cu | Bi | Fe | Sn | Pb | Cd | Zn |
|---|---|---|---|---|---|---|---|---|
| ASE,BSE ARE,BRE,CE |
BZ5A | 59.0-60.0 | 2.0-2.4 | ≦0.35 | 0.2-0.3 | ≦0.01 | ≦0.001 | Remaining part |
BZ5A can be made as hexagonal material so material has been standardized to BZ5A with good machinability.
| Manufacturing process | Tensile strength (N/mm2) |
0.2％ yield strength (N/mm2) |
Elongation (％) |
Hardness (Hv) |
|
|---|---|---|---|---|---|
| BZ5A(1/2H)φ8 | Hard drawn | 480 | 310 | 25 | 150 |
| BZ5 | ・Melting point | ：890℃ |
| ・Density | ：8.41 /cm3(at20℃) |
|
| ・Linear expansion coeffi cient | ：19.6×10-6(20℃-300℃) | |
| ・Vertical modulus of elasticity | ：101kN/mm2 | |
| ・Conductivity | ：24％(IACS)(at20℃) | |
BZ5 characteristics (made by San-Etsu Metals Co., Ltd.) |
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| (１)New lead-free and cadmium-free brass material |
＜Lead component: 0.01 or less＞ ＜Cadmium: 0.001 or less＞ |
|
| (２)BZ adds bismuth in place of lead | ||
| ＜Bismuth (Bi)＞ | (a) Metal with atomic number 83 (b) Mainly produced mixed with lead (c) Has been added to steel since ancient times (d) Has been recognized as a digestive medicine ingredient in the U.S., and presents no issues with regard to safety |
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