CW617N
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| UNS | C37700 |
| EN | CuZn40Pb2 (CW617N) |
| JIS | / |
| GB | T38210 (HPb58-2) |
Chemical Composition
| Cu | 57.0–59.0% |
| Pb | 1.6–2.5% |
| Fe | ≤0.3% |
| Sn | ≤0.3% |
| Ni | ≤0.3% |
| Al | ≤0.05% |
| Zn | Balance% |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density(g/cm³) | 8.4 |
|---|---|
| Melting Point(℃) | 893.3 |
| Electrical conductivity(%IACS) | 22 |
| Thermal conductivity(W/(m·K)) | 119.5 |
| Coefficient of thermal expansion²(10⁻⁶/K) | 20.1 |
| Modulus of elasticity(GPa) | 103.4 |
Fabrication Properties
Note③：C36000 = 100%
| Machinability rating ③ | 90% |
| Polishing | Fair |
| Hot forging | Good |
| Clamping | Fair |
| Thread rolling | Poor |
| Tapping | Good |
Mechanical Properties ④
Note④: bedra technical standardGB/T 4423, ASTM B455/B455M, DIN EN 12164, or JIS H 3250, etc., can also be applied
| Temper | Diameter(mm) | Tensile Strength(MPa min.) | Yield strength(MPa min.) | Elongation(A% min.) |
|---|---|---|---|---|
| H04 | 1.5 ≤ Φ 3.0 | 560 | 470 | 2 |
| H04 | 3.0 ≤ Φ 8.0 | 520 | 440 | 7 |
| H04 | 8.0 ≤ Φ 15 | 460 | 380 | 8 |
| H04 | 15 ≤ Φ 35 | 420 | 340 | 12 |
| H04 | 35 ≤ Φ 60 | 400 | 320 | 14 |
| H02 | 1.5 ≤ Φ 3.0 | 480 | 400 | 5 |
| H02 | 3.0 ≤ Φ 8.0 | 460 | 380 | 8 |
| H02 | 8.0 ≤ Φ 15 | 420 | 340 | 12 |
| H02 | 15 ≤ Φ 35 | 400 | 320 | 15 |
| H02 | 35 ≤ Φ 60 | 380 | 300 | 20 |
| M30 | - | 330 | 240 | 18 |
| O60 | - | 300 | 200 | 30 |
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