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Specifications、Specifications for Steel Dies
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Parameters
| Specifications、Specifications for steel dies | ||||||||||
|
Grade |
Co | WC |
Hardness |
Densit |
Flexural Strength |
Bending Toughness |
Elastic Modulus |
Coefficient of Thermal Expansion |
Application |
|
| Co% |
Grain Size of |
HRA | HV30 | g/cm³ | MPa | J/cm2 | GPa | 10-6/℃ | ||
| MD51B | 19 | Medium | 85 | 950 | 13.5 | 3100 | 7.2 | 400 | 6.7 |
Suitable for mould of shrinkage rod with large reduction in diameter |
| MD50A | 20 | Medium | 85.8 | 1020 | 13.4 | 3300 | 9.2 | 390 | 6.8 |
Suitable for mould of shrinkage rod with small reduction in diameter |
| MD60A | 20 | Coarse | 84 | 880 | 13.6 | 2900 | 7.6 | 390 | 6.8 |
Suitable for mould to make straight rod， screws，nut etc |
| MD61B | 22 | Medium | 84 | 880 | 13.3 | 3000 | 9.6 | 360 | 7.1 |
Suitable for heavy hardness stainless steel |
| MD62B | 22 | Medium | 83.5 | 840 | 13.3 | 2800 | 7.6 | 360 | 7.1 |
Suitable for dry wall screw and common stainless steel |
| MD65A | 25 | Medium | 84.1 | 890 | 12.9 | 3000 | 10.1 | 340 | 7.6 |
Suitable for heavy loads straight rod moulds |
| MD70A | 25 | Coarse | 82.5 | 780 | 13.1 | 2800 | 8 | 340 | 7.6 |
Suitable for heavy loads nut moulds |
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