Active Member
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[China]
Address: Boyun Innovation Industrial Zone, 346# Leifeng Ave,Yuelu Distric,Changsha,Hunan,China
Contact name:Lyu
Hunan Boyun-Dongfang Powder Metallurgy Co., Ltd |
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Tungsten Carbide Blocks
Technical features I: High performance cemented carbides for molding.Polarization curve (corrosion current reduced, corrosion rate decreased significantly, corrosion resistance improved significantly)
Technical features II: multi-layer cemented carbide,Produce variable mechanical properties to satisfied different working conditions.
Table for material properties of cemented carbide stamping mold:
| Grade | Co% | WC Grain size | Hardness | Density | Flexural Strength | Fracture Toughness | Elastic Modulus | Coefficient of Thermal Expansion | |
| HRA | HV30 | g/cm3 | MPa | N/mm2 | GPa | 10-6/℃ | |||
| MD37NF | 15 | Nano | 92.0 | 1700 | 13.8 | 4800 | 10 | 430 | 6.3 |
| MD37UF | 15 | Ultra-fine | 91.5 | 1630 | 13.8 | 4200 | 11 | 430 | 6.3 |
| MD15 | 12 | Ultra-fine | 92.2 | 1730 | 14.1 | 5100 | 10 | 470 | 5.7 |
| MD10 | 10 | Sub-Micron | 91.7 | 1660 | 14.4 | 4300 | 11 | 490 | 5.4 |
| MD33A | 12 | Sub-Micron | 90.3 | 1470 | 14.2 | 4000 | 14 | 470 | 5.7 |
| MD20 | 13 | Sub-Micron | 90.6 | 1500 | 14.2 | 4100 | 15 | 460 | 5.8 |
| MD36 | 15 | Sub-Micron | 89.4 | 1360 | 13.8 | 3900 | 16 | 430 | 6.3 |
| MD16 | 6 | Fine | 90.5 | 1500 | 14.8 | 3200 | 12 | 530 | 4.9 |
| MD40B | 12 | Fine | 89.5 | 1380 | 14.2 | 3800 | 17 | 470 | 5.7 |
| MD40C | 12 | Fine | 89.7 | 1400 | 14.1 | 3800 | 16 | 470 | 5.7 |
| MD55 | 20 | Fine | 86.4 | 1060 | 13.5 | 3100 | - | 390 | 6.8 |
| MD40A | 12 | Medium | 88.9 | 1310 | 14.2 | 3700 | 27 | 470 | 5.7 |
| MD45A | 15 | Medium | 87.9 | 1200 | 13.9 | 3600 | - | 430 | 6.3 |
