Hunan Boyun-Dongfang Powder Metallurgy Co., Ltd
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Carbide Progressive Mold Material 90*150
High performance cemented carbides for molding；Standard Specification For Square Material and Standard Specifications Of The Rings. Also we can produce the your drawing of ring.
Polarization curve (corrosion current reduced, corrosion rate decreased significantly, corrosion resistance improved significantly)
| 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/℃ | |||
| ST37NF | 15 | Nano | 92.0 | 1700 | 13.8 | 4800 | 10 | 430 | 6.3 |
| ST37UF | 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 |