24 July 2021 Hardware Tool Steel Sheet
JDH2 Hardware Tool Steel Sheet
JDH2 steel is an excellent toughness hot work die steel, while maintaining high temperature strength, has good high temperature impact toughness and thermal fatigue resistance, especially for large cross-section hot forging die, roll forging die, and its cheap , Good price.
Mechanical properties:
- Impact energy absorption:
The impact absorption energy is 65.5J / 101J / 235J / 294J / 294J at a temperature of 20 ° C / 300 ° C / 600 ° C / 650 ° C / 700 ° C.
- Resistance to tempering of steel:
| Tempering (° C) | 100 ° C | 200 ° C | 300 ° C | 400° C | 450° C | 500° C | 525° C | 550° C | 575° C | 580° C | 600° C | 620° C | 640° C | 650° C | 675° C | 680° C | 700° C |
| Hardness(HRC) | 52 | 52 | 48 | 46 | 46 | 43 | 45 | 45 | 45 | 43 | 43 | 40 | 39 | 37 | 32 | 30 | 28 |
- Hot workability:
| Temperature : | 800° C | 900° C | 1000° C | 1100° C | 1100° C |
| Tensile Strength: | 162.3Mpa | 145.9Mpa | 75.4Mpa | 41.76Mpa | 27.09Mpa |
| Elogation: | 39.7% | 49.6% | 59.1% | 74.9% | 77.7% |
- Tensile properties:
| Temperature : | 25° C | 300° C | 600° C | 650° C | 700° C |
| Yield Strength: | 1236Mpa | 1073Mpa | 741Mpa | 648Mpa | 520Mpa |
| Tensile Strength: | 1395Mpa | 1291Mpa | 886Mpa | 620Mpa | 356Mpa |
- Hot working specifications:
Heating temperature 1150 ~ 1180 ° C, starting temperature 1150 ~ 1180, termination temperature ≥ 930 ° C
- Quenching and tempering specifications:
Quenching temperature 900 ~ 920 ° C, 20 ~ 60 ° C oil cooled to room temperature, hardness 42 -44HRC. Tempering temperature 560 ~ 580 ° C, the hardness of 40 ~ 42HRC.
- Typical application examples:
For large cross-section hot forging die, roll forging die.