
Industry Park of Shangkeng
Sanmen ,Taizhou ,Zhejiang ,China
Product Features
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Chemical Composition
Product Name |
Ingredient(Wt,% ) | ||||||||
C | Si | Mn | P | S | Cr | Ni | Mo | V | |
P20 | 0.32-0.38 | 0.20-0.40 | 0.70-1.00 | ≤0.025 | ≤0.020 | 1.60-2.00 | / | 0.30-0.55 | / |
Specification & Hardness
Physical Properties
Thermal Expansion Coefficient 10-6m(m*k) |
20~1 00°C | 20~200°C | 20 〜300°C | 20~400°C | 20~500°C | 20 〜600°C | 20 〜700°C |
11.1 | 12.9 | 13.4 | 13.8 | 14.2 | 14.6 | 14.9 |
Thermal Conductivity W/m*k | 20°C | 350°C | 700°C |
35.7 | 33.6 | 32 |
Forging
Item | HeatingTemperature(°c) | Cool Method | Hardness |
Annealing | 710-740 | Furnace Cold | ≤220HB |
Quenching | 840-880 | Oil Cooler | 52-55HRC |
Tempering | 580-680 | Air Cooling | 30-35HRC |
Continuous Cooling Transition (CCT)Map | Tempering Curve |
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Steel Display