42CrMo steel plate
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Quality/Safety Certification: 0.00
alloy steel bar 42CrMo
1.Technology:EF/ESR/EAF+VD+LF
2.Surface treatment:Black/polished/machined/turned
3.Specialty Manuf
Chemical composition: 42CrMo
| C | Si | Mn | Cr | Mo | P | S |
| 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | 0.15-0.25 | ≤0.035 | ≤0.035 |
42CrMo Size:
| Round | Diameter | Length | |
| 50mm-500mm | 2000mm-5800mm | ||
| Steel plate | Thickness | Width | Length |
| 20-400mm | 80-1000mm | 2000mm-5800mm | |
Pre-heat treatment
1.Annealing:heat to 840-860°c,keep temperature2h,furnace cold ,hardness≤217HBS
2.Normalization:heat to 850-900°c,air cool
3.High temperature tempering:heat to 680-700°c,air cold,hardness ≤217HBS
Mechnical property
| Tempering temperature/°c | σb/MPa | σs/MPa | δ5(%) | ψ(%) | ak/J.cm-2 |
| 450 | 1350 | 1250 | 41 | 48 | 60 |
| 500 | 1220 | 1120 | 44 | 52 | 80 |
| 550 | 1120 | 1050 | 46.5 | 56 | 110 |
| 650 | 950 | 880 | 56 | 64.5 | 170 |
Characteristic:
1.High strength and toughness.
2.Good hardenability and low impact toughness.
Application:
Make large-medium plastic mould
