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P21
P21 material is Mold Steel.
Chemical composition of P21, P21 mechanical properties, P21 datasheet, P21 equivalent grade, Heat treatment and temperature process of P21.
P21 property sheet
Related Materials
| P21 |
Chemical Composition of P21
| C: | 0.18 | 0.22 |
| Si: | 0.20 | 0.40 |
| Mn: | 0.20 | 0.40 |
| P: | Max | 0.030 |
| S: | Max | 0.030 |
| Cr: | 0.15 | 0.30 |
| Mo: | Max | Min |
| V: | 0.15 | 0.25 |
| W: | Max | Min |
| Ni＋Cu: | Max | 0.75 |
| Ni: | 3.90 | 4.25 |
| Al: | 1.05 | 1.25 |
Mechanical Properties of P21
| Rp0.2 (MPa) | 715 (≥) |
| Rm (MPa) | 176 (≥) |
| AKV (J) | 34 |
| A (%) | 22 |
| Z (%) | 41 |
| Hardness | HBW 323 |
P21 shape and dimensions
| P21 Round bar: | 1mm-800mm |
| P21 Square bar: | 10mm * 10mm-600mm *600mm |
| P21 Flat bar: | Thickness:8mm-800mm Width:10mm to 1500mm |
| P21 Sheet or Plate: | Thickness:3mm-80mm Width:1.5mm to 1500mm |
| P21 Strip or Coil: | Thickness:0.1mm-3mm Width:1.5mm-1500mm |
| P21 Forgings: | Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes |
©Longhai Special Steel 2025
