Chemical composition %
| C ≤ |
Si ≤ |
Mn ≤ |
P ≤ |
S ≤ |
Cr | Ni |
|---|---|---|---|---|---|---|
| 0.08 | 2.0 | 2.0 | 0.04 | 0.04 | 18-21(23) | 8-11 |
Properties of grade SCS13
| Annealing hardness HBS |
Cold pull hardness HBS |
Preheating temperature ℃ |
Quenching temperature ℃ |
Holding time min |
Hardening medium | Temper temperature ℃ |
After tempering hardness ≥HRC |
|
| salt-bath furnace | controlled atmosphere furnace | |||||||
| 235 | 262 | 788 | 1191 | 1204 | 5～15 | air cooling | 522 | 60 |
| Steel plate/Sheet thickness / mm |
σb MPa |
σs ≥/MPa |
δ Samples from the standard for 50 mm (2 in) |
180 ° of cold bending test | |
| longitudinal | horizontal | ||||
| Hot-rolled/Cold rolling:5 - 150 | 520 | 415 | 16～18 | 2a | 3.5a |
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