Hot working
Initial forging and pressing temperature range: 1100 - 1150oC
Finishing temperature: below 750oC
Generally the recommended method of hot forming is to work the material at between 1300 and 1500 F. Hot forming is only required on heavy sections
Avoid extended holding times above 1000oC as excessive grain growth takes place, which severally reduces ductility
Note: Soaking times to ensure uniformity of temperature are longer for stainless steel than for carbon steels. Use up to 1/2 times the time employed for the same thickness of mild steel.
Stress for a creep rate of 1% in 10 000 h
| Temperature, oC | 550 | 600 | 650 | 700 | 750 |
| Stress, MPa | 50 | 30 | 15 | 5 | 3 |
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