Negotiable
The date of payment from buyers deliver within days
Guangdong
Long-term effective
2017-12-26 06:51
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Company Profile
Guangzhou Changfeng Steel Co., Ltd.By certification [File Integrity]
Contact:Mrs. Helen Xie(Mr.)
Email:
Telephone:
Phone:
Area:Guangdong
Address:Guangdong
Website: http://changfenggz.gpncctv.com/
W.Nr | DIN | AFNOR | AISI/SAE |
1.2312 | X40CrMnMoS8-6 | (40CMD8S) | P20+S |
C | Mn | Si | Cr | Mo | Ni | S+P |
0.35-0.45 | 1.40-1.60 | 0.30-0.50 | 1.80-2.00 | 0.15-0.25 | 0.05-0.10 | 0.015 |
Ac1 | 740°C |
Ms | 310°C |
Pre hardened and tempered | HB278-325(950-1100N/mm²) |
Annealing | 1)Heated to720-750°C,Two to four hours heat preservation, 2)Furnace cooling |
Stress relief |
Preservation
1)Heated to560-650°C and then two to four hours heat
2)Furnace cooling or air cooling
|
Pre hardened | 1)Preheat to 600-650°C 2)Heated to hardening temperature 840-840°C and heat preservation 3)Oil cooling 4)Hardness:HRC51 |
Drawing temper | 1)Immediately after quenching 2)When the 580-650°C,with the 1/inch to heat preservation |