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Description:
7CrSiMnMoV is a high strength, flame and induction hardening steel delivered prehardened to 250-290 HB. The surface of the steel can be flame hardened without water cooling. The hardened and tempered matrix provides good support for the flame hardened layer. 7CrSiMnMoV is particularly suitable for tools with surfaces exposed to abrasion and which can be flame hardened.
Applications:
7CrSiMnMoV is equipped with very good comprehensive mechanical properties. It can be used in all kinds of cold work tool steels, such as sheet punching die, sizing die, trimming die, cold extrusion die, etc. 7CrSiMnMoV can be quenched by flame. 7CrSiMnMoV can take place of T10A , 9Mn2V and Cr12MoV to manufacture cold work dies requiring high toughness. The service life of the dies made of 7CrSiMnMoV is significantly improved. If the cold work dies demand much higher toughness, Cr8Mo2SiV (DC53), Cr12Mo1V1 (D2), 5Cr3Mn1SiMo1V (S7) and Cr5Mo1V (A2) are for your selections.
C |
Si |
Mn |
Mo |
V |
Cr |
P/S |
|
7CrSiMnMoV |
0.65-0.75 |
0.85-1.15 |
0.65-1.05 |
0.20-0.50 |
0.15-0.30 |
0.90-1.20 |
<=0.03 |
Thermal processing of 7CrSiMnMoV:
7CrSiMnMoV should be preheated to 800~900℃before forging.
Following table is the forging technology of 7CrSiMnMoV:
Item |
Heating temperature/℃ |
Initial forging temperature/℃ |
Final forging temperature/℃ |
Cooling |
Ingot |
1150~1200 |
1100~1150 |
800~850 |
Slow cooling |
Billet |
1100~1150 |
1050~1100 |
800~850 |
Slow cooling |
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