SHANGHAI UNITE STEEL
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DIN1.3243 high speed tool steel, high speed steel,high speed steels, Dia: 2-400mm
Application: Heavy-duty milling cutters of all kinds, highly stressed twist drills and taps, profiled cutting blades, machining of high-strength materials, broaches. The Co content of this tough, high-performance, high-speed steel grade, which offers good cutting-edge endurance, results in high red hardness and resistance to tempering. Consequently, this steel grade is particularly suitable when thermal stresses and discontinuous cutting are involved.
Steel Grade:
DIN- 1.3243 ,%
| C | Si | Mn | P | S | Cr | Mo | V | W | Co | |
| 0,88 - 0,96 | <=0,45 |
| <=0,030 | <=0,030 | 3,80 - 4,50 | 4,70 - 5,20 | 1,70 - 2,00 | 6,00 - 6,70 | 4,50 - 5,00 |
Similar grade: AISI-M35,SKH55,S705,MH55,YXM4
Delivery Condition:
| GB/T1299-2000 | DIN | AISI | |
| Annealed (HB) | <=269 | 240~300 | 230~269 |
Size available:
Round and Square Bar: 2mm -400mm
Flat: thickness:0.6-250mm, width:30-810mm
Length Random Length, Fixed Length, etc.
High Speed Steel got hardness method: 1. Salt bath hardening or vacuum hardening 2. the temperature 1180-1200°C, if need high hardness add 10°C 3. in the temperature 560°C, tempering more than 3 times. The most important: control hardening temperature and time.
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