Chemical composition % of steel HS6-5-3C (1.3345): EN 4957-2000
| C | Si | Mn | P | S | Cr | Mo | W | V |
| 1.25 – 1.32 | max 0.7 | max 0.4 | max 0.03 | max 0.03 | 3.8 – 4.5 | 4.7 – 5.2 | 5.9 – 6.7 | 2.7 – 3.2 |
Properties
Toughness & Ductility: high
Wear Resistance: good
Compressive strength: good
Edge Stability: good
Grindability: high
Hot Hardness (red hardness): good
Applications
Automotive Racing
Powder Pressing
Special Cutting Tools
Technical data Broaches and Reamers
Rolling
Wear parts
Cold Forming / Coining
Shearing / Machine Knives
Material designation
Delivery condition
Annealed
Hardness (HB）: max. 280 | drawn max. 300 HB
Yield Strenght (N/mm² | ksi) : 1,020 | 148
Heat treatment
Annealing Temperature 870 to 900 °C | 1598 to 1652 °F
870 to 900°C (1598 to 1652°F) The steel needs to be protected against decarburi- zation. Through heating of the material is followed by controlled, slow furnace cooling at a maximum cooling rate of 10°C (50°F) per hour, down to ap- prox. 700°C (1292°F). Final cooling in air. Hardness after annealing: 280 Brinell, max.
Stress relieving Temperature 600 to 652 °C |1112 to 1205.6 °F
Rough machining may cause stresses leading to dis- tortion during hardening. These stresses are relieved by heating to 600 to 650°C (1112 – 1202°F). Holding for 2 hours after through heating. Slow furnace cooling down to 500°C (932°F), followed by cooling in air.
Hardening and Tempering Temperature 1050 to 1180 °C | 1922 to 2156 °F
