6CrW2Si Tool Steel
a steel grade formed by adding a certain amount of tungsten on the basis of chromium silicon steel.
Because tungsten helps to preserve the finer grains during quenching, and obtains higher toughness in the tempered state. 6CrW2Si steel has higher quenching hardness and certain high temperature strength of 4CrW2Si steel and 5CrW2Si steel. Usually used to manufacture tools that bear impact loads and require high wear resistance, such as pneumatic tools, chisels and stamping dies, cold shear blades, die for punching edges, tools for air hammers, etc.
<<6CrW2Si Tool Steel DATA SHEET>>
6CrW2Si steel chemical composition GB / T1299-2000) w /%:
| C | Si | Mn | Cr | W | P | S |
| 0.55~0.65 | 0.50~0.80 | ≤0.40 | 1.00~1.30 | 2.00~2.70 | ≤0.030 | ≤0.030 |
Equivalent Grade:
| EU EN |
USA – |
Germany DIN,WNr |
France AFNOR |
China GB |
Russia GOST |
Inter ISO |
| 60WCrV8 (1.2550) | S1 | 60WCrV7 | 55WC20 | 6CrW2Si | 5KHV2S | 60WCrV8 |
Equivalent composition
| Grade | C | Cr | W | Si | Mn | V | P | S | Ni | Cu |
| ≤ | ||||||||||
| 6CrW2Si | 0.55-0.65 | 1.00-1.30 | 2.20-2.70 | 0.50-0.80 | ≤0.40 | __ | 0.030 | 0.030 | — | 0.30 |
| SKS4 | 045-0.55 | 0.50-1.00 | 0.50-1.00 | ≤0.35 | ≤0.35 | __ | 0.030 | 0.030 | 0.25 | 0.25 |
| S1 | 0.40-0.55 | 1.00-1.80 | 1.50-3.00 | 0.15-1.20 | 0.10-0.40 | 0.10-0.30 | 0.030 | 0.030 | 0.75 | |
| 1.2550 | 0.55-0.65 | 0.90-1.20 | 1.70-2.20 | 0.70-1.00 | 0.15-0.45 | 0.10-0.20 | 0.030 | 0.030 | — | — |
6CrW2Si Mechanical Properties
| Tensile strength | 160～467 | σb/MPa |
| Yield Strength | 900 | σ 0.2 ≥/MPa |
| Elongation | 16 | δ5≥(％) |
| HBS | 507～422 | – |
| HRC | 30 | – |
Heat Treatment
Quenching the sample 860 ~ 900 ℃. oil cooling.
Features
6CrW2Si steel has higher quenching hardness and high-temperature strength than 4CrW2Si steel and 5CrW2Si steel. It is usually used to manufacture tools that withstand impact loads and require high wear resistance.
Application
Used to make scissors and slicing punches.
Die, die, casting finishing tool, pneumatic chisel used for working under heavy load.
As a hot processing steel. It can produce screws and hot riveting punches.
High temperature die-cast light alloy head.
