S7 Shock-Resisting Tool Steel
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Gnee Steel (Tianjin) Co., Ltd. is one of the most professional s7 shock-resisting tool steel manufacturers and suppliers in China. Welcome to wholesale customized s7 shock-resisting tool steel at competitive price from our factory. Good service and quality products are available.
S7 Special Steel Products Description
S7 Shock-Resisting Tool Steel is a shock resisting tool steel with excellent toughness, high strength and medium wear resistance. Due to its maximum shock resistance and high compression strength, it has good deformation resistance and retains good toughness during use. this grade can be machine easily in the annealed condition and it can be heat treated. When quenched in air this material exhibits minimal distortion on hardening. S7 Carbon Tool Steel has medium hot work characteristics, making it a tool steel used for both cold and warm shock applications, as well as molds that require high hardness.
Shock resisting tool steels are available in a number of grades. They are typically selected based on the particular combination of properties required for a specific application. S7 carbon steel provides an excellent combination of properties with a hardness and wear resistance that is slightly less than S5 making it an excellent general impact resisting steel for a wide range of applications.
S7 High Speed Steel Chemical Composition
|
Element |
Content (%) |
|---|---|
|
Iron, Fe |
93.85 |
|
Carbon, C |
0.45-0.55 |
|
Manganese, Mn |
0.20-0.80 |
|
Silicon, Si |
0.20-1.00 |
|
Chromium, Cr |
3.00-3.50 |
|
Molybdenum, Mo |
1.30-1.80 |
|
Vanadium, V |
0.20-0.30 |
|
Copper, Cu |
0.25 |
|
Phosphorus, P |
0.03 |
|
Sulfur, S |
0.03 |
S7 High Carbon Steel Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Rockwell C (air cooled from 941°C, 649°C temper temperature) | 41 | 41 |
| Hardness, Rockwell C (air cooled from 941°C, 449°C temper temperature) | 53 | 53 |
| Hardness, Rockwell C (air cooled from 941°C, 149°C temper temperature) | 57 | 57 |
| Modulus of elasticity | 207 GPa | 30000 ksi |
| Charpy impact (V-notch; air cooled from 941°C; 425°C temper temperature) | 13.6 J | 10.0 ft-lb |
| Charpy impact (V-notch; air cooled from 941°C; 649°C temper temperature) | 16.3 J | 12.0 ft-lb |
| Charpy impact (V-notch; air cooled from 941°C; 200°C temper temperature) | 16.9 J | 12.5 ft-lb |
| Machinability (1% carbon steel) | 70.0 - 75.0% | 70.0 - 75.0% |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
S7 Hot Rolled Carbon Steel Thermal Properties
| Properties | Conditions | ||
|---|---|---|---|
| T (°C) | Treatment | ||
| Thermal expansion | 12.6 x 10-6/ºC | 20-200 | - |
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