Characteristics of steel grade 70
Steel grade 70 is a non-alloy spring steel produced to the requirements of GOST 14959 and DSTU 8429.
Classification: Carbon spring steel.
Products: Flat steel and rolled sections including shapes, ingots, forgings, stamped parts.
Chemical composition of steel grade 70 based on heat analysis, %
| С | Si | Mn | S | P | Cr |
| 0,67 - 0,75 | 0,17 - 0,37 | 0,50 - 0,80 | ≤0,025 | ≤0,025 | ≤0,25 |
Approximate conditions for thermal treatment and mechanical properties of steel grade 70 (GOST 14959)
| Quenching temperature, ºС | Quenching media | Tempering temperature, ºС | Yield strength, N/mm2 (min) | Tensile strength, N/mm2 (min | Elongation, % (min) | Reduction of area, % (min) |
| 830 | Масло | 470 | 835 | 1030 | 9 | 30 |
Equivalents of steel grade 70
| USA | 1065, 1069, 1070, G10690, G10700 |
| Japan | S70C-CSP |
| European Union | 2CS67, C67, C70D |
| China | 65, 70 |
| Sweden | 1770 |
| Australia | 1070, K1070S |
Application:
Steel grade 70 is used to make parts, which, after quenching and tempering, are required to have higher strength and elastic properties, e.g. shocks and springs.
Welding
Not used for welded structures.
Get in touch
Find the nearest office
Subscribe to our newsletter