30H13N7S2 (3Х13Н7С2, EI72)
valves for automobile engines; heat-resistant steel
valves for automobile engines; heat-resistant steel
Standard | Fe, % | Si, % | Mn, % | Cr, % | Ni, % | P, % | C, % | S, % |
---|---|---|---|---|---|---|---|---|
Standard | Fe, % | Si, % | Mn, % | Cr, % | Ni, % | P, % | C, % | S, % |
GOST 5632-72 | 74.305–79.75 | 2–3 | < 0.8 | 12–14 | 6–7.5 | < 0.03 | 0.25–0.34 | < 0.025 |
Rolling | Standard | Size, mm | Tension | Classifiers | \sigma _{U}, MPa | \sigma_{P}, MPa | \epsilon_L, % | \psi, % | KCU\cdot 10^{3}, \frac{J}{m^2} | Treatment |
---|---|---|---|---|---|---|---|---|---|---|
Rolling | Standard | Size, mm | Tension | Classifiers | \sigma _{U}, MPa | \sigma_{P}, MPa | \epsilon_L, % | \psi, % | KCU\cdot 10^{3}, \frac{J}{m^2} | Treatment |
Rod | GOST 5949-75 | 1180 | 785 | 8 | 25 | 200 |
Standard | Description |
---|---|
Standard | Description |
GOST 5632-72 |
Parameter | Units of measurement | Description |
---|---|---|
Parameter | Units of measurement | Description |
\sigma _{U} | MPa | Ultimate tensile strength |
\sigma_{P} | MPa | Proportionality limit |
\epsilon_L | % | Elongation at break (longitudinal) |
\psi | % | Reduction in cross section on fracture |
KCU\cdot 10^{3} | \frac{J}{m^2} | Impact toughness |