20GL
wheels, sprockets and other jagged crowns. parts, which are requirements for strength and toughness, operating under the influence of static and dynamic loads
wheels, sprockets and other jagged crowns. parts, which are requirements for strength and toughness, operating under the influence of static and dynamic loads
Standard | Fe, % | Si, % | Mn, % | P, % | C, % | S, % |
---|---|---|---|---|---|---|
GOST 977-88 | 97.67–98.45 | 0.2–0.4 | 1.2–1.6 | < 0.04 | 0.15–0.25 | < 0.04 |
Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\epsilon_L$$, % | $$\psi$$, % | $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ | Treatment |
---|---|---|---|---|---|---|---|---|---|---|
Castings | GOST 977-88 | 540 | 275 | 18 | 25 | 491 | Normalization of 880-900 ° C, 600-650 ° C and Holidays | |||
Castings | GOST 977-88 | 530 | 334 | 14 | 25 | 383 | Tempering 870-890 ° C, 620-650 ° C and Holidays | |||
Castings | GOST 21357-87 | 500 | 300 | 20 | 35 | Normalization | ||||
Castings | GOST 21357-87 | 550 | 400 | 15 | 30 | Hardening and tempering |
USA | Germany |
---|---|
J02505 | 1.1131 (G17Mn5) |
Standard | Description |
---|---|
GOST 977-88 |