24 July 2021 Structural Steel Bar
DIN 1.7337 Structural Steel Bar
DIN 1.7337 is German standard structural steel, corresponding to steel 16CrMo4-4, with good process performance and welding performance. The steel has a good process performance and welding performance, at 500 ~ 550 ℃ have a higher lasting strength. When the temperature exceeds 550 ° C, the oxidation resistance is deteriorated and the creep strength is remarkably reduced. Long-term at 500 ~ 550 ℃, the steel heat strength decreased, the intensity decreased.
Chemical Composition:
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Cu(％) | Mo(％) |
|---|---|---|---|---|---|---|---|---|
| 0.12～0.18 | 0.15 ~ 0.37 | 0.40 ~ 0.70 | ≤0.035 | ≤0.035 | 0.80～1.10 | ≤0.030 | ≤0.030 | 0.40 ~ 0.55 |
Mechanical Propoerties:
| Yield Strength Rp0.2(MPa) | Tensile Strength Rm(MPa) | Elongation δ5 (%): | Reduction of area ψ (%): | Impact energy Akv (J): | Impact toughness value αkv (J/cm2) | Hardness |
|---|---|---|---|---|---|---|
| ≥ 295(30) | ≥ 440(45) | ≥ 22 | ≥ 60 | ≥ 94 | ≥ 118(12) | ≥ 178 HB |