24 July 2021 Structural Steel Bar
SAE 4118H Structural Steel Bar
ASTM A29 4118 steel is one of popular alloy steel used as engineering steel. Otai steel is one of leading supplier of ASTM 4118 steel materials in reliable quality.
ASTM 4118 Steel one steel grade in ASTM A29 standard. ASTM 4118 steel is one of popular alloy steel used for engineering purpose, like fasteners, high pressure pipe and more advanced carburized parts, such as gear, shaft, etc. which work in the noncorrosive medium and temperature below 250 ℃, working with nitrogen hydrogen mixture in the medium.
Chemical Composition:
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Mo(％) |
|---|---|---|---|---|---|---|
| 0.18～0.23 | 0.15 ~ 0.35 | 0.70 ~ 0.90 | ≤0.035 | ≤0.040 | 0.40～0.60 | 0.08 ~ 0.15 |
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 |
|---|---|---|---|---|---|---|
| ≥ 758(85) | ≥ 965(95) | ≥ 14.5 | ≥ 45 | ≥ 41 | ≥ 39(4) | ≥ 285 HB |