S460M vs Q460C
These two grades are listed as equivalents of each other: their chemistry windows overlap and they serve the same applications. They are not always identical — check the differences below before substituting, especially in certified designs.
S460M
Structural & HSLA Steel
S460M is the −20 °C quality of the TMCP 460 grade to EN 10025-4. Controlled rolling and accelerated cooling deliver 460 MPa yield at only 0.16% carbon maximum, so designers get S460 strength with weldability closer to an S355. For −50 °C service the same chemistry is ordered as S460ML.
Standards: DIN 1.8837 (S460M) · AISI A572 Gr.65 (near) · GB Q460C class (near)
Q460C
Structural & HSLA Steel
Q460C is the 460 MPa class of GB/T 1591, the standard high-strength grade for landmark Chinese steel structures — it was the principal grade of the Beijing National Stadium. Quality C guarantees impact toughness at 0 °C.
Standards: DIN S460ML (near) · AISI A572 Gr.65 (near) · GB Q460C (GB/T 1591)
Chemical composition compared (%)
| Element | S460M | Q460C |
|---|---|---|
| C | ≤0.16 | ≤0.20 |
| Si | ≤0.60 | ≤0.50 |
| Mn | ≤1.70 | ≤1.70 |
| P | ≤0.030 | ≤0.030 |
| S | ≤0.025 | ≤0.030 |
| Nb | ≤0.05 | 0.015–0.06 |
| V | ≤0.12 | 0.02–0.20 |
| Ni | ≤0.80 | — |
Properties compared
| Property | S460M | Q460C |
|---|---|---|
| Yield strength | ≥460 MPa (≤16 mm) | ≥460 MPa (≤16 mm) |
| Tensile strength | 500–660 MPa | 550–720 MPa |
| Impact | 27 J at −20 °C | C grade: 34 J at 0 °C |
| Density | 7.85 g/cm³ | 7.85 g/cm³ |
Sourcing either grade?
Nasteel stocks both families from Shenzhen with EN 10204 3.1 mill certificates by heat number.
Ask for a quotationSee full data sheets: S460M · Q460C. Substitution decisions for certified parts stay with the design authority.