S275J0 vs S275JR
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.
S275J0
Structural & HSLA Steel
S275J0 is the 0 °C impact-tested version of S275, specified where the structure sees sub-ambient service temperatures. Chemistry is held slightly tighter than S275JR to secure the low-temperature toughness.
Standards: DIN 1.0143 (S275J0)
S275JR
Structural & HSLA Steel
S275JR is the middle step of the EN 10025-2 structural family, offering about 17% more yield strength than S235JR at a small price premium. It is a common choice where S235 is marginally too weak but S355 is not needed.
Standards: DIN 1.0044 (S275JR) · AISI A572 Gr.42 (near) · JIS SS490 (near) · GB Q275 (legacy, near)
Chemical composition compared (%)
| Element | S275J0 | S275JR |
|---|---|---|
| C | ≤0.18 | ≤0.21 |
| Mn | ≤1.50 | ≤1.50 |
| P | ≤0.030 | ≤0.035 |
| S | ≤0.030 | ≤0.035 |
| Cu | — | ≤0.55 |
Properties compared
| Property | S275J0 | S275JR |
|---|---|---|
| Yield strength | ≥275 MPa (≤16 mm) | ≥275 MPa (≤16 mm) |
| Tensile strength | 410–560 MPa | 410–560 MPa |
| Impact | J0: 27 J at 0 °C | JR: 27 J at 20 °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: S275J0 · S275JR. Substitution decisions for certified parts stay with the design authority.