A216 WCB vs GP240GH
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.
A216 WCB
Structural & HSLA Steel
ASTM A216 WCB is the world’s default cast carbon steel for valve bodies, pump casings and pressure castings — the “B” carbon grade with weldability good enough for cast-to-pipe joints. If a cast steel part has no special temperature duty, it is almost certainly WCB.
Standards: DIN GP240GH / 1.0619 (near) · AISI A216 WCB · JIS SCPH2 (near) · GB ZG270-500 (near)
GP240GH
Structural & HSLA Steel
GP240GH (1.0619) is the EN 10213 cast carbon steel for pressure parts — the European counterpart of ASTM A216 WCB, specified for steam and pressure castings in PED-regulated plants, with elevated-temperature proof-strength values tabulated in the standard.
Standards: DIN 1.0619 (GP240GH) · AISI A216 WCB (near) · JIS SCPH2 (near) · GB ZG270-500 (near)
Chemical composition compared (%)
| Element | A216 WCB | GP240GH |
|---|---|---|
| C | ≤0.30 | 0.18–0.23 |
| Si | ≤0.60 | ≤0.60 |
| Mn | ≤1.00 | 0.50–1.20 |
| P | ≤0.035 | ≤0.030 |
| S | ≤0.035 | ≤0.025 |
| Cr | ≤0.50 (residual) | ≤0.30 |
| Ni | ≤0.50 (residual) | ≤0.40 |
| Mo | ≤0.20 (residual) | ≤0.12 |
| V | ≤0.03 (residual) | ≤0.03 |
| Cu | — | ≤0.30 |
Properties compared
| Property | A216 WCB | GP240GH |
|---|---|---|
| Tensile strength | 485–655 MPa | 410–570 MPa |
| Yield strength | ≥250 MPa | ≥240 MPa |
| Elongation | ≥22% | — |
| 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: A216 WCB · GP240GH. Substitution decisions for certified parts stay with the design authority.