SAW wires
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DIN EN ISO: 24598-A-S S Z CrMo2VNbAWS: A5.23 EB24
SAW (submerged arc welding) wires for creep resisting steels
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Characteristics and application
Submerged arc welding wire for T24 creep resistant steel. The T24 alloy is a modified 2.25%Cr-1%Mo alloy with additions of Nb and V to improve high temperature creep performance. The alloy finds use for waterwalls in ultra-super-critical (USC) boilers in the power generating industry.
Base materials
For matching alloy 24, 2.25%Cr-1%Mo modified, creep resisting ferritic steels.
X7CrMoVTiB 10-10
ASTM: A213 grade T24
Classifications
| DIN EN ISO | 24598-A-S S Z CrMo2VNb |
|---|---|
| AWS | A5.23 EB24 |
Typical analysis in %
| C | Si | Mn | Cr | Mo | V | Nb |
|---|---|---|---|---|---|---|
| 0,09 | 0,25 | 0,55 | 2,35 | 1,00 | 0,26 | 0,04 |
Mechanical properties
| Yield strength (MPa) | ≥470 |
|---|---|
| Tensile strength (MPa) | ≥550 |
| Elongation (%) | 4d/5d: ≥20/18 |
Typical heat treatment
Preheat temperature: Dependent on application either none or 150-200°C
Interpass temperature: max. 300°C
PWHT: Dependent on application either AW or 730-760°C
Approvals
- TÜV 03274, CE
Documentation
Official Fliess publication for the programme as a whole, not for the individual item.
Related products
Related products from the Fliess programme, with the welding process. Not a claim of technical interchangeability.
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