TIG welding rods
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DIN EN ISO: 21952-A W ZCrMo2VNbAWS: A5.28 R90S-B24
TIG welding rods for creep resisting steels
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Characteristics and application
TIG/GTAW rod for T24 creep resistant steel. The T24 alloy is a modified 2.25%Cr1%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, 2.5%Cr1%Mo modified, creep resisting ferritic steels.
X7CrMoVTiB 10-10
ASTM: A213 T24
Classifications
| DIN EN ISO | 21952-A W ZCrMo2VNb |
|---|---|
| AWS | A5.28 R90S-B24 |
Typical analysis in %
| C | Si | Mn | Cr | Mo | V | Nb |
|---|---|---|---|---|---|---|
| 0,10 | 0,25 | 0,90 | 2,30 | 1,00 | 0,30 | 0,02 |
Mechanical properties
| Yield strength (MPa) | ≥ 600 |
|---|---|
| Tensile strength (MPa) | ≥ 700 |
| Elongation (%) | 4d/5d: ≥15 |
| Charpy-V value (ISO-V, J) | RT ≥ 47 |
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°C - 760°C
Approvals
- TÜV 11949, 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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