Ferritic heat-resistant
1.4762
TP 446
X10CrAlSi25
High-chromium aluminium-silicon ferritic heat-resistant steel, especially resistant to sulphur-bearing gases under reducing conditions, to about 1150 °C.
Chemical composition
mass %| Element | Content |
|---|---|
| CCarbon | ≤0.12 |
| SiSilicon | 0.7–1.4 |
| MnManganese | ≤1 |
| PPhosphorus | ≤0.04 |
| SSulphur | ≤0.03 |
| AlAluminium | 1.2–1.7 |
| CrChromium | 23–26 |
Mechanical properties
room temperature- Scaling temperature (°C)
- 1150
Standard equivalences
- DIN/EN
- X10CrAlSi25
- AISI
- 446
- UNS
- S44600
- SS
- 2320
- AFNOR
- Z10 CAS 24
- PN
- H24JS
Typical applications
- Kilns, gas turbines, exhaust valves
- Power-plant and reactor construction
- Steel and aluminium production
- Muffle tubes, recuperators, thermowell tubes
Frequently asked questions
What is 1.4762 (TP 446)?
1.4762 (X10CrAlSi25) — Ferritic heat-resistant. High-chromium aluminium-silicon ferritic heat-resistant steel, especially resistant to sulphur-bearing gases under reducing conditions, to about 1150 °C.
Which grades are equivalent to 1.4762?
1.4762 corresponds to EN X10CrAlSi25; equivalent designations: AISI 446, UNS S44600, SS 2320, AFNOR Z10 CAS 24, PN H24JS.
Related grades
Indicative values — verify against the applicable standard before specifying.
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