Ferritic heat-resistant
1.4742
TP 430
X10CrAlSi18
Aluminium-silicon ferritic heat-resistant steel with good resistance to sulphur-bearing gases to about 1000 °C.
Chemical composition
mass %| Element | Content |
|---|---|
| CCarbon | ≤0.12 |
| SiSilicon | 0.7–1.4 |
| MnManganese | ≤1 |
| PPhosphorus | ≤0.04 |
| SSulphur | ≤0.03 |
| AlAluminium | 0.7–1.2 |
| CrChromium | 17–19 |
Mechanical properties
room temperature- Scaling temperature (°C)
- 1000
Standard equivalences
- DIN/EN
- X10CrAlSi18
- AISI
- 430 (heat-resistant)
- AFNOR
- Z10 CAS 18
- PN
- H18JS
Typical applications
- Furnaces and gas turbines
- Exhaust valves and thermowell tubes
- Power-plant and reactor construction
- Heat exchangers, muffle tubes, recuperators
Frequently asked questions
What is 1.4742 (TP 430)?
1.4742 (X10CrAlSi18) — Ferritic heat-resistant. Aluminium-silicon ferritic heat-resistant steel with good resistance to sulphur-bearing gases to about 1000 °C.
Which grades are equivalent to 1.4742?
1.4742 corresponds to EN X10CrAlSi18; equivalent designations: AISI 430 (heat-resistant), AFNOR Z10 CAS 18, PN H18JS.
Related grades
Indicative values — verify against the applicable standard before specifying.
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