HRSC21
HRSC21 is a material in the category Heat-resistant cast steels. Its recorded composition includes C 0.25–0.35%, Si ≤ 1.75%, Cr 23–27%, Mn ≤ 1.5% and Ni 19–22%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include Rm 448 N/mm², Re 241 N/mm² and A 10%.
- Category Heat-resistant cast steels · 82 grades
- Designations 1
About Heat-resistant cast steels
Heat-resistant cast steels are cast ferrous alloys formulated for service at elevated temperatures, where resistance to softening and thermal degradation is important. They are used for furnace components, heat-treatment equipment and other high-temperature plant parts that require cast shapes and dependable mechanical performance during heating.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Chemical composition
7 elements on file · weight %What this alloy is
Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade.
| Element | % by weight |
|---|---|
0.25–0.35 | |
≤ 1.75 | |
≤ 1.5 | |
≤ 0.04 | |
≤ 0.04 | |
23–27 | |
19–22 |
The scale is logarithmic, not the element’s raw share of the alloy — the only honest way to fit 0.01 % and 100 % in one picture, and it means every value here can be compared with every other.
| Element | As publishedsource text, verbatim | Min% by weight | Max% by weight | Bound |
|---|---|---|---|---|
| C | 0.25 - 0.35 | 0.250 | 0.350 | Range |
| Si | max 1.75 | — | 1.750 | Max |
| P | max 0.04 | — | 0.040 | Max |
| S | max 0.04 | — | 0.040 | Max |
| Cr | 23 - 27 | 23.000 | 27.000 | Range |
| Mn | max 1.5 | — | 1.500 | Max |
| Ni | 19 - 22 | 19.000 | 22.000 | Range |
The published column is the source string byte-for-byte, decimal comma and all; Min and Max are the parsed bounds. Elements not listed have no value on file — they are omitted, never inferred.
Predicted transformation temperatures
Not enough recorded composition to predict a transformation temperature for this grade — missing: Mo.
Physical & mechanical properties
An absent property means we hold no value for it — it is left out rather than estimated, interpolated from a neighbouring grade, or filled from a handbook. It does not mean the property is undefined for the material.
Looking for this grade under another name?
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