STS631J1
STS631J1 is a grade designated under KS. Its recorded composition includes C ≤ 0.09%, Al 0.75–1.5%, Si ≤ 1%, Cr 16–18% and Ni 7–8.5%. No cross-standard equivalents are recorded for this grade yet.
- Designations 1
Chemical composition
8 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 |
|---|---|
≤ 0.09 | |
≤ 1 | |
≤ 1 | |
≤ 0.04 | |
≤ 0.03 | |
16–18 | |
7–8.5 | |
0.75–1.5 |
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 | max 0.09 | — | 0.090 | Max |
| Al | 0.75 - 1.5 | 0.750 | 1.500 | Range |
| Si | max 1 | — | 1.000 | Max |
| P | max 0.04 | — | 0.040 | Max |
| S | max 0.03 | — | 0.030 | Max |
| Cr | 16 - 18 | 16.000 | 18.000 | Range |
| Mn | max 1 | — | 1.000 | Max |
| Ni | 7 - 8.5 | 7.000 | 8.500 | 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.
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