SFNCM830
SFNCM830 is a grade designated under JIS. Its recorded composition includes C ≤ 0.5%, Cr 0.4–3.5%, Mn 0.35–1%, Ni 0.4–3.5% and Mo 0.15–0.7%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include Rm 830–980 N/mm², Re 600–635 N/mm² and HB 241.
- Designations 1
Chemical composition
9 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 |
|---|---|
≤ 0.5 | |
0.15–0.35 | |
0.35–1 | |
≤ 0.03 | |
≤ 0.03 | |
0.4–3.5 | |
0.15–0.7 | |
0.4–3.5 | |
≤ 0.03 |
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 0.5 | — | 0.500 | Max |
| Si | 0.15 - 0.35 | 0.150 | 0.350 | Range |
| P | max 0.03 | — | 0.030 | Max |
| S | max 0.03 | — | 0.030 | Max |
| Cr | 0.4 - 3.5 | 0.400 | 3.500 | Range |
| Mn | 0.35 - 1 | 0.350 | 1.000 | Range |
| Ni | 0.4 - 3.5 | 0.400 | 3.500 | Range |
| Cu | max 0.03 | — | 0.030 | Max |
| Mo | 0.15 - 0.7 | 0.150 | 0.700 | 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
This grade's composition falls outside the published model's validated range (a low-alloy composition window), so no transformation temperature is predicted here.
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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