15MnNbR
15MnNbR is a grade designated under GB. Its recorded composition includes C ≤ 0.18%, Si 0.2–0.55%, P ≤ 0.025%, Mn 1.2–1.6% and Nb 0.01–0.04%. No cross-standard equivalents are recorded for this grade yet.
- Designations 1
Chemical composition
6 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 |
|---|---|
≤ 0.18 | |
0.2–0.55 | |
1.2–1.6 | |
≤ 0.025 | |
≤ 0.015 | |
0.01–0.04 |
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 | ≤0.18 | — | 0.180 | Max |
| Si | 0.2-0.55 | 0.200 | 0.550 | Range |
| P | ≤0.025 | — | 0.025 | Max |
| S | ≤0.015 | — | 0.015 | Max |
| Mn | 1.2-1.6 | 1.200 | 1.600 | Range |
| Nb | 0.01-0.04 | 0.010 | 0.040 | 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: Ni, Cr, 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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