Cr8
Cr8 is a grade designated under GB. Its recorded composition includes C 1.6–1.9%, Si 0.2–0.6%, P ≤ 0.03%, Cr 7.5–8.5% and Mn 0.2–0.6%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include HB ≤ 255.
- 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 |
|---|---|
1.6–1.9 — | |
0.2–0.6 | |
0.2–0.6 | |
≤ 0.03 | |
≤ 0.02 | |
7.5–8.5 |
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 | 1.6-1.9 | 1.600 | 1.900 | Range |
| Si | 0.2-0.6 | 0.200 | 0.600 | Range |
| P | ≤0.03 | — | 0.030 | Max |
| S | ≤0.02 | — | 0.020 | Max |
| Cr | 7.5-8.5 | 7.500 | 8.500 | Range |
| Mn | 0.2-0.6 | 0.200 | 0.600 | 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, 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.
Properties by condition
0 conditions · 0 values1 further values are held for this grade under a condition the source did not name — a bound with no quantity attached. They are withheld rather than shown against a guessed condition.
Heat treatment
Supply condition
- QuenchingTest specimen
- AnnealingSupply condition
Conditions the standard permits on delivery. No temperature or medium is published for these, so no order and no alternation is implied.
Source: www.caishuku.com
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