3312
3312 is a designation in AISI / SAE for the material held under material number 1.5752, also listed as 14NiCr14. It is a material in the category Case hardening steels. We list 53 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, ISO, JIS, GB, GOST, UNI, ČSN, PN, STN, SRPS, MSZ and BDS.
If you came for one of these
The most-used names for this grade.About Case hardening steels
Case hardening steels are steels designed to develop a hard, wear-resistant surface while retaining a tough and ductile core. They are used for components such as gears, shafts and other machine parts exposed to contact wear and cyclic loading.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Also known as
53 designations · 16 standards · nothing hiddenEvery designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here.
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 |
|---|---|
0.14–0.2 | |
≤ 0.4 | |
0.4–0.7 | |
0.025 | |
0.035 | |
0.6–0.9 | |
3–3.5 |
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 | 0,14-0,20 | 0.140 | 0.200 | Range |
| Si | ≤0,40 | — | 0.400 | Max |
| P | 0,025 | 0.025 | 0.025 | Exact |
| S | 0,035 | 0.035 | 0.035 | Exact |
| Cr | 0,60-0,90 | 0.600 | 0.900 | Range |
| Mn | 0,40-0,70 | 0.400 | 0.700 | Range |
| Ni | 3,00-3,50 | 3.000 | 3.500 | 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.
Properties by condition
7 conditions · 24 valuessteelnumber| Delivery state | HB |
|---|---|
| Treated to improve shearability | 255 |
steelnumber| Delivery state | HB |
|---|---|
| Soft annealed | 229 |
steelnumber| Delivery state | HB |
|---|---|
| Treated to hardness range | 179 – 229 |
steelnumber| Delivery state | HB |
|---|---|
| Treated to ferrite-pearlite structure and hardness range | 166 – 217 |
splav| Dimensionmm | RmN/mm² | ReN/mm² | A5% | Z% | KCUkJ/m² |
|---|---|---|---|---|---|
| Ø 15 | 1130 | 930 | 10 | 50 | 880 |
splav| Delivery state | HB |
|---|---|
| (annealing) , GOST 4543-71 | 269 |
splav| Temperature°C | Densityg/cm³ | Elastic modulusGPa | Thermal expansion coefficient10^-6/K | Thermal conductivityW/(m·K) |
|---|---|---|---|---|
| 20 | 7.84 | 200 | — | — |
| 100 | 7.82 | — | 11 | 25 |
| 200 | — | — | 12 | — |
| 300 | 7.76 | — | 13 | — |
| 400 | 7.71 | — | 14.7 | 19 |
| 500 | — | — | 15.3 | — |
| 600 | 7.63 | — | 15.6 | — |
3 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.
Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ.
Similar grades — and why
Selection rule, stated so you can disagree with it: same number class 1.5, a shared category, and a published range for Ni / Cr that overlaps this grade’s. These are neighbours in composition space — they are not equivalents, and none is claimed to be interchangeable with this grade.
Looking for this grade under another name?
Search the catalogue by designation, material number or composition — every name on this page is itself a way in.