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BS · United Kingdom · 8 designations

425 C 12

425 C 12 is a designation in BS for the material held under material number 1.4317, also listed as G-X 5 CrNi 13 4. It is a material in the category Cast stainless steels. We list 8 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS and JIS.

If you came for one of these

The most-used names for this grade.

About Cast stainless steels

Cast stainless steels are stainless-steel materials produced by casting, combining corrosion resistance with the ability to form complex component shapes. Their composition and mechanical behaviour vary by grade, and they are used for corrosion-resistant cast components such as pumps, valves and process equipment.

This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.

Also known as

8 designations · 5 standards · nothing hidden
This grade’s own namerecorded in our sources as this grade’s own designation under that standard.
Indicativetaken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering.
Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.
UNSUnited States · 1
AISI / SAEUnited States · 1
BSUnited Kingdom · 2

Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here.

Chemical composition

10 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 79.8 %Cr — 12.8 %Ni — 4.3 %Si — 1 %Traces & impurities · 2.2 %

Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade.

Element% by weight
≤ 0.06
≤ 1
≤ 1
0.035
0,025/0,015
12–13.5
≤ 0.7
3.5–5
≤ 0.08
≤ 0.3
CarbonSiliconManganesePhosphorusSulfurChromiumMolybdenumNickelVanadiumCopper
0.01 %0.1 %1 %10 %100 %

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.

ElementAs publishedsource text, verbatimMin% by weightMax% by weightBound
C≤0,060.060Max
Si≤1,001.000Max
P0,0350.0350.035Exact
S0,025/0,015No numeric bound
V≤0,080.080Max
Cr12,0-13,512.00013.500Range
Mn≤1,001.000Max
Ni3,50-5,003.5005.000Range
Cu≤0,300.300Max
Mo≤0,700.700Max

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

Density7,85g/cm³Exact

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.

Similar grades — and why

Selection rule, stated so you can disagree with it: same number class 1.4, a shared category, and a published range for Cr / Ni 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.