BS · United Kingdom · 8 designations

S159A

S159A is a designation in BS for the material held under material number 1.4933, also listed as S64152. It is a material in the category Special steels for aviation and aerospace. We list 8 designations recorded for this grade, in the standards UNS, AISI / SAE, BS and SAE AMS.

Material no. 1.4933
Category Special steels for aviation and aerospace · 39 grades
Designations 8

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If you came for one of these

The most-used names for this grade.

About Special steels for aviation and aerospace

Special steels for aviation and aerospace are engineered steels designed to provide controlled mechanical properties and reliable performance in demanding service. Their alloying and heat-treatment capabilities support components that require a combination of strength, toughness and fatigue resistance, including aircraft structures and engine parts.

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

Also known as

8 designations · 4 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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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

S64152This grade’s own name

AISI / SAEUnited States · 1

XM-32This grade’s own name

BSUnited Kingdom · 5

SAE AMSUnited States / Aerospace · 1

5719Indicative

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 — 82.4 %Cr — 11.8 %Ni — 2.5 %Mo — 1.8 %Traces & impurities · 1.6 %

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

Element	% by weight
	0.08–0.13
	≤ 0.35
	0.5–0.9
	0.03
	0.025
	11–12.5
	1.5–2
	2–3
	0.25–0.4
	0.02–0.04

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.

Element	As publishedsource text, verbatim	Min% by weight	Max% by weight	Bound
C	0,08-0,13	0.080	0.130	Range
N	0,02-0,040	0.020	0.040	Range
Si	≤0,35	—	0.350	Max
P	0,03	0.030	0.030	Exact
S	0,025	0.025	0.025	Exact
V	0,25-0,40	0.250	0.400	Range
Cr	11,0-12,5	11.000	12.500	Range
Mn	0,50-0,90	0.500	0.900	Range
Ni	2,00-3,00	2.000	3.000	Range
Mo	1,50-2,00	1.500	2.000	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

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.

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.

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