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JIS · Japan · 2 designations

SWOSC-B

SWOSC-B is a material in the category Spring steels. Its recorded composition includes C 0.51–0.59%, Si 1.2–1.6%, P ≤ 0.035%, Cr 0.55–0.9% and Mn 0.5–0.9%. We list one designation recorded for this grade, in the standard KS. Recorded mechanical properties include Rm 1610–2110 N/mm²; these figures vary with the delivery condition and dimension.

If you came for one of these

The most-used names for this grade.
  • KSSWOSC-BThis grade’s own name

About Spring steels

Spring steels are alloy steels designed to store and release elastic energy repeatedly without permanent deformation. They are characterised by a combination of strength, hardness and resilience, making them suitable for springs, clips, washers and other components subjected to repeated flexing or shock.

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

Also known as

2 designations · 2 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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.
JISJapan · 1
  • SWOSC-BThis grade’s own name
KSSouth Korea · 1
  • SWOSC-BThis grade’s own name

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

Chemical composition

6 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 96.6 %Si — 1.4 %Cr — 0.7 %Mn — 0.7 %Traces & impurities · 0.6 %

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

Element% by weight
0.51–0.59
1.2–1.6
0.5–0.9
≤ 0.035
≤ 0.035
0.55–0.9
CarbonSiliconManganesePhosphorusSulfurChromium
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
C0.51 - 0.590.5100.590Range
Si1.2 - 1.61.2001.600Range
Pmax 0.0350.035Max
Smax 0.0350.035Max
Cr0.55 - 0.90.5500.900Range
Mn0.5 - 0.90.5000.900Range

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.

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.