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JIS · Japan · 2 designations

SWRCH18K

SWRCH18K is a material in the category Cold extrusion steels. Its recorded composition includes C 0.15–0.2%, Si 0.1–0.35%, Mn 0.6–0.9%, Ni ≤ 0.2% and Cu ≤ 0.3%. We list one designation recorded for this grade, in the standard KS.

If you came for one of these

The most-used names for this grade.
  • KSSWRCH18KThis grade’s own name

About Cold extrusion steels

Cold extrusion steels are engineering materials designed to be shaped into components by cold forming and extrusion. They combine the ductility needed for substantial plastic deformation with the strength and toughness required in cold-formed fasteners, automotive parts and other precision components.

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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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
  • SWRCH18KThis grade’s own name
KSSouth Korea · 1
  • SWRCH18KThis 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

8 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 98.1 %Mn — 0.8 %Cu — 0.3 %Si — 0.2 %Traces & impurities · 0.6 %

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

Element% by weight
0.15–0.2
0.1–0.35
0.6–0.9
≤ 0.03
≤ 0.035
≤ 0.2
≤ 0.2
≤ 0.3
CarbonSiliconManganesePhosphorusSulfurChromiumNickelCopper
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
C0.15 - 0.20.1500.200Range
Si0.1 - 0.350.1000.350Range
Pmax 0.030.030Max
Smax 0.0350.035Max
Crmax 0.20.200Max
Mn0.6 - 0.90.6000.900Range
Nimax 0.20.200Max
Cumax 0.30.300Max

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.

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.