KCH15R17

1 source records. Standards, editions and conditions are presented separately; matching grade names do not establish interchangeability.

Refer to each source for mass fractions and analysis type. Missing values are not treated as 0. Manufacturer typical values, standard guarantees and measured heat results must remain separate. Use the material selector for calculations and condition selection.

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KCH15R17 · Kobe Steel manufacturer specifications (KCH series)

Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results

Material category: Carbon steel
Subcategory: Carbon steel
Material form: Wire rod
Original record status: Manufacturer source verified
Document edition: Publication edition not stated in the document
Document title: Wire rod and bar specification tables
Table / clause: 6-8-R · KCH R · continuously cast rimmed · series
PDF page references: 30
Unit: Mass fraction (wt%)
Manufacturer: Kobe Steel

Carbon-equivalent reference

Estimate from manufacturer-published ranges, not a standard guarantee or measured heat result; formula applicability requires review against the application and process.

IIW / CEV：0.1800–0.3533Known-element contribution; incomplete value; missing Mo, V CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15; an engineering estimate of welding cold-cracking susceptibility for carbon and low-alloy steels.

Pcm（Ito–Bessyo）：0.1450–0.2400Known-element contribution; incomplete value; missing Mo, V, B Pcm = C + Si/30 + (Mn + Cu + Cr)/20 + Ni/60 + Mo/15 + V/10 + 5B; mainly used for low-carbon low-alloy steels, particularly modern low-carbon pipeline steels; more relevant when C is approximately no higher than 0.11%.

CET：0.1600–0.2700Known-element contribution; incomplete value; missing Mo CET = C + (Mn + Mo)/10 + (Cr + Cu)/20 + Ni/40; used in welding preheat assessment for ferritic steels, subject to the applicability conditions of EN 1011-2.

Composition

Element	Composition requirement
C	0.13 ～ 0.18
Si	≤ 0.05 (lower limit not stated)
Mn	0.3 ～ 0.6
P	≤ 0.03 (lower limit not stated)
S	≤ 0.035 (lower limit not stated)
Cu	≤ 0.3 (lower limit not stated)
Ni	≤ 0.2 (lower limit not stated)
Cr	≤ 0.2 (lower limit not stated)

Applicability and limitations

Kobe Steel manufacturer KCH R · continuously cast rimmed · series, original table composition (PDF page 30), mass fraction wt%; not the original JIS/AISI standards. Equivalent or similar grades are catalogue references only and do not guarantee direct substitution or current supply by Creation Group.

Composition conditions

Original table for the KCH R series, recorded as continuously cast rimmed steel, in mass percent; dashes and unlisted elements are not filled with zero.
Table note: Cu≤0.30%, Ni≤0.20%, Cr≤0.20%.
The manufacturer catalogue does not identify the publication edition; Catalogue information does not establish current supply dimensions.

Verification notes

Manufacturer original table extracted cell by cell from the PDF; page images used to check headers and the shared Cu/Ni/Cr footnote.