SUP13

2 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.

Open condition selection, comparison and carbon-equivalent tools for SUP13 →

SUP13 · Nippon Steel Wire Rods EXE203 2008.3 / JIS G4801-2005

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

Material category: Spring steels
Subcategory: Spring steels
Material form: Wire rod
Original record status: Manufacturer source verified
Document edition: Cat. No. EXE203 2008.3 PDF; cover copyright 2008
Document title: Nippon Steel Wire Rods
Table / clause: Printed page 18, table index 3
PDF page references: 11
Unit: Mass fraction (%)
Analysis type: The original catalogue does not explicitly identify the analysis type for this table
Manufacturer: NIPPON STEEL CORPORATION

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：0.8667–1.0767Known-element contribution; incomplete value; missing V, Ni 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）：0.6517–0.7850Known-element contribution; incomplete value; missing Ni, 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：0.6900–0.8350Known-element contribution; incomplete value; missing Ni 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	0.56 ～ 0.64
Si	0.15 ～ 0.35
Mn	0.7 ～ 1.0
P	≤ 0.03 (lower limit not stated)
S	≤ 0.03 (lower limit not stated)
Cr	0.7 ～ 0.9
Mo	0.25 ～ 0.35
Cu	≤ 0.3 (lower limit not stated)

Applicability and limitations

Historical Nippon Steel wire-rod catalogue EXE203 2008.3, PDF page 11

printed page 18, JIS G4801-2005. The original catalogue does not explicitly identify the analysis type for this table. Manufacturer range data, not guaranteed standard limits or heat-specific measurements; this does not establish supply by Creation Group. Condition: original-table P/S ≤0.030; ≤0.035 may be accepted by agreement; no widening is applied by default; Only a minimum is given for B in SUP11A.

Composition conditions

Original catalogue mass percentages, historical manufacturer data from 2008.3; Referenced standard names and editions follow the original document; this does not establish that the official texts of those standards have been obtained and verified.
A dash or blank must not be treated as 0; only chemical composition has been checked in this batch. Mechanical properties and actual supply require separate verification under the applicable conditions.
Original-table P/S ≤0.030; ≤0.035 may be accepted by agreement; no widening is applied by default; Only a minimum is given for B in SUP11A.

Verification notes

Grouped tables were expanded in full and checked against original images and notes. Ordinary, residual and conditional elements are kept separate; suffix tables lacking complete base-steel composition are excluded.

SUP13 · CHINA STEEL CORPORATION · Bars and Wire Rods Product Catalogue 2014-C1 / 7.1.12 JIS G4801 (Edition unspecified)

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

Material category: Spring steels
Subcategory: Spring steels
Material form: Bars and wire rod
Original record status: Manufacturer source verified
Document edition: CAT.NO.3-BD-01-2014-C1 (stated on the back cover)
Document title: Bars and Wire Rods Product Catalogue
Table / clause: 7.1.12 JIS G4801 (Edition unspecified)
PDF page references: 21
Unit: Mass fraction (%)
Analysis type: The original catalogue does not explicitly identify the analysis type for this table
Manufacturer: CHINA STEEL CORPORATION

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.

Composition

Element	Composition requirement
C	0.56 ～ 0.64
Si	0.15 ～ 0.35
Mn	0.7 ～ 1.0
P	≤ 0.03 (lower limit not stated)
S	≤ 0.03 (lower limit not stated)
Cr	0.7 ～ 0.9
Mo	0.25 ～ 0.35
Cu	≤ 0.3 (lower limit not stated)

Applicability and limitations

China Steel bar and wire-rod catalogue CAT.NO.3-BD-01-2014-C1, PDF page 21

printed page 19, 7.1.12 JIS G4801 (edition not stated). The original catalogue does not explicitly identify the analysis type for this table. Historical manufacturer range data, not guaranteed standard limits or heat-specific measurements; this does not establish supply by Creation Group. Condition: original-table P/S ≤0.030; by agreement, ≤0.035 is permitted; No widening is applied by default.

Composition conditions

Historical manufacturer 2014-C1 catalogue, bars/wire rod; Where the referenced standard edition is not identified, a year is not borrowed from another catalogue; a catalogue is not upgraded to the official standard text.
A dash or blank must not be treated as zero. Composition data do not establish completeness or applicability of a formula; mechanical properties and supply require separate verification.
Original-table P/S ≤0.030; by agreement, ≤0.035 is permitted; No widening is applied by default.

Verification notes

Merged cells in all 28 catalogue tables were reconstructed geometrically, with no missing cells. Original images, continuation pages and notes are recorded; disputed conditions are withheld.