C8C

6 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 C8C →

C8C · EN 10263

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

Material form: Drawn wire
Original record status: Reference transcription of standard
Standard edition: BS EN 10263-2:2017
Table / clause: Table 2

Carbon-equivalent reference

IIW / CEV：0.1017–0.1750 Known-item contribution, not a complete value; missing Cr, Mo, V, Ni, Cu 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）：0.0725–0.1258 Known-item contribution, not a complete value; missing Cu, Cr, Ni, 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：0.0850–0.1450 Known-item contribution, not a complete value; missing Mo, Cr, Cu, 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	0.06 ～ 0.1
Si	≤ 0.1 (lower limit not stated)
Mn	0.25 ～ 0.45
P	≤ 0.02 (lower limit not stated)
S	≤ 0.025 (lower limit not stated)
Al	0.02 ～ 0.06

Applicability and limitations

BS EN 10263-2:2017; Heat analysis, mass percent; Values without a stated range are maxima; Notes below the table are retained. No edition is stated on the website; Displayed under this source edition; contract applicability is not established

Verification notes

Standard source: BS EN 10263-2:2017 · Table 2View associated products →

C8C · ISO 4954

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

Material form: Cold-heading wire
Original record status: Reference transcription of standard
Standard edition: ISO 4954:2018
Table / clause: Table A.2

Carbon-equivalent reference

IIW / CEV：0.1017–0.2950Known-element contribution; incomplete value; missing V; coupled-element constraints require separate checks; the entire envelope is not guaranteed to be realizable 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）：0.0725–0.1675Known-element contribution; incomplete value; missing V, B; coupled-element constraints require separate checks; the entire envelope is not guaranteed to be realizable 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：0.0850–0.1925 Independent-element envelope of standard ranges, not measured heat results; coupled-element constraints require separate checks, and the entire envelope is not guaranteed to be realizable 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	0.06 ～ 0.1
Si	≤ 0.1 (lower limit not stated)
Mn	0.25 ～ 0.45
P	≤ 0.02 (lower limit not stated)
S	≤ 0.025 (lower limit not stated)
Cr	≤ 0.3 (lower limit not stated)
Ni	≤ 0.3 (lower limit not stated)
Mo	≤ 0.1 (lower limit not stated)
Al	0.02 ～ 0.06
Cu	≤ 0.3 (lower limit not stated)
Cr+Ni+Mo	≤ 0.5 (lower limit not stated)

Applicability and limitations

ISO 4954:2018; Heat analysis, mass percent; Values without stated ranges are maxima; See the original page for the complete table notes. No edition is stated on the website; Displayed under this source edition; contract applicability is not established; ISO4954:2018 Table A.2 applies to steels not intended for heat treatment after cold working, heat analysis wt%; The original text specifies Cr+Ni+Mo total ≤0.50%; in addition to individual element limits, the total must also be satisfied; Elements not entered shall remain unknown and not be treated as 0; Optional deoxidation/aluminum substitution and Mn agreements shall still be verified against explicit ordering conditions.

Combined limits

Element-sum limits

Elements concerned
- Cr
- Ni
- Mo
Upper limit
0.5

Verification notes

Standard source: ISO 4954:2018 · Table A.2View associated products →

C8C · ISO 4954-2018

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

Material category: Carbon steel
Subcategory: Steel not heat-treated after cold working
Material form: Reference record
Original record status: Original standard verified
Standard edition: ISO 4954:2018
Table / clause: Table A.2

Carbon-equivalent reference

IIW / CEV：0.1017–0.2950Known-element contribution; incomplete value; missing V; ordering or conditional requirements remain unresolved; coupled-element constraints require separate checks; the entire envelope is not guaranteed to be realizable 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）：0.0725–0.1675Known-element contribution; incomplete value; missing V, B; ordering or conditional requirements remain unresolved; coupled-element constraints require separate checks; the entire envelope is not guaranteed to be realizable 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：0.0850–0.1925 Independent-element envelope of standard ranges, not measured heat results; ordering or conditional requirements remain unresolved; coupled-element constraints require separate checks, and the entire envelope is not guaranteed to be realizable 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	0.06 ～ 0.1
Si	≤ 0.1 (lower limit not stated)
Mn	0.25 ～ 0.45
P	≤ 0.02 (lower limit not stated)
S	≤ 0.025 (lower limit not stated)
Cr	≤ 0.3 (lower limit not stated)
Ni	≤ 0.3 (lower limit not stated)
Mo	≤ 0.1 (lower limit not stated)
Cu	≤ 0.3 (lower limit not stated)
Al	0.02 ～ 0.06

Applicability and limitations

ISO 4954:2018, Table A.2 gives heat analysis; A single value is a maximum; a dash is not zero. ; Product-analysis tolerances are listed separately under Table 2/3 of the standard and do not directly widen the heat-analysis composition ranges. ; Applicable to steels that do not undergo heat treatment after cold working. ; Al may be replaced by other elements with similar effects; Al cannot be required to reach the lower limit listed in the table without conditions. ; A lower Mn may be specified for C2C/C20C/C20GC/C25C, with a range width of 0.20%; Subject to ordering agreement.

Combined limits

Element-sum limits

Elements concerned
- Cr
- Ni
- Mo
Upper limit
0.5

Conditional composition lower limit

Al

Applicable conditions: May be replaced by other elements with a similar effect

Verification notes

The original standard, Table A.2 and footnotes have been checked

C8C · EN 10263-2-2017

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

Material form: Reference record
Original record status: Original standard verified
Standard edition: EN 10263-2-2017
Table / clause: Table 2 and notes a–f

Carbon-equivalent reference

Estimates are presented separately for each applicable composition condition. Match the actual ordering conditions; ranges must not be combined.

Default composition in Table 2, Al deoxidation condition

Default composition in Table 2, Al deoxidation condition; Al is replaced by elements with equivalent effect; the replacement elements and contents require separate verification

Composition record (conditional branches apply; this is not an unconditional requirement)

Element	Composition requirement
C	0.06 ～ 0.1
Si	≤ 0.1 (lower limit not stated)
Mn	0.25 ～ 0.45
P	≤ 0.02 (lower limit not stated)
S	≤ 0.025 (lower limit not stated)
Al	0.02 ～ 0.06

Applicability and limitations

Heat-analysis mass fractions wt%; See Table 3 separately for product-analysis tolerances. ; Note b permits aluminum to be replaced by other elements with a similar effect; composition of replacement elements must not be inferred before they are identified. ; Unlisted elements must not be intentionally added without purchaser consent, except additions needed to finish the heat; Residual elements must not impair properties or suitability; unlisted content does not mean zero. ; This standard covers cold heading and cold extrusion; actual delivery condition, dimensions, surface and mechanical properties require separate verification, and no supply product is created automatically.

Original condition-branch records

Default composition in Table 2, Al deoxidation condition

Element	Composition requirement
C	0.06 ～ 0.1
Si	≤ 0.1 (lower limit not stated)
Mn	0.25 ～ 0.45
P	≤ 0.02 (lower limit not stated)
S	≤ 0.025 (lower limit not stated)
Al	0.02 ～ 0.06

Default composition in Table 2, Al deoxidation condition; Al is replaced by elements with equivalent effect; the replacement elements and contents require separate verification

Element	Composition requirement
C	0.06 ～ 0.1
Si	≤ 0.1 (lower limit not stated)
Mn	0.25 ～ 0.45
P	≤ 0.02 (lower limit not stated)
S	≤ 0.025 (lower limit not stated)

A condition branch must be selected

Yes

Verification notes

The original Table 2 and footnotes have been checked; Optional additions and agreed provisions require separate confirmation

C8C · DIN EN 10263-2-2018

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

Material form: Reference record
Original record status: Original standard verified
Standard edition: DIN EN 10263-2:2018-02
Table / clause: Tabelle 2 and footnote a–f; Tabelle 3 product-analysis tolerances require separate verification
PDF page references: 1、9
Unit: Mass fraction (wt%)
Analysis type: Heat analysis

Carbon-equivalent reference

Estimates are presented separately for each applicable composition condition. Match the actual ordering conditions; ranges must not be combined.

Default composition in Table 2, Al deoxidation condition

Default composition in Table 2, Al deoxidation condition; Al is replaced by elements with equivalent effect; the replacement elements and contents require separate verification

Composition record (conditional branches apply; this is not an unconditional requirement)

Element	Composition requirement
C	0.06 ～ 0.1
Si	≤ 0.1 (lower limit not stated)
Mn	0.25 ～ 0.45
P	≤ 0.02 (lower limit not stated)
S	≤ 0.025 (lower limit not stated)
Al	0.02 ～ 0.06

Applicability and limitations

DIN EN 10263-2:2018-02 is the German-language edition of EN 10263-2:2017; This record was verified against heat analysis and footnotes in Table 2 of the official German edition. ; Heat-analysis mass fractions wt%; See Table 3 separately for product-analysis tolerances. ; Note b permits aluminum to be replaced by other elements with a similar effect; composition of replacement elements must not be inferred before they are identified. ; Unlisted elements must not be intentionally added without purchaser consent, except additions needed to finish the heat; Residual elements must not impair properties or suitability; unlisted content does not mean zero. ; This standard covers cold heading and cold extrusion; actual delivery condition, dimensions, surface and mechanical properties require separate verification, and no supply product is created automatically.

Original condition-branch records

Default composition in Table 2, Al deoxidation condition

Element	Composition requirement
C	0.06 ～ 0.1
Si	≤ 0.1 (lower limit not stated)
Mn	0.25 ～ 0.45
P	≤ 0.02 (lower limit not stated)
S	≤ 0.025 (lower limit not stated)
Al	0.02 ～ 0.06

Default composition in Table 2, Al deoxidation condition; Al is replaced by elements with equivalent effect; the replacement elements and contents require separate verification

Element	Composition requirement
C	0.06 ～ 0.1
Si	≤ 0.1 (lower limit not stated)
Mn	0.25 ～ 0.45
P	≤ 0.02 (lower limit not stated)
S	≤ 0.025 (lower limit not stated)

A condition branch must be selected

Yes

Verification notes

Row 3 of Table 2 and its footnotes verified against the official German edition DIN EN 10263-2:2018-02; The EN version year adopted is 2017.

C8C · BEXG 021-2020

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

Material category: Cold-heading steel
Subcategory: Cold-heading steel
Material form: Wire rod
Original record status: Manufacturer source verified
Document edition: BEXG 021-2020, sixteenth revision stated on the cover; issued and effective on 2020-12-29; The latest original document available on this computer only
Document title: Technical delivery conditions for cold-heading steel wire rod for automotive parts
Table / clause: Table 1
PDF page references: 6
Unit: Mass fraction (wt%)
Manufacturer: Baoshan Iron & Steel Co., Ltd. (Baosteel)

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：0.1017–0.2537Known-element contribution; incomplete value; missing 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）：0.0725–0.1532Known-element contribution; incomplete value; missing 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：0.0850–0.1760 Envelope of independent element limits from manufacturer data; neither standard guarantee values nor measured heat results 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	0.06 ～ 0.1
Si	≤ 0.1 (lower limit not stated)
Mn	0.25 ～ 0.45
P	≤ 0.02 (lower limit not stated)
S	≤ 0.025 (lower limit not stated)
Al	0.02 ～ 0.06
Cr	≤ 0.2 (lower limit not stated)
Ni	≤ 0.2 (lower limit not stated)
Cu	≤ 0.2 (lower limit not stated)
Mo	≤ 0.06 (lower limit not stated)

Applicability and limitations

Baosteel BEXG 021-2020, Table 1, row 44, PDF page 6; heat-analysis composition in wt%, hot-rolled wire rod. 2020 is the original edition available locally, with no claim that it is the company’s current latest edition. Special conditions and actual supply require separate confirmation.

Composition conditions

Table 1 and its continuation give heat composition, in mass fractions wt%; The product is hot-rolled wire rod for automotive parts.
Unless expressly stated otherwise, residual Cr≤0.20%, Ni≤0.20%, Cu≤0.20% and Mo≤0.06% apply; Specific requirements in the table and additional notes take precedence.
A dash does not mean zero; Composition outside the table is not inferred from grade names or referenced standards.

Verification notes

Table 1 original images checked page by page, physical pages 3–10; continuation values and other columns kept separate; two disputed rows excluded.

Source footnotes

Al:0.020-0.060