C15E

3 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 C15E →

C15E · DIN EN 10084-2008

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 10084-2008
Table / clause: Table 3, notes a–d

Carbon-equivalent reference

IIW / CEV：0.1700–0.2800 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）：0.1350–0.2233 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：0.1500–0.2400 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	0.12 ～ 0.18
Si	≤ 0.4 (lower limit not stated)
Mn	0.3 ～ 0.6
P	≤ 0.035 (lower limit not stated)
S	≤ 0.035 (lower limit not stated)

Applicability and limitations

Ladle analysis, mass fraction wt%; the DIN EN 10084:2008-06 cover expressly identifies the German edition of EN 10084:2008; Table 3 follows that source text. Note b: minor composition deviations associated with hardenability requirements must be checked separately against Table 4 and the applicable conditions; they do not widen default ranges, and no such relaxation applies to P/S. Note c: higher S (approximately up to 0.10%) or Pb may be requested for improved machinability; in the higher-S case, the Mn upper limit may increase by 0.15 percentage points. Actual agreed values are not given; do not invent them or apply them automatically. Note d: B in this table improves toughness in the hardened case, not hardenability. Unlisted elements must not be intentionally added without purchaser approval (except as necessary during steelmaking); unspecified does not mean zero. A delivery standard for case-hardening steel does not mean all conditions are suitable for cold heading; verify mechanical properties, hardness and hardenability separately.

Verification notes

Original German Table 3 and its footnotes checked

C15E · EN 10132-2-2000

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: Cold-rolled narrow strip; dimensions and delivery condition subject to applicable conditions
Original record status: Original standard verified
Standard edition: EN 10132-2:2000
Table / clause: Table 1; Table 2; clauses 1,4,7.3–7.5
PDF page references: 1、4、5、7
Unit: Mass fraction (wt%)
Analysis type: Heat analysis

Carbon-equivalent reference

IIW / CEV：0.1700–0.3600Known-element contribution; incomplete value; missing 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）：0.1350–0.2433Known-element contribution; incomplete value; missing Cu, 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：0.1500–0.2600Known-element contribution; incomplete value; missing Mo, 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	0.12 ～ 0.18
Si	≤ 0.4 (lower limit not stated)
Mn	0.3 ～ 0.6
P	≤ 0.035 (lower limit not stated)
S	≤ 0.035 (lower limit not stated)
Cr	≤ 0.4 (lower limit not stated)

Applicability and limitations

Actually based on the official English text of EN 10132-2:2000; This standard covers cold-rolled narrow steel strip intended for heat treatment; it does not constitute a supply guarantee for cold-heading wire.. Table 1 is for heat analysis; Permissible deviations for finished product analysis in Table 2 are registered independently; finished product permissible deviations shall not be used to relax heat analysis. Table 1 Footnote: Elements not listed shall not be intentionally added without the buyer's consent, except additions needed to finish steelmaking; Prevent scrap or other raw materials from introducing elements that could impair properties or intended use; unlisted elements must not be assumed zero.. Values in Mechanical Table 3 are applicable only for 0.30 mm≤t<3.00 mm; Mechanical properties for thicker steel strips shall be agreed upon during inquiry and ordering and cannot be directly extrapolated. Footnote a of Table 3 requires a choice between tensile indicators and hardness; Unless otherwise specified, tensile requirements apply. This page presents the alternatives separately and does not treat both as simultaneous guaranteed requirements.. For cold-rolled +CR, agree a tensile-property interval 150 MPa wide when tensile requirements are selected, or a hardness interval 50 HV wide when hardness is selected.; The outer boundaries of this table do not automatically generate actual ordering windows. Sampling, test methods, microstructure, dimensions, inspection, and other general delivery requirements shall also be verified in conjunction with EN10132-1 and applicable agreements; composition reverse-check does not replace full-item acceptance. This part applies to cold-rolled narrow steel strips for carburizing, with a standard thickness range up to 10mm; The +CR properties of 16MnCr5/17Cr3 shall be agreed upon during ordering.

Verification notes

The complete original English Table 1 was transcribed; Table 2 product-analysis tolerances and Table 3 condition/thickness and alternative tensile-or-hardness requirements have been checked

Permitted product-analysis deviations

C

Permitted deviation: 0.02
Deviation direction: Positive or negative deviation; only one direction is permitted for the same heat
Applicable conditions: Product analysis; For the same heat, deviations may be above the upper limit or below the lower limit, but not both; Heat-analysis limits remain unchanged

Si

Permitted deviation: 0.03
Deviation direction: Only positive deviations are permitted
Applicable conditions: Product analysis; For the same heat, deviations may be above the upper limit or below the lower limit, but not both; Heat-analysis limits remain unchanged

Mn

Permitted deviation: 0.04
Deviation direction: Positive or negative deviation; only one direction is permitted for the same heat
Applicable conditions: Product analysis; For the same heat, deviations may be above the upper limit or below the lower limit, but not both; Heat-analysis limits remain unchanged

P

Permitted deviation: 0.005
Deviation direction: Only positive deviations are permitted
Applicable conditions: Product analysis; For the same heat, deviations may be above the upper limit or below the lower limit, but not both; Heat-analysis limits remain unchanged

S

Permitted deviation: 0.005
Deviation direction: Only positive deviations are permitted
Applicable conditions: Product analysis; For the same heat, deviations may be above the upper limit or below the lower limit, but not both; Heat-analysis limits remain unchanged

Cr

Permitted deviation: 0.03
Deviation direction: Positive or negative deviation; only one direction is permitted for the same heat
Applicable conditions: Product analysis; For the same heat, deviations may be above the upper limit or below the lower limit, but not both; Heat-analysis limits remain unchanged

C15E · DIN EN 10277:2018-09

Original table in an informative annex verified; normative composition requirements and edition still require verification. For reference only.

Material category: Carbon steel
Subcategory: Carbon steel
Material form: Reference record
Composition basis: Heat analysis in an informative annex; for reference only
Verification status: Original table in an informative annex verified; normative composition requirements and edition still require verification
Standard edition: DIN EN 10277:2018-09
Table / clause: Informative Annex A.3
PDF page references: 45
Unit: mass fraction (wt%)
Analysis type: Heat analysis (informative reference)

Carbon-equivalent reference

Composition from an informative standard annex is for reference only. Normative composition and edition remain unverified; standard-range carbon equivalents and reverse matching are disabled.

Composition

Element	Composition requirement
C	0.12 ～ 0.18
Si	0.15 ～ 0.4
Mn	0.3 ～ 0.6
P	≤ 0.025 (lower limit not stated)
S	≤ 0.035 (lower limit not stated)
Cr	≤ 0.4 (lower limit not stated)
Mo	≤ 0.1 (lower limit not stated)
Ni	≤ 0.4 (lower limit not stated)
Cu	≤ 0.3 (lower limit not stated)

Applicability and limitations

The original informative-annex table has been checked and is for reference only. Clause 7.1.2 requires chemical composition to be determined under the cited standard; the formal normative composition and applicable edition remain unverified. Do not use it as a delivery guarantee, a reverse-search acceptance criterion or a basis for standard-range carbon equivalent.

Composition conditions

The original informative-annex table has been checked and is for reference only. Clause 7.1.2 requires chemical composition to be determined under the cited standard; the formal normative composition and applicable edition remain unverified. Do not use it as a delivery guarantee, a reverse-search acceptance criterion or a basis for standard-range carbon equivalent.
Footnote b: A quotation is required to raise S to about 0.10% or add Pb; when S is increased, the Mn upper limit may be raised by 0.15%, but this is not automatic.
Footnote c: Reducing Si requires other deoxidation measures.
Unlisted elements shall not be intentionally added without the buyer’s consent.

Conditional requirement

Footnote
Informative boundary
Source conditions
The original informative annex table has been checked and is for reference only; Main-text 7.1.2 requires chemical composition to be determined under the referenced standards; the normative composition and applicable editions still require verification. It must not be used as a delivery guarantee, reverse-matching criterion or basis for carbon equivalent calculated from standard composition ranges. Main-text reference: EN ISO 683-3 (undated reference; applicable edition awaiting verification).
Footnote
Original-table condition 1
Source conditions
Footnote b: A quotation is required to raise S to about 0.10% or add Pb; when S is increased, the Mn upper limit may be raised by 0.15%, but this is not automatic.
Footnote
Original-table condition 2
Source conditions
Footnote c: Reducing Si requires other deoxidation measures.
Footnote
Original-table condition 3
Source conditions
Unlisted elements shall not be intentionally added without the buyer’s consent.