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20MN5

4 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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20Mn5 · EN 10269-2013

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 10269-2013
Table / clause
Table1 quenched-and-tempered steels and note a/b/c
PDF page references
17、19

Carbon-equivalent reference

IIW / CEV:0.3367–0.6067Known-element contribution; incomplete value; missing V, Cu; 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):0.2200–0.3517Known-element contribution; incomplete value; missing Cu, 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:0.2700–0.4200Known-element contribution; incomplete value; missing Cu; coupled-element constraints require separate checks; 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

ElementComposition requirement
C0.17 ~ 0.23
Si≤ 0.4 (lower limit not stated)
Mn1.0 ~ 1.5
P≤ 0.03 (lower limit not stated)
S≤ 0.035 (lower limit not stated)
Al≥ 0.02 (upper limit not stated)
Cr≤ 0.4 (lower limit not stated)
Mo≤ 0.1 (lower limit not stated)
Ni≤ 0.4 (lower limit not stated)

Applicability and limitations

EN10269:2013 Table 1, section on steels for quenching and tempering; official BS adoption in English, PDF17 and footnotes PDF19; heat analysis wt%.. ; The Al column is total aluminum; For ≥.020 without a specified upper limit, only the lower limit is retained; no upper limit shall be created. ; Note b sulfur agreement applies only to grades with Note b; 27NiCrMoV15-6 magnetic properties Note c carbon upper limit .28 selected separately. ; Elements not listed shall not be intentionally added without the consent of the purchaser, except additions needed to finish steelmaking; Blank does not represent zero. ; Product analysis deviation, mechanical properties, heat treatment, and cold-heading supply suitability shall be verified separately, and not automatically added to the product center.

Combined limits

Element-sum limits
  • Elements concerned
    • Cr
    • Mo
    • Ni
    Upper limit
    0.63

Verification notes

Quenched-and-tempered steels in official English Table 1 and the applicable footnotes were visually checked

20Mn5 · NF EN 10269:1999

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
Reference record
Original record status
Original-standard record
Standard edition
NF EN 10269:1999
Table / clause
EN 10269:1999 Table 1 and footnotes 1 and 2
PDF page references
2、21、23

Carbon-equivalent reference

IIW / CEV:0.3367–0.6067Known-element contribution; incomplete value; missing V, Cu; 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):0.2200–0.3517Known-element contribution; incomplete value; missing Cu, 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:0.2700–0.4200Known-element contribution; incomplete value; missing Cu; coupled-element constraints require separate checks; 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

ElementComposition requirement
C0.17 ~ 0.23
Si≤ 0.4 (lower limit not stated)
Mn1.0 ~ 1.5
P≤ 0.035 (lower limit not stated)
S≤ 0.035 (lower limit not stated)
Al≥ 0.02 (upper limit not stated)
Cr≤ 0.4 (lower limit not stated)
Mo≤ 0.1 (lower limit not stated)
Ni≤ 0.4 (lower limit not stated)

Applicability and limitations

The cover of NF EN 10269:1999 explicitly adopts EN 10269:1999; Preserve the correspondence between the French adoption version and the European version; do not label as other countries or new editions. ; Table 1 gives heat-analysis mass percentages; Single values in P and S columns are upper limits; other single values are parsed according to the inequality signs in the original table; Unspecified elements shall not be filled as zero. ; Applies to billets, bars and wire rod of steels and nickel alloys for fasteners with specified high- or low-temperature properties.; Cold heading and actual supply must be verified in conjunction with delivery condition, dimensions, and process. ; Table 1 Footnote 1: Elements not listed in the table shall not be intentionally added without the buyer's consent (except additions needed to finish steelmaking); Elements that affect properties must be prevented from being introduced via scrap steel, etc.. ; This record only verifies the heat analysis composition in Table 1; product analysis tolerances in Table 2 shall not be automatically added to the heat limits.

Combined limits

Combined-element limits
  • Requirement
    Cr+Mo+Ni≤0.63%
    Element coefficient
    Cr
    1
    Mo
    1
    Ni
    1
    Upper limit
    0.63

20Mn5 · Ovako Product Catalogue CO-117 ENG 24:07 (2024)

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
Bars, tubes, rings and precomponents
Composition basis
Manufacturer typical/nominal values, not guaranteed ranges
Original record status
Manufacturer source verified
Document edition
CO-117 ENG 24:07 ©Ovako 2024
Document title
Ovako Product Catalogue
PDF page references
44
Unit
Interpreted as mass fraction (%) using other documents from the same manufacturer; the unit is not explicitly stated in this table
Analysis type
Typical composition analysis
Manufacturer
Ovako

Source document

Carbon-equivalent reference

Manufacturer typical single values are composition references only; no range estimate is made. They are neither standard guarantees nor measured heat results; Formula applicability requires review against the intended use and process.

IIW / CEV: manufacturer typical/nominal single values are shown for reference only; standard-range carbon equivalent is not calculated
Pcm (Ito–Bessyo): manufacturer typical/nominal single values are shown for reference only; standard-range carbon equivalent is not calculated
CET: manufacturer typical/nominal single values are shown for reference only; standard-range carbon equivalent is not calculated

Composition

ElementComposition requirement
CTypical/nominal value 0.2 (not a guaranteed range)
SiTypical/nominal value 0.4 (not a guaranteed range)
MnTypical/nominal value 1.3 (not a guaranteed range)

Applicability and limitations

Ovako 2024 product catalogue, PDF page 44; manufacturer’s typical analysis, for composition reference only. The original header does not explicitly state units; interpreted using the manufacturer’s mass-fraction % information. Neither standard guaranteed values nor measured heat analysis. Excluded from limit-based reverse search and carbon-equivalent calculation; blanks and element names alone in the other-elements field are not filled with 0. Manufacturer code: 2630.

Conditional requirement

Verification notes

All 170 rows of the 2021 original table were visually checked. Values in corresponding 2024 cells are unchanged; recognition differences were reviewed separately. Rows with conflicting values under the same code are excluded; values are not mixed across sections.

Source notes

Also known as Hydax 25. High temperature constructional weldable steel

Other-element requirements

S

20Mn5 · Ovako Product Catalogue CO-117 ENG 24:07 (2024)

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
Bars, tubes, rings and precomponents
Composition basis
Manufacturer typical/nominal values, not guaranteed ranges
Original record status
Manufacturer source verified
Document edition
CO-117 ENG 24:07 ©Ovako 2024
Document title
Ovako Product Catalogue
PDF page references
73
Unit
Interpreted as mass fraction (%) using other documents from the same manufacturer; the unit is not explicitly stated in this table
Analysis type
Typical composition analysis
Manufacturer
Ovako

Source document

Carbon-equivalent reference

Manufacturer typical single values are composition references only; no range estimate is made. They are neither standard guarantees nor measured heat results; Formula applicability requires review against the intended use and process.

IIW / CEV: manufacturer typical/nominal single values are shown for reference only; standard-range carbon equivalent is not calculated
Pcm (Ito–Bessyo): manufacturer typical/nominal single values are shown for reference only; standard-range carbon equivalent is not calculated
CET: manufacturer typical/nominal single values are shown for reference only; standard-range carbon equivalent is not calculated

Composition

ElementComposition requirement
CTypical/nominal value 0.2 (not a guaranteed range)
SiTypical/nominal value 0.4 (not a guaranteed range)
MnTypical/nominal value 1.3 (not a guaranteed range)

Applicability and limitations

Ovako 2024 product catalogue, PDF page 73; manufacturer’s typical analysis, for composition reference only. The original header does not explicitly state units; interpreted using the manufacturer’s mass-fraction % information. Neither standard guaranteed values nor measured heat analysis. Excluded from limit-based reverse search and carbon-equivalent calculation; blanks and element names alone in the other-elements field are not filled with 0. Manufacturer code: 2630.

Conditional requirement

Verification notes

All 170 rows of the 2021 original table were visually checked. Values in corresponding 2024 cells are unchanged; recognition differences were reviewed separately. Rows with conflicting values under the same code are excluded; values are not mixed across sections.

Source notes

Also known as Hydax 25. High temperature constitutional weldable steel

Other-element requirements

S
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