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42CRMOS 4

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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42CrMoS 4 · DIN EN 10263-4-2002

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 10263-4-2002
Table / clause
Table 2

Carbon-equivalent reference

IIW / CEV:0.6900–0.9167Known-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):0.4650–0.5975Known-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:0.5000–0.6425Known-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

ElementComposition requirement
C0.38 ~ 0.45
Si≤ 0.3 (lower limit not stated)
Mn0.6 ~ 0.9
P≤ 0.025 (lower limit not stated)
S0.02 ~ 0.04
Cu≤ 0.25 (lower limit not stated)
Cr0.9 ~ 1.2
Mo0.15 ~ 0.3

Applicability and limitations

The original webpage states DIN EN 10263-4-2018; The composition in this record was actually verified against DIN EN 10263-4-2002; the edition is now identified as 2002 according to the original evidence; The original official German edition of 2018 remains unavailable; edition EN2017 is not automatically treated as the original DIN. ; DIN EN10263-4:2002-02 adopts EN10263-4:2001; the edition relationship is expressly identified on the cover; Heat-analysis mass percentages. ; Historical Table 2/3 contains no optional Al addition note for 2017; newer-edition conditions are not applied. ; Table 2, note c permits an agreed carbon range of width .04%; tabulated defaults are unchanged without a specific agreement. ; Table 2, note d and Table 3, note c permit agreed lower Si, considering effects on properties/hardenability; no range is invented where none is specified. ; Unlisted elements are not entered as zero; Table 2, note a: intentional additions without purchaser consent are prohibited except to finish the heat; residuals may be present but must not impair properties. ; Table 2, note b permits specified deviations where hardenability is required, except for P/S; The default composition range is not widened here. ; Mechanical properties, delivery and hardenability require separate verification; suitability for forming a specific component requires separate confirmation.

Verification notes

The original webpage states DIN EN 10263-4-2018; The composition in this record was actually verified against DIN EN 10263-4-2002; the edition is now identified as 2002 according to the original evidence; The original official German edition of 2018 remains unavailable; edition EN2017 is not automatically treated as the original DIN.
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