22 MNB4

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22 MnB4 · 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 10263-3:2017
Table / clause: Table 3

Carbon-equivalent reference

IIW / CEV：0.3500–0.4567Known-element contribution; incomplete value; missing Cr, Mo, 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）：0.2490–0.3475Known-element contribution; incomplete value; missing Cr, Ni, Mo, V 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：0.2900–0.3725Known-element contribution; incomplete value; missing Mo, Cr, 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	0.2 ～ 0.24
Si	≤ 0.3 (lower limit not stated)
Mn	0.9 ～ 1.2
P	≤ 0.025 (lower limit not stated)
S	≤ 0.025 (lower limit not stated)
B	0.0008 ～ 0.005
Cu	≤ 0.25 (lower limit not stated)

Applicability and limitations

BS EN 10263-3:2017; 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 10263-3:2017 · Table 3View associated products →