Steel 12Х2МФСР

Designation

Name	The value
Designation GOST Cyrillic	12Х2МФСР
Designation GOST Latin	12X2MFCP
Transliteration	12H2MFSR
By chemical elements	12Cr2MoVСB

Description

12Х2МФСР steel is used: for the manufacture of billets intended for the manufacture of seamless cold, warm, hot-wrought, including hot-pressed and hot-pressed reduced pipes for steam boilers and pipelines, installations with high and supercritical steam parameters and long time operation at temperatures up to +620 °C.

Standards

Name	Code	Standards
Bars and shapes	В32	TU 14-1-1529-2003
Blanks. Of the workpiece. Slabs	В31	TU 14-1-4992-91
Steel pipes and fittings to them	В62	TU 14-3-463-2005, TU 14-3-460-2009, TU 14-3Р-55-2001, TU 14-3-460-2003

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	V	B	Mo
TU 14-3-460-2003	0.08-0.15	≤0.025	≤0.025	0.4-0.7	1.6-1.9	0.4-0.7	≤0.25	Rest	≤0.25	0.2-0.35	0.002-0.005	0.5-0.7

Fe is the basis.
According to TU 14-3R-55-2001, TU 14-1-1529-2003 and TU 14-3-460-2003 for steel made by scrap-process or from cuprous ores, the mass fraction of residual copper and nickel is allowed up to 0.30 % of each. A technological addition of rare earth elements is allowed to improve the quality of the metal.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %
Tubular billet + hot deformed Tubes (DH=57-465 mm) TU 14-3-460-2003. Normalization at 970-1000 °C, air cooling + Vacation at 750-780 °C (aged for at least 2 hours), air cooling
20-25	≥275	490-690	≥21
Seamless pipes for steam boilers and pipelines according to TU 14-3P-55-2001. Normalization at 970-1000 °C + Vacation at 750-780 (aged for at least 2 hours), air cooling
	≥206	-	-
	≥195	-	-
-	≥274	≥470	≥21

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture