Russia · GOST

10H2M

GOST 5520:1979 — GOST 5520

Chemical composition

Element	min	max	Similar	Remarks
As		0.08
C	0.08	0.12
Cr	2	2.5
Cu		0.2
Mn	0.4	0.7
Mo	0.6	0.8
N		0.008	In EAF steels it is permitted N=max 0.012%.	In EAF steels it is permitted N=max 0.012%.
Ni		0.3
P		0.02
S		0.02
Si	0.17	0.37

Heat treatment / condition	Yield strength	Tensile strength	Elongation	Reduction of area	Impact energy	Hardness
sheet, not heat treated, > 50 <= 100 mm	≥295	450–590	≥20		≥98 KCU
sheet, not heat treated, > 8 <= 50 mm	≥295	390–590	≥20		≥98 KCU

Yield strength Rp0.2 (MPa)

Temperature ℃	Time h	Rp1	CRS
470	10000.0h	204.0	242.0
470	100000.0h	117.0	168.0
470	200000.0h		149.0
480	10000.0h	184.0	106.0
480	100000.0h	106.0	149.0
480	200000.0h		132.0
490	10000.0h	165.0	97.0
490	100000.0h	97.0	132.0
490	200000.0h		116.0
500	10000.0h	147.0	87.0
500	100000.0h	87.0	118.0
500	200000.0h		102.0
510	10000.0h	128.0	78.0
510	100000.0h	78.0	105.0
510	200000.0h		91.0
520	10000.0h	112.0	70.0
520	100000.0h	70.0	93.0
520	200000.0h		80.0
530	10000.0h	97.0	62.0
530	100000.0h	62.0	82.0
530	200000.0h		71.0
540	10000.0h	83.0	54.0
540	100000.0h	54.0	73.0
540	200000.0h		62.0
550	10000.0h	71.0	46.0
550	100000.0h	46.0	63.0
550	200000.0h		53.0
560	10000.0h	61.0	40.0
560	100000.0h	40.0	53.0
560	200000.0h		45.0
570	10000.0h	53.0	34.0
570	100000.0h	34.0	46.0
570	200000.0h		38.0