Russia · GOST

10G2S1

GOST 5520:1979 — GOST 5520

Chemical composition

Element	min	max	Similar	Remarks
As		0.08
C		0.12
Cr		0.3
Cu		0.3
Mn	1.3	1.65
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		0.035
S		0.04
Si	0.8	1.1

Mechanical properties

Heat treatment / condition	Yield strength	Tensile strength	Elongation	Reduction of area	Impact energy	Hardness
sheet, aged , > 10 <= 20 mm	≥335	≥480	≥21		≥29 KCU
sheet, aged , > 20 <= 32 mm	≥335	≥470	≥21		≥29 KCU
sheet, aged , > 32 <= 60 mm	≥325	≥450	≥21		≥29 KCU
sheet, aged , > 5 <= 10 mm	≥345	≥490	≥21		≥29 KCU
sheet, aged , > 60 <= 80 mm	≥295	≥430	≥21		≥29 KCU
sheet, aged , > 80 <= 100 mm	≥295	≥430	≥21		≥29 KCU
sheet, not heat treated, <= 5 mm	≥355	≥490	≥21
sheet, not heat treated, > 10 <= 20 mm	≥335	≥480	≥21		≥59 KCU
sheet, not heat treated, > 20 <= 32 mm	≥335	≥470	≥21		≥59 KCU
sheet, not heat treated, > 32 <= 60 mm	≥325	≥450	≥21		≥59 KCU
sheet, not heat treated, > 5 <= 10 mm	≥345	≥490	≥21		≥64 KCU
sheet, not heat treated, > 60 <= 80 mm	≥295	≥430	≥21		≥59 KCU
sheet, not heat treated, > 80 <= 100 mm	≥295	≥430	≥21		≥59 KCU

High/low temperature

Yield strength Rp0.2 (MPa)

Condition	Temperature ℃	Approx.
sheets heat treated	400	176
sheets heat treated	350	196
sheets heat treated	300	216
sheets heat treated	250	245