EN10225 S420G1+M Steel

EN 10225 S420G1+M offshore steel plate is mainly used in steel structures.This steel standard specification S420 includes four different steel grades S420G1+QT,S420G1+M,S420G2+QT and S420G2+M.They have owned different chemical composition and mechanical property. Offshore steel plate S420G1+M owned the minimum yield strength at 420Mpa,and the tensile strength shall be above 500 Mpa.TMCP heat treatment is necessary for steel plate S420G1+M for any thickness when rolling.

EN10225 S420G1+M Steel Chemical Composition   

Grade

Chemical Composition

S420G1+M

The Element Max (%)

C

Si

Mn

P

S

Nb

V

Ti

Al

Cr

Ni

Mo

Cu

N

0.14

0.15 | 0.55

1.65

0.020

0.010

0.040

0.080

0.025

0.015 | 0.055

0.25

0.70

0.25

0.30

0.010

EN10225 S420G1+ M Steel Mechanical Property

Grade	Mechanical Property
S420G1+M	Yield Strength mm Min(Mpa)		Tensile Strength mm Min(Mpa)					Elongation Min,%
	≤ 40	＞ 40 ≤ 100	≤16	＞ 16 ≤ 40	＞ 40 ≤ 63	＞ 63 ≤ 80	＞ 80 ≤ 100	19
	500-660	480-640	420	400	390	380	380

EN10225 S420G1+M steel plates for offshore structures, designed to operate in the offshore sector but not to steels supplied for the fabrication of subsea pipelines, risers, process equipment, process piping, and other utilities.