S420G1+Q/+M

S420G1 is an offshore structural grade steel. The material can be delivered as quenched (Q) or thermo-mechanically rolled (M). We supply the material in accordance with EN10225:2001.
S420G1 has good yield and tensile strength and is used in the construction of offshore platforms and oil rigs. Masteel UK Limited specialise in the supply of offshore steel products to the global oil and gas industry.
Please refer to the technical information for S420G1+M and S450G1+Q below.

Mechanical Properties of S420G1+Q/+M

GradeMechanical Properties (min) unless sated     Tensile Strength Rm MPa 
Tensile StrengthNominal Thickness (mm)
Thickness (mm)Elongation A
< 40>40 <100<16>16 <40>40 <63>63 <80>80 <100%
S420G1+M500/660480/64042040039038038019
S420G1+Q500/660480/64042040039038038019

Chemical Composition of S420G1+Q/+M

 %
C0.14
Si0.15/0.55
Mn1.65
P0.02
S0.01
Cr0.25
Mo0.25
Ni0.7
Al0.015/0.055
Cu0.3
N0.01
Nb0.04
Ti0.025
V0.08
Nb+V0.09