S355G7+M S355G8+M High Strength Alloy Steel

S355G7+M S355G8+M High Strength Alloy Steel

Product:S355G7+M S355G8+M High Strength Alloy Steel
Standard:EN
Length:1000-12000mm
Send Inquiry
Chat Now
Description
Technical Parameters

S355G7+M S355G8+M High Strength Alloy Steel


S355G7+M plate is a high-strength structural steel used as a structural component in offshore and marine buildings. According to the European Standard EN 10225, S355G7 refers to a steel with a minimum yield strength of 355 MPa, and the suffix "+M" indicates that it has been heat treated (controlled rolling, normalising/water-cooled quenching) to provide improved weldability and corrosion resistance.


S355G8+M steel plate -40 ℃ impact, fixed offshore frame with welded structural steel, "S" for structural steel, "355" for the lower yield strength of the plate, G8 indicates the relevant number of steel grade characteristics, M is hot rolled or TMCP delivery state. S355G8+M steel plate has excellent mechanical properties, welding properties, process performance, suitable for the manufacture of ocean and offshore oil platforms, terminal equipment and other structural components.

 

 
S355G7+M low alloy steel chemical composition

 

C

Si

Mn

P

S

Cr

Mo

Ni

Al

Cu

N

Nb

Ti

V

Nb+V

0.14

0.15-0.55

1.0-1.65

0.02

0.01

0.25

0.08

0.5

0.015-0.055

0.3

0.01

0.04

0.025

0.06

0.06

 

 
S355G8+M high strength low alloy steel chemical composition

 

Grade C Si Mn P S Ni Cr Mo Cu
S355G8+M ≤0.14 0.15-0.55 1-1.65 ≤0.02 ≤0.007 ≤0.5 ≤0.25 ≤0.08 ≤0.3
Nb V Ti Alt N B Ca Pb Ceq Max Pcm Max
≤0.04 ≤0.06 ≤0.025 0.015-0.055 ≤0.010 ≤0.0005 ≤0.005 ≤0.010 ≤0.43 ≤0.24

 

 
S355G7+M high strength low alloy hSLA steel mechanical property

 

Grade

Mechanical Properties (min) unless stated

Tensile Strength

Yield Strength

Elongation
A

Thickness (mm)

Thickness t - mm

≤100

>100

≤16

16<t≤25

25<t≤40

40<t≤63

63<t≤100

100<t≤150

%

S355G7+M

470/630

355

355

345

335

325

22

 

 
S355G8+M high strength steel mechanical property

 


Grade
Tensile strength Mpa

Lower yield strength of corresponding thickness (mm), MPa

Elongation A%

Impact energy

Thk≤100mm ≤16 16-25 25-40 40-63 63-100 Temperature ℃ Energy J
S355G8+M 470-630 355 355 345 335 325 22 -40 50

 

 
high strength low alloy steel plate Products image

 

China high tensile steel sheet Manufacturers

 

 
GNEE group team photo

 

China high tensile alloy steel Suppliers

 

 
GNEE group customer visit

 

China high strength structural steel Manufacturers

 

 
GNEE Group participates in Vietnam exhibition

 

China high strength sheet metal Manufacturers

We guarantee the quality and quantity of S355G7+M S355G8+M High Strength Alloy Steel. If you would like more information, please contact us!

 

Hot Tags: s355g7+m s355g8+m high strength alloy steel, China s355g7+m s355g8+m high strength alloy steel manufacturers, suppliers, factory, S420N S420NL High Strength Low Alloy Plates, S500Q S550Q High Strength Sheet Metal, S355G9 M S355G10 M HSLA Steel Plate, High Tensile Steel Plate, high tensile steel sheet, S355 Round Bar