Grade 355N - comparison of tensile strength, yield strength and toughness

  BS7191 EN 10225 / NORSOK API 2H Shipbuilding rules
LR / GL / NV etc.
 
355 N 355EM / EMZ S355G2+N S355G3+N S355G7+N
S355G8+N
S355G9+N
S355G10+N
 		 API 2H-50 e. g. E 36 / EH 36
Thick. [mm]

Tensile strength Rm [MPa]
≤25 460 – 620 470 – 630 470 – 630 470 – 630 483 – 620 90 – 620
> 25 ≤40 " " " " " "
> 40 ≤100 '' - '' '' '' ''
> 100 ≤150 '' - - '' '' ''
Thick. [mm]

 Yield Strength ReH [MPa]
≤16  ≥355  ≥355  ≥355  ≥355  ≥355*)  ≥355
> 16 ≤20 '' ≥345 ≥345 '' '' ''
> 20 ≤25 '' '' '' '' '' ''
> 25 ≤40 ≥345 - '' ≥345 '' ''
> 40 ≤63  ≥340 - -  ≥335 '' ''
> 63 ≤80 ≥325 - - ≥325 ≥325*) ''
> 80 ≤100 ≥325 - - '' '' ''
> 100 ≤120 ≥315 - - '' '' ''
> 120 ≤150 ≥305 - -  ≥320 '' ''

*)Rp0.2

 

  BS7191 EN 10225 / NORSOK API 2H Shipbuilding rules
LR / GL / NV

355 N 355EM / EMZ S355G2+N S355G3+N S355G7+N
S355G8+N
S355G9+N
S355G10+N
 		 API 2H-50 e. g. E 36 / EH 36
  Minimum Impact Energy Av [Joule] - transverse (average/single) - at a test temperature of
-40 oC -40 oC -40 oC -40 oC -40 oC -40 oC
Surface
All thickness
< 40 mm
< 50 mm		 50 / 35
-
-		 50 / 35
-
-		 50 / 35
-
-		 50 / 35
-
-		 -
41/34
-		 -
-
24/17
Quarter thick.
>40
> 50 < 70
> 70 < 150		 -
-
-		 _
_
_		 -
-
-

-
-
-

 41/34
-
-		 -
27 /19
34 / 24
Mid-thickness
All thicknesses
> 40 mm		 -
50 / 35		 -
-		 -
-		 -
50 / 35		 -
-		 -
-