Products

Offshore Structure-1

Offshore Structure

Email
Steel Grades 1Steel Grades 2Steel Grades 3
Steel GradesSupplementary RequirementThickness (mm)Chemical CompositionMechanical Properties
 API-2H-50 CTOD
non-guarantee
20 ~ 63tCeq ≤ 0.43
Pcm ≤ 0.27
Tensile TestYS(MPa)345 – 420
TS(MPa)490 – 620
EL(%), GL5023
YR(%)≤ 80
Charpy Test (J) (-40°C, Transverse)≥ 50
 API-2W-50 CTOD
non-guarantee
25 ~ 75tCeq ≤ 0.36
Pcm ≤ 0.27
Tensile TestYS(MPa)345 – 483
TS(MPa)485 – 630
EL(%), GL5023
YR(%)≤ 90
Charpy Test (J) (-40°C, Transverse)≥ 50
 API-2W-60 CTOD
non-guarantee
25 ~ 75tCeq ≤ 0.41
Pcm ≤ 0.20
Tensile TestYS(MPa)414 – 586
TS(MPa)517 – 660
EL(%), GL5022
YR(%)≤ 90
Charpy Test (J) (-40°C, Transverse)≥ 80
 API-2W-50 CTOD
(-10°C)
25 ~ 75tCeq ≤ 0.39
Pcm ≤ 0.19
Tensile TestYS(MPa)345 – 483
TS(MPa)485 – 630
EL(%), GL5023
YR(%)≤ 90
Charpy Test (J) (-40°C, Transverse)≥ 50

Ceq = C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15
Pcm = C+Si/30+(Mn+Cu+Cr)/20+Ni/60+Mo/15+V/10+5B
*Supply by POSCO

Steel GradesSupplementary RequirementThickness (mm)Chemical CompositionMechanical Properties
 API-2W-60CTOD
(-10°C)
25 ~ 75tCeq ≤ 0.42
Pcm ≤ 0.21
Tensile TestYS(MPa)414 – 586
TS(MPa)520 – 665
EL(%), GL5022
YR(%)≤ 90
Charpy Test (J) (-40°C, Transverse)≥ 60
 EN-S355G8+M CTOD
non-guarantee
25 ~ 75tCeq ≤ 0.36
Pcm ≤ 0.19
Tensile TestYS(MPa)345 – 520
TS(MPa)480 – 620
EL(%), GL5022
YR(%)≤ 90
Charpy Test (J) (-40°C, Transverse)≥ 50
 BN-S355ML CTOD
non-guarantee
25 ~ 75tCeq ≤ 0.36
Pcm ≤ 0.19
Tensile TestYS(MPa)345 – 520
TS(MPa)480 – 620
EL(%), GL5022
YR(%)≤ 90
Charpy Test (J) (-40°C, Transverse)≥ 50
 TOTAL S355KT-40 CTOD
non-guarantee
25 ~ 75tCeq ≤ 0.36
Pcm ≤ 0.19
Tensile TestYS(MPa)345 – 520
TS(MPa)485 – 620
EL(%), GL5022
YR(%)≤ 90
Charpy Test (J) (-40°C, Transverse)≥ 60

Ceq = C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15
Pcm = C+Si/30+(Mn+Cu+Cr)/20+Ni/60+Mo/15+V/10+5B
*Supply by POSCO

 Supplementary Requirement  CTOS(-10°C)  Non-CTOD  
 YS355-TMYS420-TM  YS355-TMYS420-TM YS355-N 
S1: UT(ASTM A578 Level C) AvailableAvailableAvailableAvailableAvailable
S2: Impact Test at Low Temp (-60°C) AvailableAvailableAvailableAvailableAvailable
S3: Additional Tension Test AvailableAvailableAvailableAvailableAvailable
S4: Through Thickness TestMin 35%Min 35%Min 35%Min 35%Min 35%
S5: Low Sulfur (Max 0.006%)Max 0.005Max 0.005Max 0.005Max 0.005Max 0.005
S7: Low Nitrogen (max 0.0009%)Max 0.007Max 0.007Max 0.007Max 0.007Max 0.007
S8: Strain-AGed Impact Test (250°C, 1 Hour, Strain: 5%)AvailableAvailableAvailableAvailableAvailable
S9: PWHT (600±20°C, 240 minutes)AvailableAvailableAvailableAvailableAvailable
S11: Pre-Qualification (CTOD)Max 90tMax 100t
S12: Drop-Weight Test (-35°C)AvailableAvailableAvailableAvailable
S91: Fine Austenitic Grain SizeGrain Size Index above “7”(ASTM E112)

*Please made contact with us for details before ordering supplementary equipment
*Supply by POSCO

  • No products in the list
View list