Products

Offshore Structure-1

Offshore Structure

Email
Steel Grades 1Steel Grades 2Steel Grades 3
Steel Grades Supplementary Requirement Thickness (mm) Chemical Composition Mechanical Properties
 API-2H-50  CTOD
non-guarantee
20 ~ 63t Ceq ≤ 0.43
Pcm ≤ 0.27
Tensile Test YS(MPa) 345 – 420
TS(MPa) 490 – 620
EL(%), GL50 23
YR(%) ≤ 80
Charpy Test (J) (-40°C, Transverse) ≥ 50
 API-2W-50  CTOD
non-guarantee
25 ~ 75t Ceq ≤ 0.36
Pcm ≤ 0.27
Tensile Test YS(MPa) 345 – 483
TS(MPa) 485 – 630
EL(%), GL50 23
YR(%) ≤ 90
Charpy Test (J) (-40°C, Transverse) ≥ 50
 API-2W-60  CTOD
non-guarantee
25 ~ 75t Ceq ≤ 0.41
Pcm ≤ 0.20
Tensile Test YS(MPa) 414 – 586
TS(MPa) 517 – 660
EL(%), GL50 22
YR(%) ≤ 90
Charpy Test (J) (-40°C, Transverse) ≥ 80
 API-2W-50  CTOD
(-10°C)
25 ~ 75t Ceq ≤ 0.39
Pcm ≤ 0.19
Tensile Test YS(MPa) 345 – 483
TS(MPa) 485 – 630
EL(%), GL50 23
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 Grades Supplementary Requirement Thickness (mm) Chemical Composition Mechanical Properties
 API-2W-60 CTOD
(-10°C)
25 ~ 75t Ceq ≤ 0.42
Pcm ≤ 0.21
Tensile Test YS(MPa) 414 – 586
TS(MPa) 520 – 665
EL(%), GL50 22
YR(%) ≤ 90
Charpy Test (J) (-40°C, Transverse) ≥ 60
 EN-S355G8+M  CTOD
non-guarantee
25 ~ 75t Ceq ≤ 0.36
Pcm ≤ 0.19
Tensile Test YS(MPa) 345 – 520
TS(MPa) 480 – 620
EL(%), GL50 22
YR(%) ≤ 90
Charpy Test (J) (-40°C, Transverse) ≥ 50
 BN-S355ML  CTOD
non-guarantee
25 ~ 75t Ceq ≤ 0.36
Pcm ≤ 0.19
Tensile Test YS(MPa) 345 – 520
TS(MPa) 480 – 620
EL(%), GL50 22
YR(%) ≤ 90
Charpy Test (J) (-40°C, Transverse) ≥ 50
 TOTAL S355KT-40  CTOD
non-guarantee
25 ~ 75t Ceq ≤ 0.36
Pcm ≤ 0.19
Tensile Test YS(MPa) 345 – 520
TS(MPa) 485 – 620
EL(%), GL50 22
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-TM YS420-TM   YS355-TM YS420-TM  YS355-N 
S1: UT(ASTM A578 Level C)  Available Available Available Available Available
S2: Impact Test at Low Temp (-60°C)  Available Available Available Available Available
S3: Additional Tension Test  Available Available Available Available Available
S4: Through Thickness Test Min 35% Min 35% Min 35% Min 35% Min 35%
S5: Low Sulfur (Max 0.006%) Max 0.005 Max 0.005 Max 0.005 Max 0.005 Max 0.005
S7: Low Nitrogen (max 0.0009%) Max 0.007 Max 0.007 Max 0.007 Max 0.007 Max 0.007
S8: Strain-AGed Impact Test (250°C, 1 Hour, Strain: 5%) Available Available Available Available Available
S9: PWHT (600±20°C, 240 minutes) Available Available Available Available Available
S11: Pre-Qualification (CTOD) Max 90t Max 100t
S12: Drop-Weight Test (-35°C) Available Available Available Available
S91: Fine Austenitic Grain Size Grain 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