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Pressure Vessel

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DescriptionYield StrengthJ-FactorHIC Test StandardsSupplementary RequirementPressure Vessel 9% Ni Steel
SpecificationGradeProd Thick (mm)Mechanical PropertiesApplicationRemark
Thick Range (mm) Tensile TestBend TestImpact Test
YS min (N/mm2)UTS (mm)E min (%) Averagre Temp. (Joule)
 ASTM A-283
ASME SA-283
 B 6 – 50 185 345 – 45025 (200mm) – For Pressure Vessel Plate Carbon Steel Low and Intermediate Tensile StrengthFor thickness below than 8mm, max width is 1,5424mm (5′); above than 8mm, max width is 3,048mm (10′).
For thickness more than 80mm can be supplied without mill certificate.
Max. length is 15,000mm. However, the final size are subject to reconfirm by mill.
Shotblasting and primer shop are available, with max. width 3,048mm(10′).
28 (50mm)
 C 6 – 40 205 380 – 51522 (200mm) –
25 (50mm)
D6 – 15 230415 – 55020 (200mm)
23 (50mm)
 ASTM A-283
ASME SA-283
 A6 – 50 – 165 310 – 45027 (200mm) –For Pressure Vessel Plate Carbon Steel Low and Intermediate Tensile Strength
30 (50mm)
 B 6 – 50 – 185 345 – 48525 (200mm)
28 (50mm)
C 6 – 50 – 205 380 – 51523 (200mm) – –
27 (50mm)
 ASTM A-283
ASME SA-283
 60 12.5 – 220 415 – 55021 (200mm) – – For Pressure Vessel Plate Carbon Steel Low and Intermediate Tensile Strength
25 (50mm)
65 up to 40 – 240 450 – 58519 (200mm) – –
23 (50mm)
70 up to 80 – 260 485 – 62017 (200mm) – –
21 (50mm)

 

Steel GradesChemical CompositionThickness(mm)CLRAdditional Service
 PSCeq (G) t ≤ 40t NACE
TM0177
pH ≤ 4.5
 (S) A516-60 ≤ 0.01≤ 0.01 ≤ 0.43 ≤ 83 ≤ 5~ 15% SR : 620 ± 20 C, 3Hr/inch
Impact Energy : 27J/24J at -46C
 (S) A516-65
 (S) A516-70

*Supply by POSCO

GradesRequirement
 ASMEASTMJIS
 YS 220 SA516-60 (T ≤ 100t) A15-60 (T ≤ 100t) JS-SB410 (T ≤ 93t)
 SA387-22-C1 (T ≤ 65t) A387-22-C1 (T ≤ 65t)
 YS 240 SA516-65 (T ≤ 100t)A516-65 (T ≤ 100t) JS-SB450 (T ≤ 93t)

JS-SB450M (T ≤ 90t)

 SA387-11-C1 (T ≤ 65t)A387-11-C1 (T ≤ 65t)
 SA387-12-C1 (T ≤ 65t)A387-12-C1 (T ≤ 65t)
 YS 260 SA516-70 (T ≤ 100t)A516-70 (T ≤ 100t) JS-SB480 (T ≤ 60t)
 SA387-12-C1 (T ≤ 65t)SA387-12-C1 (T ≤ 65t) JS-SB410M (T ≤ 70t)
 YS 310 SA387-11-C2 (T ≤ 65t)A387-11-C2 (T ≤ 65t) –
 SA387-22-C2 (T ≤ 65t) AA387-22-C2 (T ≤ 65t)
 YS 345 SA537 Class 1 (T ≤ 83t)A537 Class 1 (T ≤ 83t) JS-SLA365 (T ≤ 38t)
 – –JS-SLA365TM (T ≤ 38t)
 YS 415 SA537 Class 2 (T ≤83t)A537 Class 2 (T ≤83t) –
 YS 450~ – – JS-SPV 450 (T ≤ 70t)
 – – JS-SPV 490 (T ≤ 70t)

YS = Yield Strength
*Supply by POSCO

 Steel Grades ElementsMechanical propertiesThickness (Max mm)Additional Service
 YS (MPa, Min) TS (MPa)
 (S) A516 – 60 C, Ni, Nb, V, … 220 415 ~ 550 100Ceq 0.43 %
SR  6 ~ 15hrs
Impact Test at -45 ~ -49 C
 (S) A516 – 65 240 450 ~ 585100
 (S) A516 – 70260 485 ~ 620100
 (S) A537 – 1355  485 ~ 62083SR 3 ~ 7 hrs
Impact Test at -46~ -49 C
 (S) A537 – 2415 550 ~ 69083
 (S) A515 – 60 C, Mn, … 220 415 ~ 55093 SR 3 hrs
 (S) A515 – 65 240 450 ~ 58593
 (S) A515 – 70260 485 ~ 62093
 (S) A387-11-C1 Cr, Mo, Mn, … 240 415 ~ 58565 SR 3 hrs
J-Factor
 (S) A387-11-C2 310515 ~ 690100
 (S) A387-22-C1205415 ~ 58565
 (S) A387-22-C2 310515 ~ 690100
 (S) A299-B Cu, Ni, Cr, Mo325550 ~ 690130SR 9 hrs
 (S) A302-B Ni, Mo345550 ~ 69085

*J-Factor = (Si+Mn)x(P+Sn)x10<sup>4</sup>≤150(Si,Mn,P and Sn in wt%)
*Supply by POSCO

Test StandardsTest SolutionsTerminal pHTest Conditions
NACE TM0284-sBArtificial Seawater8.1 ~ 8.325 C, 96 hrs
NACE TM0177Acid NaCI≤ 4.525 C, 96 hrs

*NACE: National Association of Corrosion Engineers
**HIC Test frequency: per heat on the same thickness plate
*Supply by POSCO

 Supplementary Requirement SA516-60/65/70 SA387-11-C1/C2 SA387-22-C1/C2 SA537-1SA537-2
 S1 : Vacuum degassed 0 00 00
 S2 : Product Analysis00000
 S3 : Simulated PWHT of Test Coupons (1Hr/inch, T > 2 inches each inch plus 15 minutes) 2.5Hr x 33Hr
C2 : 75Hr
3Hr
C2 : 75Hr
 7Hr 3Hr
 S4 : Additional Tension Test Not Required  Not Required  Not Required  Not Required Deviation Need
S5 : CVN Impact Test (-46 C) 0 0 0 0 0
 S7 : High Temperature Tension Tests Reference Data Available  Reference Data Available  Reference Data Available  Reference Data Available  Reference Data Available
 S22 :  Through Thickness Tension Test (A770 or EN 10164) Min 35% Min 35% Min 35% Min 35% Min 35%
 Fine Austentic Grain Size Grain Size Index above “7” – – Grain Size Index above “7” Grain Size Index above “7”
 Low Phosphorus Max 0.01 Max 0.012 Max 0.012 Max 0.012 Max 0.012
 HIC (Total average of 3 specimens) CTR 1.5% CSR  0.5% CLR 5%
Not Required
 Not Required Not Required Not Required

*Supply by POSCO

Material Characteristics
Low temperature toughness : ≥ 70J @ – 196 C
High tensile strength ≥ 690 MPa
Residual magnetization : Flux Density ≤ 50 Gauss

Usage
Liquefield Natural Gas(LNG) Storage Tank

Standard Abbreviation : A553-TY1

Chemical Composition

  CSiMnPSSol-AiCuNi
 Spec ≤0.080.15 ~ 0.40 ≤ 0.90 ≤ 0.008 ≤ 0.0050.005 ~ 0.04 ≤ 0.108.50 ~ 9.30
 Result0.04 ~ 0.080.20 ~ 0.300.60 ~ 0.700.0050.0020.005 ~ 0.0400 ~ 0.108.90 ~ 9.30

 

Mechanical Properties

  Yield StrengthTensile StrengthImpact @ – 196 CCTOD @ – 164 c
 Spec≥585 MPa690 ~ 825 MPa 70 Joules ≤ > 0.17mm
 Result657 MPa707 MPa207 Joules0.28 ~ 1.29mm

*Supply by POSCO

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