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    Ship Plate and Offshore Engineering Plate

    With the recovery of world shipbuilding industry and the increased proportion of output for high technology and high added - value ships, China will enter into the list of world powerful shipbuilding countries, and East China region is a major shipbuilding and ship repairing base in our country, the annual market demand is big.

    1. Detailed information

    Specification, grade and delivery state

    Standard

    Grade

    Product sizemm

    Delivery state

    Norms of classification societies and GB712

    A,B,D,E,A32,A36,D32,D36,E32,E36
    above grade including direction Z

    680×16003250

    AR,CR,TMCP,N

    Norms of classification societies and GB712

    A40,D40,E40,F32,F36,F40

    640×16003250

    TMCP

    Norms of classification societies and GB712

    A/D/E/F420(Z25,Z35,A/D/E/F 460(Z25,Z35,A/D/E/F 500(Z25,Z35,A/D/E/F 550(Z25,Z35

    660×16003250

    TMCP,QT

    API 2W, API 2H, API 2Y

    API 2W-50(Z, API 2W-60(Z,API 2H-42(Z, API 2H-50(Z,API 2Y-50(Z, API 2Y-60(Z

    680×16003250

    TMCP,N,QT

    2. Composition Wt %
    composition of normal strength steel (smelting composition)

    Class

    C

    Si

    Mn

    P

    S

    ALs

    A

    ≤0.21

    ≤0.50

    ≥2.5C

    ≤0.035

    ≤0.035

    B

    ≤0.21

    ≤0.35

    0.80~1.20

    ≤0.035

    ≤0.035

    D

    ≤0.21

    ≤0.35

    0.60~1.20

    ≤0.035

    ≤0.035

    ≥0.015

    E

    ≤0.18

    ≤0.35

    0.70~1.20

    ≤0.035

    ≤0.035

    ≥0.015

     composition of high strength steel (smelting composition)

    Class

    C

    Si

    Mn

    S

    P

    Al

    Nb

    V

    Ti

    Cu

    Cr

    Ni

    Mo

    N

    A32 A36 A40 D32 D36 D40 E32 E36 E40

    ≤0.18

    ≤0.50.

    0.90~1.60

    ≤0.035

    ≤0.035

    ≥0.015

    0.02~0.05

    0.05~0.10

    ≤0.02

    ≤0.35

    ≤0.20

    ≤0.40

    ≤0.08

    F32 F36 F40

    ≤0.16

    ≤0.50

    0.90~1.60

    ≤0.025

    ≤0.025

    ≥0.015

    0.02~0.05

    0.05~0.10

    ≤0.02

    ≤0.35

    ≤0.20

    ≤0.8

    ≤0.08

    ≤0.009(≤0.012 in case of including Al)

     composition of super high strength steel (smelting composition)

    Class

    C

    Si

    Mn

    P

    S

    N

    AH420-690

    ≤0.21

    ≤0.55

    ≤1.70

    ≤0.030

    ≤0.030

    ≤0.020

    DH420-690

    ≤0.20

    ≤0.55

    ≤1.70

    ≤0.025

    ≤0.025

    EH420-690

    ≤0.20

    ≤0.55

    ≤1.70

    ≤0.025

    ≤0.025

    FH420-690

    ≤0.18

    ≤0.55

    ≤1.60

    ≤0.020

    ≤0.020

     composition of API 2W/2H/2Y (smelting composition)

    Class

    C

    Si

    Mn

    S

    P

    Al

    Nb

    Ti

    Cu

    Cr

    Ni

    Mo

    API 2W-50,API 2W-60

    ≤0.16

    0.05~0.50

    1.15~1.60

    ≤0.010

    ≤ 0.030

    ≥0.015

    ≤0.03

    ≤0.02

    ≤0.35

    ≤0.25

    ≤0.75

    ≤0.08

    API 2H-42

    ≤0.18

    0.05~0.40

    0.90~1.35

    ≤0.010

    ≤ 0.030

    ≥0.015

    ≤0.04

    ≤0.02

    ≤0.35

    ≤0.25

    ≤0.75

    ≤0.08

    API 2W-50

    ≤0.18

    0.05~0.40

    1.15~1.60

    ≤0.010

    ≤ 0.030

    ≥0.015

    ≤0.04

    ≤0.02

    ≤0.35

    ≤0.25

    ≤0.75

    ≤0.08

    API 2Y-50,API 2Y-60

    ≤0.12

    0.05~0.50

    1.15~1.60

    ≤0.010

    ≤ 0.030

    ≥0.015

    ≤0.03

    ≤0.02

    ≤0.35

    ≤0.25

    ≤0.75

    ≤0.08


    3. Performance figures
    Mechanical properties for normal strength steel and high strength steel

    Class

    High  yield strength ReH/MPa

    Tensile strength

    Elongation ratio after fracture A

    Test temperature 

    Impact energy AkvJ

    Thicknessmm

    Rm/ MPa

    %

    ≤50

    50~70

    70~100

    Longitudinal

    Transverse

    Longitudinal

    Transverse

    Longitudinal

    Transverse

    A

    ≥235

    400~520

    ≥22

    20

    ≥34

    ≥24

    ≥41

    ≥27

    B

    0

    ≥27

    ≥20

    D

    -20

    E

    -40

    A32

    ≥315

    440~570

    0

    ≥31

    ≥22

    ≥38

    ≥26

    ≥46

    ≥31

    D32

    -20

    E32

    -40

    F32

    -60

    A36

    ≥355

    490~630

    ≥21

    0

    ≥34

    ≥24

    ≥41

    ≥27

    ≥50

    ≥34

    D36

    -20

    E36

    -40

    F36

    -60

    A40

    ≥390

    510~660

    ≥20

    0

    ≥41

    ≥27

    D40

    -20

    E40

    -40

    F40

    -60

      Mechanical property for super high strength steel

    Class

    High yield strength ReH/MPa

    Tensile strength

    Elongation ratio after fracture

    Test temperature /

    Impact energy AkvJ

    Rm/ MPa

    A/%

    Longitudinal

    Transverse

    AH-FH420

    ≥420

    530-680

    ≥18

    0 to -60

    ≥42

    ≥28

    AH-FH460

    ≥460

    570-720

    ≥17

    0 to -60

    ≥46

    ≥31

    AH-FH500

    ≥500

    610-770

    ≥16

    0 to -60

    ≥50

    ≥33

    AH-FH550

    ≥550

    670-830

    ≥16

    0 to -60

    ≥55

    ≥37

    AH-FH620

    ≥620

    720-890

    ≥15

    0 to -60

    ≥62

    ≥41

    AH-FH690

    ≥690

    770-940

    ≥14

    0 to -60

    ≥69

    ≥46

    Temperature for impact testA:0, D:-20, E:-40, F:-60

      Mechanical property of API 2W/2Y

    Grade class

    Tensile test

    V-notch impact test

    Low yield strength

    Tensile strength

    Elongation ratio after fracture

    Temperature

    Impact energy KV2J

    transversenot less than

    ReLMPa

    RmMPa

    A%

    ≤25mm

    25mm

    50 mm

    200mm

    50

    345-517

    345-483

    ≥448

    ≥23

    ≥18

    -40

    41individual value not less than 34J

    60

    414-621

    414-586

    ≥517

    ≥22

    ≥16

    -40

    48individual value not less than 41J

      Mechanical property of API 2H

    Grade class

    Tensile test

    V-notch impact test

    Low yield strength

    Tensile strength

    Elongation ratio after fracture

    Temperature

    Impact energy KV2J

    transversenot less than

    ReLMPa

    RmMPa

    A,%

    ≤25mm

    25mm

    50 mm

    200mm

    42

    ≥289

    ≥289

    427-565

    ≥22

    ≥18

    -40

    34individual value not less than 27J

    50

    ≥345

    ≥324

    483-620

    ≥21

    ≥16

    -40

    41individual value not less than 34J




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