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    Wear Resistant Steel

    High strength low alloy wear-resistant steel is one of high quality special material, which is used in mining machinery, engineering machinery, cement and metallurgy industry. High-performance wear-resistant steel is one of the key programs in the materials field of "twelfth five-year" national science and technology support plan.

    1. Detailed information

      Product overview
    High strength low alloy wear-resistant steel is one of high quality special material, which is used in mining machinery, engineering machinery, cement and metallurgy industry. High-performance wear-resistant steel is one of the key programs in the materials field of "twelfth five-year" national science and technology support plan.

    l  Steel Grade and Size
    Since 2009, the quenching process was adopted for wear resistant steel, the steel grades of wear resistant steel have developed into a series and the size also covered a large range from narrow to wide and from thin to thick.

    The typical steel grade: 
    NM360, NM400, NM450, NM500, NM550, NM600 and NH1250

           Size: 
    thickness, 5-60mm, width,1600-3200mm, length, 6000-24000mm

    Delivery status: 
    quenching + tempering

    Execution standard: 
    technical agreement, enterprise standard Q / 3201 NG215-2013, Chinese standard GB/T24186-2009

    1. Domestic and overseas steel grade

    CHINA

    SSAB

    JFE

    DILLIDUR

    ThyssenKrupp

    Ruukki

    NM360


    EH360




    NM400

    HARDOX400

    EH400

    400V

    XAR400

    Raex400

    NM450

    HARDOX450


    450V

    XAR450

    Raex450

    NM500

    HARDOX500

    EH500

    500V

    XAR500

    Raex500

    NM550

    HARDOX550





    2. Chemical composition and properties
    Chemical composition /wt%


    C

    Si

    Mn

    P

    S

    Cr

    Mo

    B

    N

    H

    Ceq

    NM360/

    NM400

    0.20

    0.40

    1.50

    0.012

    0.005

    0.35

    0.30

    0.002

    0.005

    0.00025

    0.53

    NM450

    0.22

    0.60

    1.50

    0.012

    0.005

    0.80

    0.30

    0.002

    0.005

    0.00025

    0.62

    NM500

    0.30

    0.60

    1.00

    0.012

    0.002

    1.00

    0.30

    0.002

    0.005

    0.0002

    0.65

    NM550

    0.35

    0.40

    1.20

    0.010

    0.002

    1.00

    0.30

    0.002

    0.0045

    0.0002

    0.72

     Property indexes

    Steel Grade

    Yield strength/MPa

    Tensile strength/MPa

    Elongation A50/%

    Brinell hardnessHBW10/3000

    Longitudinal

    impact /J

    -20

    90°cold bend

    NM360

    ≥900

    ≥1050

    ≥12

    320-390

    ≥21

    D≥3a qualified

    NM400

    ≥950

    ≥1200

    ≥12

    380-440

    ≥21

    NM450

    ≥1050

    ≥1250

    ≥7

    420-490

    ≥21

    D≥4.5a qualified

    NM500

    ≥1100

    ≥1350

    ≥6

    ≥470

    ≥17

    D≥6a qualified

    NM550




    ≥530


    Note: 1. Ultra-low temperature and high toughness wear-resistant steel plates can be produced according to customer’s requirements (-40, -60impact energy is greater than 20J)
    2.
     By comparative analysis, the performance of wear-resistant steel plates NM400 produced in NISCO is about three times than Q345E steel. Properties of wear-resistant steel at all levels see tables below.

    Typical size and properties of NM360

    Thickness./mm

    ReL

    /MPa

    Rm /MPa

    A/%

    Surface hardness/ HBW10/3000

    -20impact /J

    single value 1

    single value 2

    single value 3

    average

    single value1

    single value2

    single value3

    average

    20

    1050

    1160

    19.0

    360.0

    356.0

    363.0

    360.0

    70

    58

    68

    65

    25

    1020

    1180

    18.5

    376.0

    380.0

    369.0

    375.0

    62

    40

    54

    52

    30

    1040

    1180

    17.0

    366.0

    372.0

    370.0

    369.0

    71

    63

    60

    65

    40

    1020

    1160

    18.0

    368.0

    374.0

    362.0

    368.0

    67

    66

    70

    68

    Typical size and properties of NM400

    Thickness./mm

    ReL

    /MPa

    Rm /MPa

    A/%

    Surface hardness / HBW10/3000

    -20impact /J

    single value 1

    single value 2

    single value3

    average

    single value 1

    single value 2

    single value 3

    average

    20

    1100

    1350

    17.0

    416.0

    411.0

    408.0

    412.0

    47

    41

    53

    47

    30

    1060

    1360

    16.5

    406.0

    400.0

    390.0

    399.0

    48

    44

    42

    45

    32

    1080

    1370

    15.5

    393.0

    402.0

    418.0

    404.0

    39

    39

    41

    40

    35

    1090

    1330

    16.5

    412.0

    415.0

    410.0

    412.0

    46

    40

    42

    43

    40

    1230

    1400

    15.0

    402.0

    389.0

    411.0

    401.0

    38

    45

    38

    40

    50

    1130

    1410

    15.0

    401.0

    412.0

    396.0

    403.0

    44

    46

    39

    43

    Typical size and properties of NM450

    Thickness./mm

    ReL

    /MPa

    Rm /MPa

    A/%

    Surface hardness / HBW10/3000

    -20impact /J

    single value 1

    single value 2

    single value3

    average

    single value 1

    single value 2

    single value 3

    average

    8

    1250

    1460

    16

    444

    447

    443

    445

    42

    38

    41

    40

    12

    1290

    1470

    17

    461

    461

    462

    462

    43

    46

    42

    43

    20

    1370

    1450

    17

    472

    470

    478

    473

    42

    40

    43

    42

    25

    1230

    1480

    16.5

    467

    463

    465

    465

    45

    42

    41

    43


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