• Alloy Carburizing Steel SA302 GRADE D
  •  Alloy Carburizing Steel SA302 GRADE D


    1. Use

    Alloy carburizing steel is mainly used in the manufacture of transmission gear of automobiles and tractors, camshaft of internal combustion engine, the piston pin and other machine parts. These parts usually suffer intense friction, wear and great alternating load, especially the impact loads.


    2. Performance Requirements

    (1) Surface carburized layer is of high hardness, to ensure excellent wear resistance and the contact fatigue resistance, with adequate ductility and toughness.

    (2) Central portion is with high toughness and sufficiently high intensity. Insufficient core toughness may easily broken under impact load or loads; insufficient strength will make brittle carburized layer easily broken and peel off.

    (3) With good heat treatment process performance at high carburizing temperature (900 ~ 950 ), the austenite grain is not easy to grow up and have a good hardenability.


    Unitedsteel Bolier Plate Factory are specialized in producing and exporting ASME SA302/SA302M SA302 GRADE D NACE MR0175, MR0103 Boiler steel plate, Low alloy and high strength steel plate,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  heavy plate and wide, heavy plate, Which is a large steel plate supplier mill at Unitedsteel Group.


    1.       SA302 GRADE D Adopt standard: SA302/SA302M  Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel

    2.       SA302 GRADE D Specification:  Thickness: 1mm to 100mm; Width: 1500mm to 3500mm: Length: 3000mm to 27000mm

    3.       Third Party Inspection for SA302 GRADE D: ABS, DNV, BV, GL, CCS, LR, RINA, KR, NK, CE, SGS, IKE, IEI or other quality department.

    4.       SA302 GRADE D Chemical composition % of the Product analysis of grade  










    SA302 GRADE D


























    5.       SA302 GRADE D Mechanical Property



    Min Yield



    Min Impact Energy

    SA302 GRADE D


    345 Mpa

    550-690 Mpa

    20 %




    345 Mpa

    550-690 Mpa

    17 %




    UNITEDSTEEL also could supply super thick steel plate from 100mm to 300mm, certified by TUV, SGS, CE and nine classification societies: ABS, DNV, LR, GL, BV, KR, RINA, CCS, NK. 

    At competitive price, better quality, faster delivery and better service in supply steel plate in China


    UNITEDSTEEL has a strong relationship with our mill. We can supply ASME SA302 GRADE D steel material directly at our mill ex-factory prices. Each plate has the Mill Certificate Test EN 10204 3.1/3.2 Version.


    6.       SA302 GRADE D Delivery Time Or Lead Time: 15-30days

    7.       SA302 GRADE D Extra Service: Pretreatment (Shot Blasting, Sand Blast, Painting and Galvanized), Cutting Parts, Sample Service, Third Party inspection, UT Test and Size inspection.

    8.       If you have any requirement in steel plate for SA302 GRADE D, whether the new plate or stock list of material, please feel free to contact us by email of calling.

    9.       If you had any question at our plate or service. Please contact our after service department to get faster reply.

    Unitedsteel Group Company Principle


    More Cheaper Price,

    More Faster Delivery,  

    The Best Company Prestige,

    The Best After sales service,

    The One step Steel material Solution

    The Best Professional quality control system

    Supplementary Requirements

    S2. Product Analysis,       S8: Ultrasonic Examination

    S3: Simulated pos-weld heat treatment of mechanical 

    S15: Reduction of area measurement and test coupons

    S18: Maximum Tensile strength

    S6: Drop weight test

    S30Charpy V notch impact test for structural shapes


    Welcome to Unitedsteel Group and any requirement in steel material, please feel free to contact us.

    Email: sale1@gangsteel.com 


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    • Email:david@gangsteel.com Skype ID:gangsteel001@hotmail.com