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High Quailty 20Mn2 40Mn2 50Mn2 Hot Rolled Black Low Carbon Steel Plate

Short Description:

20Mn2, 40Mn2, and 50Mn2 are all low alloy steels with varying compositions and properties. These steel plates are commonly used in the manufacturing of various mechanical parts and components that require high strength, toughness, and wear resistance. The specific details of the steel plates, such as dimensions, tolerances, and surface finish, can be obtained from steel suppliers or manufacturers based on your specific requirements.


  • Processing Services: Bending, Decoiling, Cutting, Punching
  • Inspection: SGS, TUV, BV, factory inspection
  • Standard: AiSi, ASTM, DIN, GB, JIS
  • Width: customize
  • Application: building materials
  • Certificate: JIS, ISO9001, BV BIS ISO
  • Delivery Time: 3-15 days (according to the actual tonnage)
  • Port Information: Tianjin Port, Shanghai Port, Qingdao Port, etc.
  • Product Detail

    Product Tags

    STEEL PLATE

    Product Detail

    Item Specification
    Product Name Hot-rolled steel sheet (Best-selling, high quality)
    Material Grades 10#, 20#, 45#, 16Mn, A53 (A/B), Q195, Q215, Q235, Q345, St37, St42, St37-2, St52, 20Mn2, 40Mn2, 50Mn2, 20Cr, 40Cr, 42CrMo, 35CrMo, 20CrMo, 12CrMo, 15CrMo, 12Cr1MoV, 25Cr2Mo1VA, 40CrNiMoA, etc.
    Thickness 1.5 mm – 24 mm
    Standard Sizes 3 × 1219 mm / 3.5 × 1500 mm / 4 × 1600 mm / 4.5 × 2438 mm (custom sizes available)
    Standards ASTM A53, ASTM A106, ASTM A252, ASTM A450, ASME B36.10M, BS 1387, BS EN 10219, BS EN 10296, GB/T 3091, GB/T 13793, GB/T 9711, etc.
    Steel Grades Equivalent A53–A369, Q195–Q345, ST35–ST52, Grade A / B / C
    Production Process Hot rolled
    Surface Treatment Mill finish, oiled, black painted, galvanized, anti-rust oil, PVC coating (customized available)
    End Type (if applicable) Plain end, beveled end, threaded, grooved, plastic cap protection
    Packaging Bundled packing with steel strips, waterproof wrapping, or customized export packing
    Applications Building structures, machinery manufacturing, lifting equipment, agricultural machinery, construction engineering, general fabrication
    Origin Tianjin, China
    Certificates ISO 9001, SGS, BV, TUV
    Delivery Time 7–10 days after receiving advance payment (depending on order quantity)

    20Mn2, 40Mn2, and 50Mn2 are all low alloy steels with varying compositions and properties. Here are the details for each of these steel grades:

    20Mn2 Steel:

    Carbon Content: 0.17-0.24%
    Manganese Content: 1.40-1.80%
    Typical Uses: Structural parts, gears, shafts, heavy-duty machinery
    Mechanical Properties: Tensile strength of 800-1000 MPa, yield strength of 650-800 MPa

    40Mn2 Steel:

    Carbon Content: 0.37-0.44%
    Manganese Content: 1.40-1.80%
    Typical Uses: Gears, crankshafts, connecting rods
    Mechanical Properties: Tensile strength of 740-980 MPa, yield strength of 540-685 MPa

    50Mn2 Steel:

    Carbon Content: 0.47-0.55%
    Manganese Content: 1.40-1.80%
    Typical Uses: Heavy-duty gears, shafts, crankshafts
    Mechanical Properties: Tensile strength of 785-980 MPa, yield strength of 590-735 MPa

    Steel Plate Gauge Table

    Gauge Thickness Comparison Table
    Gauge Mild Aluminum Galvanized Stainless
    Gauge 3 6.08mm 5.83mm   6.35mm
    Gauge 4 5.7mm 5.19mm   5.95mm
    Gauge 5 5.32mm 4.62mm   5.55mm
    Gauge 6 4.94mm 4.11mm   5.16mm
    Gauge 7 4.56mm 3.67mm   4.76mm
    Gauge 8 4.18mm 3.26mm 4.27mm 4.19mm
    Gauge 9 3.8mm 2.91mm 3.89mm 3.97mm
    Gauge 10 3.42mm 2.59mm 3.51mm 3.57mm
    Gauge 11 3.04mm 2.3mm 3.13mm 3.18mm
    Gauge 12 2.66mm 2.05mm 2.75mm 2.78mm
    Gauge 13 2.28mm 1.83mm 2.37mm 2.38mm
    Gauge 14 1.9mm 1.63mm 1.99mm 1.98mm
    Gauge 15 1.71mm 1.45mm 1.8mm 1.78mm
    Gauge 16 1.52mm 1.29mm 1.61mm 1.59mm
    Gauge 17 1.36mm 1.15mm 1.46mm 1.43mm
    Gauge 18 1.21mm 1.02mm 1.31mm 1.27mm
    Gauge 19 1.06mm 0.91mm 1.16mm 1.11mm
    Gauge 20 0.91mm 0.81mm 1.00mm 0.95mm
    Gauge 21 0.83mm 0.72mm 0.93mm 0.87mm
    Gauge 22 0.76mm 0.64mm 085mm 0.79mm
    Gauge 23 0.68mm 0.57mm 0.78mm 1.48mm
    Gauge 24 0.6mm 0.51mm 0.70mm 0.64mm
    Gauge 25 0.53mm 0.45mm 0.63mm 0.56mm
    Gauge 26 0.46mm 0.4mm 0.69mm 0.47mm
    Gauge 27 0.41mm 0.36mm 0.51mm 0.44mm
    Gauge 28 0.38mm 0.32mm 0.47mm 0.40mm
    Gauge 29 0.34mm 0.29mm 0.44mm 0.36mm
    Gauge 30 0.30mm 0.25mm 0.40mm 0.32mm
    Gauge 31 0.26mm 0.23mm 0.36mm 0.28mm
    Gauge 32 0.24mm 0.20mm 0.34mm 0.26mm
    Gauge 33 0.22mm 0.18mm   0.24mm
    Gauge 34 0.20mm 0.16mm   0.22mm
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    Product Of Advantages

    The main characteristics of carbon steel plates include:

    Processability: Carbon steel sheets have low hardness, are easy to process, and have good ductility. This makes them easier to shape and bend during processing.

    Mechanical Properties: Due to the softening of steel at high temperatures, hot rolling improves the internal structure of the steel, making it denser and stronger, thus improving its mechanical properties. Simultaneously, under high temperature and pressure, internal defects in the steel, such as bubbles, cracks, and looseness, can be removed.

    Surface Quality: Because an oxide layer easily forms on the surface during hot rolling, the surface smoothness is lower, resulting in relatively poor surface quality for wholesale carbon steel sheets.

    Strength and Toughness: Hot-rolled steel sheets have relatively low strength but good toughness and ductility. They are typically used to produce medium-thickness steel sheets, suitable for applications requiring high plasticity.

    Thickness: Hot-rolled steel sheets can be thicker, while cold-rolled steel sheets are typically thinner.

    Applications: Hot-rolled steel sheets are commonly used in the production of structural steel, weathering steel, automotive structural steel, etc., and are also suitable for manufacturing various mechanical parts and high-pressure gas pressure vessels.

    Main Application

    application

    Application of Hot Rolled Steel Plate

    1. Construction Industry

    Hot-rolled steel plates are standardized products used in building structures such as beams, supports, floor slabs, walls, and roofs. Due to their high strength and reliability, they are also commonly used in the construction of large infrastructure projects such as bridges and skyscrapers.

    2. Automotive Industry

    Hot-rolled steel sheets play a vital role in the automotive industry, used to manufacture various body structural components, including frames, doors, and hoods.

    3. Energy Industry

    Steel plates are also used in energy infrastructure, such as power plants, transmission towers, and oil and gas pipelines. These applications place high demands on the service life and load-bearing capacity of the steel sheets.

    4. Machinery Manufacturing

    Hot-rolled steel sheets are suitable for various industrial applications, such as machine tools, heavy machinery parts, and robots.

     

    Note:
    1.Free sampling, 100% after-sales quality assurance, Support any payment method;
    2.All other specifications of round carbon steel pipes are available according to your requirement (OEM&ODM)! Factory price you will get from ROYAL GROUP.

    Process of production

    Hot rolling is a mill process which involves rolling the steel at a  high temperature

    which is above the steel’s recrystallization temperature.

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    Product Inspection

    sheet  (1)
    sheet  (209)
    QQ图片20210325164102
    QQ图片20210325164050

    Packing and Transportation

    Packaging

    Hot rolled steel plates are usually packed in strong bundles with export standard to keep the steel plates in good condition during shipping. Each bundle is tied firmly by several steel straps and wrapped in waterproof materials to avoid getting wet and rust in stored and shipped. Other protections can be used according to buyer's requests like plastic film, PVC film or rust preventive oil film. The Lot number, heat number and the product specifications etc are printed on the labels for easy recognition.

    Delivery

    Flexible delivery solutions available upon order quantity and destination. Regular production and delivery time is in 7–10 days for the goods with receiving your prepayment. Please note that delivery time may be flexible for large quantity or customized order. The products can be sent by sea, land or air by combination as per global project requisites, to make sure they arrive precisely at destination port or site safely and on time.

    STEEL PLATE (2)

    Transportation: Express (Sample Delivery), Air, Rail, Land, Sea shipping (FCL or LCL or Bulk)

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    FAQ

    Q: Are u a manufacturer?

    A: Yes, we are a manufacturer. We have our own factory located in Daqiuzhuang Village, Tianjin City, China. Besides, we cooperate with many state-owned enterprises, such as BAOSTEEL, SHOUGANG GROUP, SHAGANG GROUP,etc.

    Q: Can I have a trial order only several tons?

    A: Of course. We can ship the cargo for u with LCL serivece.(Less container load)

    Q: Do u have payment superiority?

    A: 30% deposit by T/T, the balance against copy of B/L by T/T.

    Q: If sample free?

    A: Sample free, but the buyer pays for the freight.

    Q: Are you gold supplier and do trade assurance?

    A: We 13 years gold supplier and accept trade assurance.


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