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Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400

    Buy cheap Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400 from wholesalers
     
    Buy cheap Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400 from wholesalers
    • Buy cheap Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400 from wholesalers
    • Buy cheap Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400 from wholesalers
    • Buy cheap Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400 from wholesalers
    • Buy cheap Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400 from wholesalers

    Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400

    Ask Lasest Price
    Brand Name : UST
    Model Number : ASTM 4340
    Certification : ISO 9001:2008
    Price : USD 800-2000 / Metric Ton
    Payment Terms : L/C, T/T, D/A, D/P
    Supply Ability : 1000 Metric Tons per Month
    Delivery Time : 15-35 days
    • Product Details
    • Company Profile

    Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400

    AISI 4340 (G43400) Low Alloy High Tensile Steel Bar / Rod 12-320mm


    INTRODUCTION


    Alloy steels are designated by AISI four-digit numbers. They comprise different kinds of steels having composition exceeding the limitations of B, C, Mn, Mo, Ni, Si, Cr, and Va set for carbon steels.


    AISI 4340 alloy steel is a heat treatable and low alloy steel containing chromium, nickel and molybdenum. It has high toughness and strength in the heat treated condition.


    APPLICATIONS


    It is usually used in making gears, shafts, piston etc. Like the high wear-resistance parts which are used in plane and automotive etc.

    SUPPLY RANGE OF ALLOY 4340
    -Dimension: Diameter 4-1600 mm, any length below 16 meters

    -Delivery Conditions:

    Cold drawn: 4-100 mm

    Peeled: 30-160 mm

    Grinded: 4- 600 mm

    Turned: 130-1200 mm

    Hot rolled: 12-320 mm

    Hot forged: 130-1600 mm

    - EAF+(ESR) or EAF+LF+VD+(ESR)

    - HOT rolled; Cold rolled; Forged; Cold Drawn

    - Heat Treatment: Untreated, Annealing, N+T, Q+T

    - Smelting: EAF+LF+VD (+ESR)

    - Surface Finish: Black, Rough Machined, Peeled, Turned or upon request

    - UT 100% passed

    - Cutting service provided

    - Third Party inspection is acceptable (SGS, BV etc.)



    STEEL EQUIVALENCY


    CountryUSABritainBritainJapan
    StandardASTM A29EN 10250BS 970JIS G4103
    Grades434036CrNiMo4/
    1.6511
    EN24/817M40SNCM 439/SNCM8

    CHEMICAL COMPOSITION


    StandardGradeCMnPSSiNiCrMo
    ASTM A2943400.38-0.430.60-0.800.0350.0400.15-0.351.65-2.000.70-0.900.20-0.30
    EN 1025036CrNiMo4/
    1.6511
    0.32-0.400.50-0.800.0350.0350.400.90-1.200.90-1.20.15-0.30
    BS 970EN24/817M400.36-0.440.45-0.700.0350.0400.1-0.401.3-1.71.00-1.400.20-0.35
    JIS G4103SNCM 439/SNCM80.36-0.430.60-0.900.0300.0300.15-0.351.60-2.000.60-1.000.15-0.30

    MECHANICAL PROPERTIES



    Normalized 4340

    Annealed 4340

    Tensile Strength

    185,500 psi

    108,000 psi

    Yield Strength

    185,500 psi

    68,500 psi

    Elongation (2")

    12.2%

    22%

    Reduction in Area

    36.3%

    49.9%

    Brinell Hardness

    363

    217



    Fabrication and Heat Treatment


    Machinability

    AISI 4340 alloy steel can be machined using all conventional techniques. Machining process can be performed in the annealed or normalized and tempered conditions.


    Forming
    AISI 4340 alloy steel has good ductility and formability in the annealed condition. It can be bent or formed by pressing or spinning in the annealed state.


    Welding
    AISI 4340 alloy steel can be welded using fusion or resistance welding methods. Preheat and post heat weld procedures are followed while welding this steel by established methods.


    Heat Treatment
    AISI 4340 alloy steel is heat treated at 830°C (1525°F) followed by quenching in oil.


    Forging
    AISI 4340 alloy steel is forged at 427 to 1233°C (1800 to 2250°F).


    Cold Working
    AISI 4340 alloy steel can be cold worked using all conventional methods in the annealed condition. It has high ductility.


    Annealing
    AISI 4340 alloy steel is annealed at 844°C (1550°F) followed by cooling the furnace.


    Tempering
    AISI 4340 alloy steel should be in the heat treated or normalized and heat treated condition before tempering. Tempering temperatures depend upon the desired strength level.


    Hardening
    AISI 4340 alloy steel can be hardened by cold working or heat treatment.



    What we can offer?

    -We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.

    -Machining and heat treatment are available.

    -Also, we advise you in choosing the right materials.


    Shape Available

    • Solid round bar
    • Flat bar
    • Square bar
    • Hexagon bar
    • Block
    • Plate
    • Sheet
    • Wire rod
    • Strip

    Our Advantages

    • High mechanical property and quenching, enable the surface share equal hardness after deal with it
    • Good polishing and low roughness
    • Making the heat-treatment to harden condition before using it
    • Competitive price
    • Fast production lead-time
    • All the material are inspected with 3 times to meet the highly standards
    • Pure steel quality & stable quality to be guarantee

    OUR MAIN PRODUCTS ARE LISTED AS BELOW



    Notes:

    Available Size:
    -Round: Dia. 4-1600 mm
    -Flat: T. 10-120 mm x W. 60-810 mm
    -Block: T. 80-1200 mm x W. 100-1600 mm


    PAYMENT AND SHIPPING


    1. Both T/T and L/C will be acceptable

    2. Trade Terms: FOB, CIF, CFR

    3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties

    4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples


    COMPANY INFORMATION


    Shanghai Unite Steel Trading Co., Ltd

    We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.

    In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.

    What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!


    FAQ


    Q: Are you a manufacturer or merely a trader?
    A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.

    Q: How do you guarantee the quality of your product?
    A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.

    Q: Delivery time?
    A: We have ready stock for most of material grades in our warehouse. If the material doesn't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.

    Q: What is the payment term?
    A: T/T or L/C.

    Q: Can we visit your company and factory?
    A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.


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