Otai

Maybe Best 4140 Plate supplier in China

Over 10000+ tons of 4140 / 42CrMo4 alloy steel plate thickness 4mm~300mm avaiable in stock for immediate delivery

Happy & Intimate Customers

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    Why more people choose Otai Steel

    # 01

    ISO 9001 & SGS Certified

    Best quality is essential for steel material supply. Otai tries to exceed your expection.

    # 02

    Widest Range of Sizes

    Maybe we have the widest range of thickness 4140 palte in stock in China.

    # 03

    Prompt Delivery

    Need a large 4140 steel plate? order it today and load it tomorrow!

    6

    6 Reasons Why Our Clients Buying 4140 Plate From Us

    6 Reasons Why Our Clients Buying 4140 Plate From Us

    1

    Wide Sizes Selection

    From 4mm to 300mm, over 10000 tons 4140 plate in stock, find the perfect 4140 steel plate thickness in our extensive inventory.

    otai keeps wide range of size, thickness from 4mm to 300mm available for your selection from the inventory list, to save your time.

    Wide Sizes Selection

    From 4mm to 300mm, over 10000 tons 4140 plate in stock, find the perfect 4140 steel plate thickness in our extensive inventory.

    otai keeps wide range of size, thickness from 4mm to 300mm available for your selection from the inventory list, to save your time.
    ASTM 4140 plate or flat in hot rolled, annealed, QT prehard condition, for your choice, to match your difference applications.

    2

    Different Condition to Match Your Demand

    Hot-rolled, Q+T (pre hard), or annealed condition. We offer AISI 4140 steel plates in the exact condition you need, for different applications.

    Different Condition to Match Your Demand

    Hot-rolled, Q+T (pre hard), or annealed condition. We offer AISI 4140 steel plates in the exact condition you need, for different applications.

    ASTM 4140 plate or flat in hot rolled, annealed, QT prehard condition, for your choice, to match your difference applications.

    3

    Quality Comes First Always

    With ISO 9001 certified & SGS inspection, Otai supplies you reliable quality for AISI / ASTM 4140 steel plate or flat bar.

    With ISO 9001 certified & SGS inspection, Otai supplies you reliable quality for AISI / ASTM 4140 steel plate or flat bar. We do chemical composition analysis, hardness test, Ultrasonic Test (UT) or other mechanical properties test for 4140 plate / flat bar we supply.

    Quality Comes First Always

    With ISO 9001 certified & SGS inspection, Otai supplies you reliable quality for AISI / ASTM 4140 steel plate or flat bar.

    With ISO 9001 certified & SGS inspection, Otai supplies you reliable quality for AISI / ASTM 4140 steel plate or flat bar. We do chemical composition analysis, hardness test, Ultrasonic Test (UT) or other mechanical properties test for 4140 plate / flat bar we supply.
    big 4140 plate available in stock, you order it today, we can load it tomorrow. cut to size 4140 steel plates delivered in 7 days. for big quantity of 4140 plates delivery time, please check with us.

    4

    Prompt Delivery (Order Today, Load Tomorrow)

    Need it fast? Large 4140 steel plates delivered the next day, processed 4140 alloy plates in just 7 days.

    Prompt Delivery (Order Today, Load Tomorrow)

    Need it fast? Large 4140 steel plates delivered the next day, processed 4140 alloy plates in just 7 days.

    big 4140 plate available in stock, you order it today, we can load it tomorrow. cut to size 4140 steel plates delivered in 7 days. for big quantity of 4140 plates delivery time, please check with us.

    5

    Cut to Size & Cut to Length

    With our advanced band saws & CNC machines, we can cut 4140 plates according to your exact specifications, to save your time and your money.

    With our advanced band saws & CNC machines, we can cut 4140 plates according to your exact specifications, to save your time and your money.

    Cut to Size & Cut to Length

    With our advanced band saws & CNC machines, we can cut 4140 plates according to your exact specifications, to save your time and your money.

    With our advanced band saws & CNC machines, we can cut 4140 plates according to your exact specifications, to save your time and your money.
    with CNC machines and polishing machines, we could supply you machined or ground 4140 flat bar to save your time and save your cost.

    6

    Machining & Customized Service

    Your requirements, our execution. From size tolerance to surface roughness for 4140 steel plates, we've got you covered.

    Machining & Customized Service

    Your requirements, our execution. From size tolerance to surface roughness for 4140 steel plates, we've got you covered.

    with CNC machines and polishing machines, we could supply you machined or ground 4140 flat bar to save your time and save your cost.

    Deliver more than 100 difference steel grades to over 60 countries

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      FAQ

      What is the availability of 4140 Plate Stock?

      We maintain a robust stock of 4140 Plate in various sizes and thicknesses to meet the immediate needs of our clients. Usually thickness from 4mm up to 300mm thickness is available in stock and the total stock materials is over 10000 tons. Contact us for the latest 4140 steel plate stock list.

      What is the price range for 4140 Steel Plate?

      The price of 4140 Steel Plate varies based on the size, thickness, and supplier. Please submit the form to have the best price shortly.

      What is the significance of the 4140 in 4140 Plate Steel?

      The 4140 in 4140 Plate Steel denotes the grade of steel, which is a chromium-molybdenum alloy steel. This grade of steel is known for its high tensile strength and toughness.

      How does AISI 4140 Plate compare to other types of steel plates?

      AISI 4140 Plate is known for its superior strength, hardness, and wear resistance compared to other steel plates. It is often used in applications where high-stress resistance and durability are required.

      Can you provide information on the ASTM specifications of 4140 Plate?

      The 4140 Plate adheres to ASTM A29 standards which ensure its quality and consistency across all pieces. It covers the mechanical and chemical requirements for the product.

      What is the difference between 4140 Annealed Plate and 4140 As Rolled Plate?

      4140 Annealed Plate undergoes a softening process to improve its machinability, while 4140 As Rolled Plate is supplied in the rolled condition without any further heat treatment.

      What are the features of 4140 HR AR Plate ASTM A29?

      The 4140 HR AR (Hot Rolled As Rolled) Plate as per ASTM A29 showcases high tensile strength and hardness, making it suitable for applications that demand durability and resistance to wear.

      Where can I find 4140 Steel Plate for sale?

      We offer 4140 Steel Plate for sale. You please submit the form or contact us to have the latest stock list and the on sale price today.

      What sizes are available for 4140 Steel Plate?

      4140 Steel Plate is available in a variety of sizes ranging from small to large, and in different thicknesses from 3mm up to 500mm. The exact latest dimensions can be provided by our sales team upon request.

      Who are the suppliers of 4140 Plate?

      We are one of the reputable suppliers of 4140 Plate with a commitment to providing high-quality products and services. We probably keep the big quantity and wide range of 4140 steel plate in China. You could get your size and best price here at Otai. Contact us for the best offer and fastest delivery.