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hot rolled 1.2738 plate

Port: Hu nan

Supply Ability: 50000 Ton/Tons per Month

Min.Order Quantity: 0.1 Ton/Tons

E-mail:export@qilucs.com

  • Quick Details

    Standard: AISI, ASTM, BS, DIN, GB, JIS
    Grade: 1.2738/718/HPM1
    Thickness: 1mm-800mm
    Place of Origin: Shanghai, China (Mainland)
    Brand Name: Baosteel
    Model Number: 1.2738/718/HPM1
    Type: Steel Plate
    Technique: Hot rolled /Hot forged
    Surface Treatment:Black/Machined/milled/grinded
    Application: plastic mould steel
    Special Use: High-strength Steel Plate
    Width: 60mm~2300mm
    Length: 500mm~5800mm
    Warranty: MTC / 3.1B
    Shape: flat /sheet/round bar
    Hardness: HB 300
    Certification: ISO9001, SGS, REACH, API
    Delivery condition: Hot rolled or forged, Peeled or black surface, annealed or QT.
    Inspection: UT, Mechanics, Physical testing, Chemical component analysis
    Our product line: Tool steel, Carbon structural steel, Alloy structural steel
    Annual turn over: USD 140,000,000.00
    Product Name: hot rolled 1.2738 plate
    Packaging & Delivery

    Packaging Details: 20ft: GW:17.5T; (5.69mX2.13mX2.18m,) 
    40ft: GW:22T; (11.8mX2.13mX2.18m,)
    Delivery Detail: 4~7 days


    hot rolled 1.2738 plate

    General Information:

    This steel grade was developed to complement standard mold steel to eliminate problems such as hardness drop-off towards the middle of the mold, maching problem and inadequate etch-grainability with large sizes of more than 400mm in cross section. A significant step taken towards dealing with these problems is to increase hardenability by alloying approximately 1% nickel.

     

    Application:

    It features excellent hardening penetration, good workability, polishing and photoengraving properties. This steel is used for plastic moulds of medium and big size. It can be subject to a nitriding treatment to improve it's wear resistance. Injection and thermoplastic extrusion moulds, rubber moulds, mould carrier frames, containers.

      

     

    Comparable Standards:                                                                                                       

    AISI/SAE DIN W.Nr. AFNOR JIS BS SIAU GB,YB

    718

    (P20+Ni)

    40CrMnNiMo8-6-4 1.2738 40CMND8 HPM1 / / 3Cr2MnNiMo

     

     Chemical Analysis (%):                                                                                                         

    C Mn Si Cr Ni Mo P S
    0.35-0.45 1.30-1.60 0.20-0.40 1.80-2.10 0.90-1.20 0.15-0.25 ≤0.03 ≤0.03

     

    Mechanical Properties:                                                                                   

    Hardness Y.S.(0.2%) UTS Elongation RoA Elastic Modulus
    HB Mpa KSI Mpa KSI % Z% GPA KSI
    300 826 120 993 145 17 59 205 29745

      

    Heat treatment                                                                                                        

    Annealing:

    Heat to 710~740°C, with hold at minimum rate for 3 hours.

    Slow furnace cooling to 600°C

     

    Stress relieving:

    To be carried out after machining and before the final heat treatment.

    Heating to 530~580°C for 2 hours.

     

    Hardening:

    Preheating to 500~550°C;

    - Austenitizing at 840~880°C

    - Oil or thermal bath cooling at 200~300°C, then oil cooling according to the steel shape and size.

    Quenched hardness: HRC 52~54

     

    Tempering:

    To be carried out after hardening and when the steel is at 60~80°C, at 500~600°C according to the required

    hardness and with permanence for at least 2hours; cooling in air.