OEM/ODM China M2 Tool Steel | 1.3343 | HS-6-5-2C| SKH51 Factory from Mongolia

OEM/ODM China M2 Tool Steel | 1.3343 | HS-6-5-2C| SKH51 Factory from Mongolia

Short Description:

AISI M2 Tool Steelis molybdenum based high-speed steel in tungsten–molybdenum series. HSS grade steel M2 is a medium alloyed high speed steel which has good machinability. TheH-SS M2 chemical composition gives a good combination of well-balancedtoughness, wear resistance and red hardness properties. Widely used forcutting tools such as twist drills, taps, milling cutters, saws, knivesetc. Also commonly used in cold work punches and dies and cuttingapplications involving high speed and light c...


  • Length: 3-5.8mm or Customization
  • Surface: black, peeled, or rough turned
  • Heat treatment: air-cooling, normalized, annealed, Q&T
  • Smelting process: EAF+LF+VD
  • Product Detail

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    Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs of OEM/ODM China M2 Tool Steel | 1.3343 | HS-6-5-2C| SKH51 Factory from Mongolia, We fully welcome customers from all over the world to establish stable and mutually beneficial business relationships, to have a bright future together.


    AISI M2 Tool Steelis molybdenum based high-speed steel in tungsten–molybdenum series. HSS grade steel M2
    is a medium alloyed high speed steel which has good machinability. The
    H-SS M2 chemical composition gives a good combination of well-balanced
    toughness, wear resistance and red hardness properties. Widely used for
    cutting tools such as twist drills, taps, milling cutters, saws, knives
    etc. Also commonly used in cold work punches and dies and cutting
    applications involving high speed and light cuts.

    Grade M2 High Speed Steel is by far the most popular high speed steel replacing high speed steel grade T1 in most applications because of its superior properties and relative economy.

    1.Common M2 Tool Steel Related Specifications and Equivalents

    Country USA German Japan
    Standard ASTM A600 DIN EN ISO 4957 JIS G4403
    Grades M2 1.3343 SKH51

    2. ASTMM2 Tool Steel Chemical Composition Properties

    ASTM A600 C Mn P S Si Cr V Mo W
    M2 regular C 0.78 0.88 0.15 0.40 0.03 0.03 0.20 0.45 3.75 4.50 1.75 2.20 4.50 5.50 5.50 6.75
    DIN ISO 4957 C Mn P S Si Cr V Mo W
    1.3343 0.86 0.94 0.45 3.80 4.50 1.70 2.10 4.70 5.20 5.90 6.70
    JIS G4403 C Mn P S Si Cr V Mo W
    SKH51 0.80 0.88 0.40 0.03 0.03 0.45 3.80 4.50 1.70 2.10 4.70 5.20 5.90 6.70

    3. AISI HSS M2 Tool Steel Mechanical Properties

      Physical Propertiesof HSS M2 Material

      Density 0.294 lb/in3(8138 kg/m3)
      Specific Gravity 8.15
      Modulus of Elasticity 0.294 lb/in3(8138 kg/m3)
      Thermal conductivity 24 Btu/ft/hr/°F 41.5 W/m/°K
      Machinability 65% of a 1% carbon steel

        AISI M2 Tool Steels PropertiesMechanical

        Mechanical properties Metric Imperial
        Hardness, Rockwell C (tempered at 1150°F, quenched at 2200°F) 62 62
        Hardness, Rockwell C (as hardened, quenched at 2200°F) 65 65
        Compressive yield strength (when tempered at 300°F) 3250 MPa 471000 psi
        Izod impact unnotched (when tempered at 300°F) 67 J 49.4 ft-lb
        Abrasion (loss in mm3, as-hardened; ASTM G65) 25.8 25.8
        Abrasion (loss in mm3, tempered at 1275°F; ASTM G65) 77.7 77.7
        Poisson’s ratio 0.27-0.30 0.27-0.30
        Elastic modulus 190-210 GPa 27557-30458 ksi

          M2 Steels Thermal Properties

          Thermal properties Metric Imperial
          CTE, linear (@20.0 – 100°C/ 68.0 – 212°F) 10 μm/m°C 5.56 μin/in°F
          CTE, linear (@20.0 – 500°C/68.0 – 932°F) 12.2 μm/m°C 6.78 μin/in°F
          CTE, linear (@20.0 – 850°C/68.0 – 1560°F) 12.6 μm/m°C 7 μin/in°F

          4.Forging of AISI M2 High Speed Steel

          Pre
          heat M2 HSS steel slowly and uniformly to 850-900°C. The heat should
          then be increased more quickly to the forging temperature of
          1050-1150°C. If during the forging
          the temperature of the M2 high speed tool steel material drops below
          880-900°C, re-heating will be necessary. Cool the M2 steel component
          very slowly after forging.

          5. Heat Treatment of M2 Steel HSS

            Anneal

            Heat
            to 1600° F, soak thoroughly at heat. Furnace cool 25° F per hour to
            900° F, air cool to room temperature. Approximate annealed hardness 241
            Maximum Brinell.

            Stress Relief of Unhardened Material: Heat slowly
            to 1200 to 1250° F. Soak for two hours per inch of thickness at heat.
            Slow cool (furnace cool if possible) to room temperature.

              Hardening

              Preheat: Heat slowly to 1550° F, soak thoroughly, heat to 1850° F, soak thoroughly.

                Harden

                Soak
                time in the furnace varies from a few minutes to a 15 minutes,
                depending tool size, heat capacity of the furnace, and the size of the
                charge. – Heat to 2150 to 2200° F for max. toughness and minimum
                distortion. – Heat to 2250 to 2275° F for max. hardness and abrasion
                resistance.

                  Quench

                  For full
                  hardness, oil quench to 150-200° F. Air quench to 150° F. When quenching
                  in hot salt maintain the quench just above the Ms temperature. After
                  equalizing withdraw parts from the hot salt and air cooled to 150° F.

                    Temper

                    Double
                    temper is mandatory, three tempers are sometimes preferred. Soak for 2
                    hours per inch of thickness. Air cool to room temperature between
                    tempers. The best tempering range for hardness, strength and toughness
                    is 1000 to 1050° F.

                    Temper° F Rockwell “C” Temper° F Rockwell “C”
                    As-quenched 64 900 64
                    400 63 1000 65.5
                    500 62.5 1050 63.5
                    600 62.5 1100 61.5
                    700 62.5 1150 60
                    800 63.5 1200 53

                    6.Machinability of AISI M2 Tool Steel H-SS

                    Shaping
                    of HSS M2 tool steels can be carried out using grinding methods.
                    However, they have poor grinding capability and hence they are regarded
                    as “medium” machinability tool steel under annealed conditions. The
                    machinability of these tool steels M2 is only 50% of that of the easily
                    machinable W group or water hardening tool steels.

                    7. M2 Tool Steel Applications

                    The main use of high-speed steels continues to be in the manufacture of various cutting tools.

                    Typical
                    applications for M2 high speed steel are twist drills, reamers,
                    broaching tools, taps, milling tools, metal saws. M2 is suitable for
                    cold forming tools such as extrusion rams and dies, also widely used in
                    all kinds of cutting tools, knife and punches and die applications,
                    plastic moulds with elevated wear resistance and screws.


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