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M2 1.3343 SKH9

Home>Products>High Speed Steel>M2 1.3343 SKH9

HSS M2 1.3343 SK H9---wire rod

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Specifications

1.3343 steel is a general purpose molybdenum high speed steel. 1.3343 steel is characterized by balanced combination of abrasion resistance, toughness and good red hardness. Due to its comparatively low carbon content, 1.3343steel has an excellent combination of toughness properties and abrasion resistance when properly hardened and tempered. 


Applications:

1.Machining tools, e.g drill bits, milling cutters, screw dies, broaches, inserts for circular saw blades;

2.Slotting tools and wood working tools.


Quick Detail:

M2/1.3343  wire rod


COMPOSITIONS:

        C       Mn        Si       Cr
       W
       Mo
        V
      0.85
      0.28      0.30
      4.15
      6.15
      5.00
      1.85


RELATIVE PROPERTIES

Coefficient of Thermal Expansion(65-66 HRC)
Temperature︒Fin/in︒F×10-6Temperature︒Cmm/mm︒C×10-6
70-200
5.69
21-9310.23
70-4006.0921-20410.95
70-6006.4221-31611.55
70-8006.6721-42712
70-10006.9721-35812.54


PHYSICAL PROPERTIES

· Density: 0.294 lb/in3 (8138 kg/m3)

· Specific Gravity: 8.14

· Modulus of Elasticity: 30 x 106 psi (207GPa)

· Machinability: 50-60% of a 1% carbon steel


HEAT TREATING INSTRUCTIONS

HARDENING

CRITICAL TEMPERATURE:
Ac1: 1530°F(832℃)Ac3: 1610°F(877℃)
AR1: 1430°F(777℃)AR3: 1380°F(749℃)


Quenching: Pressurized gas, warm oil, or salt. For pressurized gas, a rapid quench rate to below 1000°F (538°C) is critical to obtain the desired properties. For oil, quench until black, about 900°F (482°C), then cool in still air to 150 -125°F (66-51°C). For salt maintained at 1000-1100°F (538-593°C), equalize, then cool in still air to 150 -125°F (66-51°C).


Tempering: Temper immediately after quenching. Typical tempering range is 1025-1050°F (552-566°C). Hold at temperature for 2 hours, then air cool to ambient temperature. Double tempering is required. For large cross sections, and especially for blanks from which tools will be cut by wire EDM, triple tempering is strongly recommended.


ANNEALING

Annealing must be performed after hot working and before re-hardening.

Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1525-1550°F (829-843°C), 

and hold at temperature for 1 hour per inch (25.4 mm) of thickness, 2 hours minimum. 

Then cool slowly with the furnace at a rate not exceeding 50°F per hour (28°C per hour) to 1000°F (538°C). 

Continue cooling to ambient temperature in the furnace or in air. The resultant hardness should be 248 HBW or lower.


ADVANTAGE:

1.High speed tungsten-molybdenum tool steel;

2.High wear resistance;

3.High decarbonization.


ItemDimension  (mm)ProcessDelivery condition
Wire RodDIA 5.5 - 13Hot RolledBlack surface & Anneal




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