SKH9 , SKH51, 1.3343 High Speed Steel

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SKH9 , SKH51, 1.3343 High Speed Steel  Tool Steel

We are the Leading Supplier of SKH9, SKH51 High Speed Steel. 
SKH9 High Speed Steel (M2 High Speed Steel) is a tungsten-molybdenum high speed steel with a well balanced composition suitable for a wide variety of applications.  

We supply and export to Singapore , Indonesia , Brunei and other ASEAN Countries.  
Our specialty is to provide wide range of stainless steel
 with no minimum order (MOQ).

E Steel supply High Speed Steel SKH9 (SKH51, M2 Steels) Round Bars / Rods / Shafts , SKH9 (SKH51, M2 Steels) Plates 

SKH9 Steel Suppliers - SKH51 Steel , AISI M2 , 1.3343 High Speed Steel  

SKH9 High Speed Steel (M2 High Speed Steel) is a tungsten-molybdenum high speed steel with a well balanced composition suitable for a wide variety of applications.  World wide, the M2 type is by far the most popular high speed steel having replaced T1 high speed in most applications because of its superior properties and relative economy.


Chemical Composition of SKH51 , SKH9 Steel 

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

SKH51 High Speed Steel also equivalent to 

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

Physical Properties of SKH9 , SKH51 Steel 

  • Density:  294 lb/in3 (8138 kg/m3)
  • Specific Gravity:  14
  • Modulus of Elasticity:  30 x 106 psi (207GPa)
  • Machinability:  50-60% of a 1% carbon steel

Mechanical Properties of M2 Tool Steel 

Mechanical Properties



Hardness, Rockwell C (tempered at 1150°F, quenched at 2200°F)



Hardness, Rockwell C (as hardened, quenched at 2200°F)



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)



Abrasion (loss in mm3, tempered at 1275°F; ASTM G65)



Poisson’s ratio



Elastic modulus

190-210 GPa

27557-30458 ksi



Heat Treating of SKH51 , SKH 9 Steel 

Hardening of HSS SHK9 / SKH51

To minimize distortion and stresses in large or complex tools use a double preheat. Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1100°F (593°C) equalize, then heat to 1450-1550°F (788-843°C). For normal tools, use only the second temperature range as a single preheating treatment.

Austenitizing (High Heat): Heat rapidly from the preheat.

For Cutting Tools:
Furnace: 2200-2250°F (1204-1232°C)
Salt: 2175-2225°F (1191-1218°C)
To maximize toughness, use the lowest temperature.
To maximize hot hardness, use the highest temperature.
For punches, dies, and tools that require maximum
toughness without hot hardness:
Furnace: 2075-2175°F (1175-1191°C)
Salt: 2050-2150°F (1121-1177°C)
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.


Applications of High Speed Steel SKH51 , SKH9  

SKH9 (SKH51) High Speed Tool Steel can be used in :
  • · Twist drills, taps, milling cutters, reamers, broaches, saws, and knives.


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Australia, Pakistan,  Malaysia, Singapore, Taiwan, China,Vietnam, Belgium, Japan, South Korea, Philippines, France, United Kingdom, Indonesia, Thailand, Hong Kong, China, Sweden, United States, Dubai, Finland, Brunei,Germany.

E Steel is a Global Metal Procurement Company in providing and sourcing raw materials to the wide range of engineering industries / sectors.  We works as the the Online B2B Metal Marketplace to help our customers in finding the special steels that might feel hard to source locally.  

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