Hs 6-5-2 - M2 High speed Steel
HS 6-5-2 is a Tungsten Molybdenum general purpose high speed steel. HS 6-5-2 High Speed Steel is characterised by having small and evenly distributed carbides, giving well balanced toughness, wear resistance and red hardness properties. Capable of acheiving 64-66 HRC after treatment. It is by far the most popular high speed steel for most applications because of its superior properties such as its bending strength, toughness, edge holding and thermo plasticity. HS 6-5-2 High Speed Steel is a great allrounder with good machinability, in this respect it is superior to the high alloyed cold work steels.
|HS 6-5-2 High Speed Steel - Typical Chemical Analysis wt %|
Applications for HS 6-5-2 High speed steel
Typical applications for HS 6-5-2 High Speed Steel include Shear blades, woodworking tools, circular saw segments, metal cutting tools, milling cutters, mould liners, saws, and knives.
Soft Annealing HS 6-5-2 high speed steel
In order to avoid decarburization, HS 6-5-2 High Speed Steel should be annealed in a controlled neutral atmosphere, ie a vacume furnace
Heat rate 222°C per hour to 840°C - Soak thoroughly at heat - Furnace cool 28°C per hour to 538°C - Continue cooling in furnace or air.
Aproximate annealed hardness 241 HB Max.
Machineability of m2 high speed steel
HS 6-5-2 is classified as a medium machinability tool steel in the annealed condition. it has a machinability rating of 65% when compared to a 1% carbon steel rated at 100.
|HS 6-5-2 High Speed Steel Steel - Mechanical Properties at ambient temperature|
Tempered at 620°C - Quenched at 1205°C - Hardness 62 HRC
As Hardened - Quenched at 1205°C - Hardness 65 HRC
Compressive yeild strength - Tempered at 150°C - 3250 MPa
Izod impact unnotched - Tempered at 150°C - 67 J
Abrasion - Loss in mm³ as hardend - ASTM G65 - 25.8mm³
Forging HS 6-5-2 High Speed steel
Pre heat slowly and uniformly 850-900°C - The heat should then be increased more quickly to the forging temprature of 1050-1150°C - If during forging the temprature of the material should drop below 880-900°C reheating will be necessary. Cool the HS 6-5-2 very slowly after forging
Hardening HS 6-5-2 High Speed STeel
Pre heat the material in two steps - 450-500°C then 850-900°C - Continue heating to the final hardening temprature of 1200-1250°C
Follow by quenching in oil or brine.
If quenching in oil remove the the component(s) from the oil at approximately 500°C then cool in air.
Tempering HS 6-5-2 High Speed STeel
Tempering temperature: 3 x 1 Hour at 540-560°C
Heat Treatment Advise of HS 6-5-2 High Speed STeel
Treatment temperatures, including the rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each HS 6-5-2 High Speed Steel component. other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance for the heat treatment of HS 6-5-2 High Speed Steel.
|HS 6-5-2 High Speed Steel - Physical properties|
Density - 8138 kg/m³
Modulus of elasticity - (10³ x N/mm²) : 217
Specific Gravity - 815
Thermal conductivity. (W/m/°K): 19.0
Electric resistivity. (Ohm mm²/m): 0.54
Specific heat capacity. (J/g.K): 0.46
Welding of HS 6-5-2 High Speed steel
We recommend specialist advice to be sought
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustrations to enable the reader to make their own evaluations. They are not intended to either express or imply the suitability for these or any other purposes