Pm m4 high speed tool steel is an extremely versatile high speed steel that provides a unique combination of high wear resistance from the large volume of vanadium carbides with high impact toughness and transverse bend strength which are results of the fine grain size small carbides and superior.
M4 tool steel compressive strength.
Compressive strength 0 02 proof stress kgf mm2 500 400 300 200 100 n mm2 5 000 4 000 3 000 2 000 1 000 56 58 60 62 64 66 68 70 hardness hrc compressive strength sld sld sld 0 2 proof stress tensile strength characteristics of yss cold work tool steels 6.
Made from powdered metal m4 tool steel has a consistent microstructure that gives it outstanding resistance to wear and abrasion.
The high impact toughness and high transverse bend strength are results of the fine grain.
A2 d2 and m4.
Griggs steel offers the following powder metal high speed steels.
Compressive strength is a little known and often overlooked characteristic of tool steels.
It is a measurement of the maximum load an item can withstand before deforming or before a catastrophic failure occurs.
Cpm rex m4 hc high speed steel is an extremely versatile high speed steel that provides a unique combination of high wear resistance with high impact toughness and transverse bend strength.
As a result dozens of tool steel types exist.
However the aisi sae tool steel code categorizes tool steels based on basic application and material characteristics.
M2 tool steels are pre heated prior to hardening at 2610 c 4730 f followed by rapid heating from 2610 c 4730 f to 3960 c 7160 f.
The high carbon content enables m4 steel to be hardened in excess of 65hrc.
Hs 6 5 4 e m4 skh 54 stark.
In fact solid carbide tooling is typically 85 or 90 tungsten carbide particles in a matrix of 10 or 15 cobalt to hold them together.
Hardness vs compressive yield strength.
The specific properties of s7 d2 and a2 tool steels which are among the most popular in industrial and manufacturing applications today are discussed in further detail below.
They are alloy content and tool steel hardness.
Pm m4 high speed steel.
Sbsm high speed steel properties comparison.
A large volume of vanadium carbides provides the high wear resistance.
These steels are then cooled for 3 to 5 min and quenched in air salt bath or oil.
Two factors affect compressive strength.
The grade has an excellent balance of toughness and wear resistance making it ideal for cutting tools and for cold work tooling.
Pm m4 is a molybdenum tungsten high speed steel produced using the pm powdered metal steel making process.
Use it for punches dies and high speed cutting tools.
However the high hardness and high vanadium carbide content make it more difficult to grind after heat treatment compared to m2 and other high speed steels.
Pm steels have excellent grindability vs conventional steels.
Griggs steel color code.
M2 tool steels are annealed at 1204 c 2200 f and cooled at 72 c 162 f per hour or even less.
These rods are decarb free for a uniform surface that will consistently accept heat treating.
Ideally tool steels would contain as much carbide volume as needed for the desired wear performance.
