ASTM M4

2013-05-16 23:22:28 Print this page

The high quality USA ASTM M4 material is one of the more steel grades we supply, High-Speed Tool Steel. M4 is our main production grade, which has been approved by customers in many countries since its initial production, including our M4 round bars, flat bar, forgings, fasteners, tubes, wires, strips, sheets & Plates, as well as a variety of profiles, professional high precision auto-lathe processing manufacturer of clinching fasteners, axes, standoffs, screws, studs, nuts, bolt, OEM parts and special shaped turning partsthe state of delivery includes quenched and tempered, annealed, machined semi-finished products, we also have strict management of the packaging, to avoid material damage from transportation. We are the best supplier of M4 materials, and we are willing to develop together with customers from all over the world.

Also includes M4 steel material norm, chemical composition, mechanical properties, datasheet, M4 equivalent, heat treatment and temperature process of M4, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in M4 this steel grade have a more comprehensive understanding, Download the full M4 PDF version of this datasheet.

Chemical composition (wt.%) of M4

Elements	Min.（≥）	Max.（≤）
C	1.25	1.40
Si	0.20	0.45
Mn	0.15	0.40
P	-	0.030
S	-	0.030
Cr	3.75	4.75
Mo	4.25	5.50
V	3.75	4.50
W	5.25	6.50
Co	-	-

Mechanical Properties of M4

Rp0.2 (MPa)	Rm (MPa)	Impact KV (J)	Elongation A (%)	A Z (%)	Delivery	Hardness HB
945 (≥)	766 (≥)	14	31	44	Solution & Aging, Ann, Ausaging, Q+T	311