M42, High Speed Tool steel,forging round steel,alloy

1,M42/skh-9 2.High speed tool steel 3.forging 4.good machinability and polishing property 5.apply to die and cutting tool

M42

SKH9

With good toughness and high performance high speed tool steel

Specialty:

W-MO (6-5-2) is the most common high speed tool steel, especially SKH9 (SKH51). It replaces the W high speed tool steel SKH2 to be NO.1 of using in the world.    The organization structureof carbide is slight and neat. It has good distribution and symmetrical organization. And it also has good resistance to wear. As it is only the increase or decrease of carbon. It will not damage the high temperature characteristics and can be continuously and substantially alter the properties of the steel. It can do hot work and cold work and it has good machinability and polishing property

Chemical composition:

Steel grade	JISThe corresponding designation	Chemical composition ( % )
		C	Si	Mn	Cr	Mo	W	V
SKH9	SKH51	0.85	0.3	0.3	4	5	6	2

Heat treatment

Forging temperatur(°C)	Annealing	Quenching			Tempering		Hardness HRC
		To heat	Austenitizing	Coolant	Temperature	Tempering
1120~900cooling slowly	820~880cooling slowly in the stove	820~880cooling slowly	1210-1230	A.O.H	540-590	2-3	64-56

Use:

: drill, tap, reamer, circular saw, gear cutter, broach, planer etc.Die: all kinds of hot work, cold work die and punch, cutter, cutter, various gadolinium roll tool etc.

Specifications:

Varieties	Specifications (mm)	Condition of delivery
steel plate	(4-80mm)×(200-300mm)×(200-300mm)	Six grinding surfaces, HRC62-64
Flat steel	(10-90mm)×(100-600mm)	Black
Round bar	Diameter 2-200mm	Black or grinding

M42, High Speed Tool steel,forging round steel,alloy