M2 Tool Steel / Skh51 / W6mo5cr4V2 / 1.3343 High Speed Steel

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Stainless Steel Scrap
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Polished
• Model NO.: round bar
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Transport Package: Wooden
• Specification: 6-400mm
• Trademark: Smooth
• Origin: China
• HS Code: 7214100000
• Production Capacity: 5000ton/Year

Product Description

M2 Tool Steel / SKH51 / W6Mo5Cr4V2 / 1.3343 High Speed Steel
AISI M2 Tool Steel is typical Mo High Speed Steel. HSS M2 is molybdenum series high speed steel, have the advantages of small carbide inhomogeneity and high toughness. Easy to overheating, should strictly control the quenching heating temperature, the more strict protection for heat treatment.
Supply Range of SAE M2 Tool Steel HSS
M2 Steel Round Bar: diameter 6mm - 400mm
M2 Steel Plate: thickness 6 -500mm x width 200- 1400mm
M2 Steel Block: 210mm x 500-810mm
Chemical Composition of M2 Tool Steel Material

ASTM A681	C	Si	Mn	P	S	Cr	Mo	V	W
M2/ T11302	0.78~0.88	0.20~0.45	0.15~0.40	0.030 Max	0.030 Max	3.75~4.50	4.50~5.50	1.75~2.20	5.50~6.75
DIN 17350	C	Si	Mn	P	S	Cr	Mo	V	W
1.3343/ S6-5-2	0.86~0.94	≤0.45	≤0.40	0.030 Max	0.030 Max	3.80~4.50	4.70~5.20	1.70~2.00	6.00~6.70
GB/T 9943	C	Si	Mn	P	S	Cr	Mo	V	W
W6Mo5Cr4V2	0.80~0.90	0.20~0.45	0.15~0.40	0.030 Max	0.030 Max	3.80~4.40	4.50~5.50	1.75~2.20	5.50~6.75
JIS G4403	C	Si	Mn	P	S	Cr	Mo	V	W
SKH51/SKH9	0.80~0.88	≤0.45	≤0.40	0.030 Max	0.030 Max	3.80~4.50	4.70~5.20	5.90~6.70	1.70~2.1

M2 Tool Steel Material Equivalent and Related Speciations

USA	German	Japan	China	ISO
ASTM A681	DIN 17350	JIS G4403	GB/T 9943	ISO 4957
M32	1.3343	SKH51	W6Mo5Cr4V2	HS 6-5-2

SAE M2 Tool Steel Material Mechanical Properties
Hardness, Rockwell C (tempered at 621°C, quenched at 1204°C): 62 HRC.
Hardness, Rockwell C (quenched at 1204°C) ): 65 HRC

Forged of M2 HSS Steel metal material
At first, Pre-Heating to 650-750ºC,Then heat to forged temperature. Soak at 1204°C, ensure heat thorough. Then start forged, the forged temperature no low than 950ºC. After forging, cool slowly.

Heat Treatment of SAE M2 Steel
   M2 HSS Steel Annealing
At first, Slowly heat to 871ºC,then slowly Cool to 538ºC(1000ºF) in heat treatment furnace. Then cool in air. After annealing hardness HBS: 255 Max.
   M2 tool Steel Hardening
M2 steel having very high hardenability and should be hardened by cooling in still air. The use of a salt bath or controlled atmosphere furnace is desirable to minimize decarburization, and if not available, pack hardening in spent pitch coke is suggested.
   Quenching of HSS M2 Steel material
Quenching temperature / ºC | salt bath furnace: 1204
Quenching temperature / ºC | controlled atmosphere furnace: 1216
The heat preservation time/min: 5 ~ 15
Quenching medium: Oil cooling
Hardness: 65 HRC Min
  Tempering Of HSS M2 Tool Steel
Tempering temperature / ºC : 540-564
After tempering hardness HRC or higher: 65 Min

Application of Sae M2 tool Steel HSS
M2 is molybdenum series high speed steel, have the advantages of small carbide inhomogeneity and high toughness. Moreover, it is easy to overheating, should strictly control the quenching heating temperature, the more strict protection for heat treatment. Because of its hardness and wearability, used in the manufacture of cutting more difficult to cutting tool materials. Furthermore, M2 high speed steel with carbide orientation is bigger, so the more strict protection for heat treatment, is suitable for the mould vibration and shock loads.  Application as Cold forging die, precision die, pressure molding powder, etc., cutting tools, adding glass fiber plastic mould etc. So it is suitable for the mould vibration and impact loads, deep drawing mould, punching die. Metal cutting saw blade, cold heading and extrusion.

Quality Assured of Sae M2 Steel
Quality assured by ISO 9001:2008 quality management system. Our all M35 tool steel all had by SEP 1921-84 ultrasonic inspection (UT Test). Quality Grade: E/e, D/d, C/c.