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High Speed Steel
We supply good quality High Speed Steel products that can with stand very high temperatures. Our high speed steel bars of their fine quality are extensively used for cutting purposes. The high speed steel sheets are supplied by us at most feasible rates. This contributes to our praiseworthy stance among high speed steel in the country.We are on second position among the principal high speed steel suppliers India.
The term 'high speed steel' was derived from the fact that it is capable of cutting metal at a much higher rate than carbon tool steel and continues to cut and retain its hardness even when the point of the tool is heated to a low red temperature. Tungsten is the major alloying element but it is also combined with molybdenum, vanadium and cobalt in varying amounts. Although replaced by cemented carbides for many applications it is still widely used for the manufacture of taps, dies, twist drills, reamers, saw blades and other cutting tools.
For mordern industrial production, particularly mass production, machining is one of the most important shaping and forming processes. Almost all tools employed for this purpose are made from high speed steels.
In recent times, the use of high speed steels has also gained increasing importance for chipless shaping, eg. for extrusion, blanking and punching tools.
With regard to chemical composition, distinction made between W-, Mo- and W-Mo alloyed steel grades which, depending on the dominant stress they will be exposed to contain different amounts of carbon, vanadium and cobalt.
Applications
- High performance cutting tools (dies and punches), blanking and punching tools. Thread roling dies, drawing, deep drawing and extrusion tools. Cold rolls for multiple roll stands, measuring tools, plastic moulds.
- High performance cutting tools (dies and punches), blanking and punching tools. Thread rolling dies, drawing, deep drawing and extrusion tools. Cold rolls for multiple roll stands, measuring tools, plastic moulds.
- Cutting tools (dies and punches), blanking and punching tools. Thread rolling dies, shear blades.
- Highly stressed hot work tools such as mandrels, dies and containers for metal tube and rod extrusion; hot extrusion tools, tools for the manufacture of screws, nuts, rivets and bolts; die casting tools, forming dies; die inserts; hot shear blades.
- High stressed components with large cross sections for automotive and mechanical engineering, such as connecting rods, gear shafts, crank shafts, heavy forging such as rotors, shafts and discs.
- Components with large cross sections requiring high toughness and core strength, such as gears, crankshafts, heavy duty gear shafts in aircraft and truck construction and mechanical engineering, rock drill bits.
- Intake valves, stems for bi-metal valves.
- Highly stressed exhaust and intake valves.
The characteristic properties of all high speed steel grades includes
- High working hardness
- High wear resistance
- High retention of hardness and red hardness
- Excellent toughness
|
Type
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TYPICAL CHEMICAL COMPOSITION(%)
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HARDNESS
|
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Carbon
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Chromium
|
Tungsten
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Molybdenum
|
Vanadium
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Cobalt
|
Maximum
Annealed
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Typical
Tempered
|
|
C
|
Cr
|
W
|
Mo
|
V
|
Co
|
Hb
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HrC
|
|
M-2
|
0.83
|
4.15
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6.15
|
5.10
|
1.95
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~
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255
|
64
|
|
M-3
|
1.05
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4.15
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6.15
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5.75
|
2.50
|
~
|
255
|
66
|
|
M-4
|
1.30
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4.25
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5.85
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4.75
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4.10
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~
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255
|
65
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M-7
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1.02
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3.80
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1.80
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8.60
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1.90
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~
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260
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64
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M-42
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1.10
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3.90
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1.60
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9.50
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1.20
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8.25
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277
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67
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PM M-4
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1.40
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4.00
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5.65
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5.20
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4.00
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~
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255
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65
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PM T-15
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1.60
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4.00
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12.25
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~
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4.90
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5.00
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275
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66
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PM M-48
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1.50
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3.75
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9.75
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5.25
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3.10
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8.50
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310
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68
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PM-23
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1.28
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4.00
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6.40
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5.00
|
3.10
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~
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260
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64
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PM-30
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1.25
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4.20
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6.40
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5.00
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3.10
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8.50
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260
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65
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PM-60
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2.30
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4.20
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6.50
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7.00
|
6.50
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10.50
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340
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67
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PM A-11
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2.45
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5.25
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.5 Max
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1.30
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9.75
|
.5 Max
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255
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63
|
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