High speed tool steel

High-speed tool steel grade, chemical composition and main purpose high-speed tool steel grades and chemical composition

Brand

Chemical composition (mass fraction) (%)

C

Mn

Si

Cr

V

W

Mo

Co

W18Cr4V

O.70～O.80

O.10~

0.40

0.20~0.40

3.80~

4.40

1.00~

1.40

17.50~19.00

≤O.30



W18Cr4VC05

0.70～O.80

0.10~

O.40

O.20～0.40

3.75~

4.50

0.80~

1.20

17.50~19.00

0.40~1.00

4.25~

5.75

W18Cr4V2Co8

0.75～O.85

O.20～

O.40

O.20～0.40

3.75~

5.00

1.80~

2.40

17.50~19.00

0.50~1.25

7.00~

9.50

W12Cr4V5Co5

1.50~1.60

O.15~

0.40

O.15~0.40

3.75~

5.00

4.50~

5.25

11.75～ 13.00

≤1.00

4.75~

5.25

W6Mo5Cr4V2

0.80～O.90

O.15~

0.40

O.20～0.45

3.80~

4.40

1.75~

2.20

5.50~ 6.75

4.50~5.50



CW6Mo5Cr4V2

0.95~1.05

O.15~

0.40

O.20～ O.45

3.80~4.40

1.75~

2.20

5.50~ 6.75

4.50～ 5.50



W6Mo5Cr4V3

1.00~

1.10

O.15～O.40

0.20 to 0.45

3.75~

4.50

2.25~ 2.75

5.00~ 6.75

4.75~ 6.50



CW6Mo5Cr4V3

1.15~ 1.25

O.15~

0.40

O.20～

O.45

3.75~

4.50

2.75~

3.25

5.00~ 6.75

4.75~ 6.50



W2M09Cr4V2

0.97~1.05

0.15~

O.40

O.20～ O.55

3.50~

4.00

1.75~

2.25

1.40~ 2.10

8.2~ 9.20



W6M05Cr4V2Co5

O.80~

O.90

0.15~

O.40

O.20～

O.45

3.75~

4.50

1.75~

2.25

5.50~ 6.50

4.50～ 5.50

4.50~

5.50

W7M04Cr4V2C05

1.05~ 1.15

0.20 to 0.60

0.15~0.50

3.75~

4.50

1.75~

2.25

6.25～ 7.00

3.25~ 4.25

4.75~ 5.75

W2M09Cr4VC08

1.05~

1.15

O.15～O.40

O.15~

O.65

3.50~

4.25

0.95~

1.35

1.15~1.85

9.00~

10.00

7.75~

8.75

W9M03Cr4V

O.77～

O.87

0.20~0.40

O.20～

0.40

3.80~

4.40

1.30~

1.70

8.50~9.50

2.70~

3.30



W6M05Cr4V2Al

1.05~

1.20

0.15～O.40

0.20~

O.60

3.80~

4.40

1.75~2.20

5.50~6.75

4.50~

5.50

A10.80~1.20

Note: 1. The phosphorus and sulfur contents of all grades of steel are not more than 0.030%.

2. The residual copper content in the steel is not more than 0.25%, and the residual nickel content is not more than 0.30%.

3. The above contents all refer to the mass fraction.

High-speed tool steel hardness

Brand

Delivery hardness HBS≤

Sample heat treatment system and quenching and tempering hardness



Other processing methods

annealing

Preheating temperature / °C

Quenching temperature / °C

Quenching agent

Tempering temperature / °C

HRC≥

Salt bath furnace

Box furnace

W18Cr4V

269

255

820-870

1270~1285

1270～ 1285

oil

550～570

63

W18Cr4VCo5

285

269

820-870

1270~1290

1280～1300

oil

540～560

63

W18Cr4V2Co8

302

285

820-870

1270~1290

1280～1300

oil

540～560

63

W12Cr4V5Co5

293

277

820-870

1220～1240

1230～1250

oil

530～550

65

W6Mo5Cr4V2

262

255

730-840

1210~1230

1210~1230

oil

540～560

63 (box furnace)

64 (salt bath furnace)

CW6Mo5Cr4V2

269

255

730-840

1190~1210

1200~1220

oil

540～560

65

W6Mo5Cr4V3

269

255

730-840

1190~1210

1200~1220

oil

54O～560

64

W18Cr4V

269

255

820-870

1270~1285

1270~1285

oil

550～570

63

CW6Mo5Cr4V3

269

255

730-840

1190~1210

1200~1220

oil

540～560

64

W2Mo9Cr4V2

269

255

730~S40

1190~1210

1200~1220

oil

540～560

65

W6Mo5Cr4V2C05

285

269

730-840

1190~1210

1200~1220

oil

540～560

64

W7M04CrV2Co5

285

269

730-840

1180～1200

1190~1210

oil

530～550

66

W2M09Cr4VC08

285

269

730-840

1170～1190

1180～1200

oil

530～550

66

W9M03Cr4V

269

255

820-870

1210~1230

1230～1240

oil

540～560

63 (box furnace)

64 (salt furnace)

W6Mo5Cr4V2Al

285

269

820-870

1230～1240

1230～1240



540~S60

65

Note: When the tempering temperature is 550~570%, tempering 2 times, each time lh; when the tempering temperature is 540~560°C, tempering 2 times, each time 2h; tempering temperature

When the degree is 530 ~ 550 ° C, temper 3 times, each time 2h.

Characteristics and applications of high speed tool steel

Brand

Main characteristics

Application examples

W18Cr4V

It has good thermosetting properties. At 600 °C, it still has high hardness and good machinability. It has good grinding processability, low quenching and overheating sensitivity, and higher heat resistance than alloy tool steel. However, due to the coarse carbide, the strength and toughness decrease with the increase of the material size. Therefore, it is only suitable for manufacturing tools, and is not suitable for manufacturing thin blades or large cutters.

Widely used in the manufacture of various tools for processing medium-hard or soft materials, such as turning tools, milling cutters, broaches, gear cutters, taps, etc.; also can be used to make cold-working dies, and can also be used to manufacture bearings and springs that work at high temperatures. Wear-resistant, high temperature resistant parts

W18Cr4VC05

Cobalt-containing high-speed steel, with good high temperature hardness and hot hardness, high wear resistance, high quenching hardness, surface hardness up to 64 ~ 66HRC

It can manufacture a variety of tools for high-speed cutting with high hardness, such as hobs, turning tools and milling cutters, as well as machining tools for automated machine tools.

W18Cr-4V2C08

Cobalt-containing high-speed steel, its high temperature hardness, hot hardness and wear resistance are better than W18Cr4VC05, but the toughness is reduced, the quenching hardness can reach 64 ~ 66HRC (surface hardness)

Can be used to manufacture a variety of tools with high hardness and high cutting force, such as milling cutters, hobs and turning tools.

W12Cr-4V5C05

High carbon and high vanadium cobalt-containing high-speed steel, with good wear resistance, high hardness, good anti-tempering stability, high temperature hardness and hot hardness, therefore, high working temperature, working life compared with other high-speed steel Double improvement

Suitable for processing difficult materials, such as high-strength steel, medium-strength steel, cold-rolled steel, cast alloy steel, etc., suitable for making turning tools, milling cutters, gear cutters, forming tools, thread processing tools and cold-working dies, but not suitable For the manufacture of high-precision complex tools

W6M05Cr4V2

It has good thermosetting and toughness, and the surface hardness after quenching can reach 64-66HRC. This is a molybdenum-containing low-tungsten commercial steel with low cost. It is a high-speed tool steel which is widely used after W18Cr4V.

Suitable for manufacturing drills, taps, dies, milling cutters, gear cutters, cold work dies, etc.

CW6Mo-5Cr4V2

After quenching, its surface hardness, high temperature hardness, heat resistance and wear resistance are improved compared with W6Mo5Cr4V2, but its strength and impact toughness are lower than W6M05Cr4V2.

Used to manufacture tools with high cutting performance, such as broaches, reamers, hobs, reamers, etc.

W6M05Cr4V3

It has the advantages of fine carbide uniformity, high toughness, good plasticity, etc., and wear resistance is better than W6M05Cr4V2, but it has poor grindability and is easy to oxidize and decarburize.

Can produce all kinds of general tools, such as turning tools, planing knives, taps, drills, forming cutters, broaches, hobs, thread combs, etc., suitable for processing medium and high strength steel, high temperature alloys and other difficult materials. Due to poor grindability, it is not advisable to make high-precision complex tools

CW6Mo-5Cr4V3

High carbon molybdenum high vanadium high speed steel, which is based on W6M05Cr4V3, which increases the average carbon content Wc from 1.05% to 1.20%, and correspondingly increases the vanadium content to form a steel grade, steel wear resistance better

Use the same as W6M05Cr4V3

W2Mo9Cr4V2

It has high thermosetting, toughness and wear resistance, low density, excellent grindability, and good effect when cutting general materials.

For making milling cutters, forming tools, taps, saw blades, turning tools, broaches, cold stamping dies, etc.

W6Mo5Cr-4V2C05

High-speed steel with drill, good high temperature hardness and hot hardness, good machinability and wear resistance, low strength and impact toughness

Can be used to make a variety of tools for processing hard materials. Such as gear cutters, milling cutters, punches, etc.

W7Mo4Cr-4V2Co5

On the basis of W6Mo5Cr4V2, 5% cobalt (Wco) was added to increase the carbon content and adjust the content of tungsten and molybdenum. The red hardness and high temperature hardness of the steel are improved, and the wear resistance is improved. Steel has good cutting performance but low strength and impact toughness

Generally used in the manufacture of gear cutters, milling cutters, and tools such as punches and cutter heads for cutting hard materials.

W2Mo9Cr-4VC08

High carbon cobalt-containing super-hard high-speed steel with high room temperature and high temperature hardness, high heat hardness, good grindability and sharp edge

Suitable for making all kinds of high-precision and complex tools, such as forming cutters, precision broaches, special drills, turning tools, cutter heads and inserts, for processing difficult alloys such as high-temperature alloys, titanium alloys, ultra-high-strength steels, etc. Get good results

W9M03-Cr4V

Tungsten and molybdenum universal high speed steel, strong versatility, comprehensive performance over W6M05Cr4V2, and low cost

Manufacture of various high speed cutting tools and cold and hot molds

W6M05-Cr4V2A1

Aluminum-containing super-hard high-speed steel with high heat hardness, high wear resistance, good thermoplasticity, high temperature hardness and long working life

Suitable for processing all kinds of difficult-to-machine materials, such as high-temperature alloy, ultra-high-strength steel, stainless steel "target=_blank> stainless steel, etc., can be used to make turning tools, boring tools, milling cutters, drill bits, gear cutters, broaches, etc.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn

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