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High Speed Steel Rolls

High speed steel alloys are high carbon alloy steel containing Cr, Mo, W, Co, V and Nb. Micro structure consist of complex carbides embedded in a tempered martensite.

These rolls and sleeves are doubled poured which is combined extra wear resistance of the shell together with toughness of the core.

High Speed Steel Roll grades are widely used as Hot Strip Mills F1-F4 work rolls, pre-finishing and finishing stands of wire bar and rebar mills.

 PDF

 

HSH 76C -Tempered Martensite with

 M7C3 and MC Carbides(x100

HSH 76C-Tempered Martensite with

 M7C3 and MC Carbides(x400)

 Chemical Composition and Mechanical Properties of High Speed Steel Rolls and Rings

Roll

Grade

Barrels

Hardness

(ShC)

C

(%)

Si

(%)

Mn

(%)

Cr

(%)

Ni

(%)

Mo

(%)

W

(%)

V+Nb

(%)

 

Composition, Hardness

 and Mechanical

 Properties of Core

Material

 

HS H 70 C

70

1.6-2.2

0.3-0.6

0.6-1.2

4.0-6.0

1.0-2.5

2.0-4.0

1.5-4.0

3.0-6.0

See core Material Info in link1

HS H 74 C

74

1.6-2.2

0.3-0.6

0.6-1.2

4.0-6.0

1.0-2.5

2.0-4.0

1.5-4.0

3.0-6.0

See core Material Info in link1

HS H 76 C

76

1.6-2.2

0.3-0.6

0.6-1.2

4.0-6.0

1.0-2.5

2.0-4.0

1.5-4.0

3.0-6.0

See core Material Info in link1

HS H 80 C

80

1.6-2.2

0.3-0.6

0.6-1.2

4.0-6.0

1.0-2.5

2.0-4.0

1.5-4.0

3.0-6.0

See core Material Info in link1

HS H 84 C

84

1.6-2.2

0.3-0.6

0.6-1.2

4.0-6.0

1.0-2.5

2.0-4.0

1.5-4.0

3.0-6.0

See core Material Info in link1

 

Note: On request, other roll grades not specified in the table can be produced. 

 

 

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Wednesday, 19 September 2018
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