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Semi High Speed Steel Rolls

Semi High Speed Steel Rolls.

The microstructure consists of tempered martensite Chromium carbides and dispersion of fine secondary carbides.

These rolls have excellent thermal shock and wear resistance.

Semi High Speed Steel rolls mostly used for roughing and F1-F4 stands of Hot Strip Mills and finishing stands of small section mills and universal rings of section mills.

 PDF

SSH72C -Tempered Martensite with

 M7C3 and M23C6 Carbides.(x100)

SSH72C -Tempered Martensite with           

M7C3 and M23C6 Carbides.(x400)

                           

 

 

 

 

 

 

 

 

 

Chemical Composition and Mechanical Properties of Semi High Speed Steel Rolls

Roll

Grade

Barrels

Hardness

(ShC)

C

(%)

Si

(%)

Mn

(%)

Cr

(%)

Ni

(%)

Mo

(%)

W

(%)

V+Nb

(%)

Composition,

 Hardness and

 Properties of

Core Material

SS H 72 C

72

0.3-1.0

0.4-1.0

0.3-1.0

0.5-8.0

0.2-1.2

2.0-4.0

0.8-1.5

0.2-1

See core Material Info in link1

SS H 74 C

74

0.3-1.0

0.4-1.0

0.3-1.0

0.5-8.0

0.2-1.2

2.0-4.0

0.8-1.5

0.2-1

See core Material Info in link1

SS H 76 C

76

0.3-1.0

0.4-1.0

0.3-1.0

0.5-8.0

0.2-1.2

2.0-4.0

0.8-1.5

0.2-1

See core Material Info in link1

SS H 78 C

78

0.3-1.0

0.4-1.0

0.3-1.0

0.5-8.0

0.2-1.2

2.0-4.0

0.8-1.5

0.2-1

See core Material Info in link1

 

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

 

 

 

 

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18.12.2018
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