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Forged Steel Backup Rolls

The grades have 3% and 5% Chromium together with Molybdenum and Vanadium, differentially hardened to achieve bainitic to martensitic shell with spheriodized pearlitic core.

Chodan Sazan produces forged steel back up rolls for hot and cold strip mills. These rolls are used in continuous, Semi Continuous and Steckel Hot Strip Mills, also Tandem Cold Strip Mill and Temper Mills.

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SB H 62F- Tempered Martensite(x200) 

       

Mechanical Properties

Mechanical Properties

Barrel

Neck

U.T.S (N/mm)2

1300-1800

700-1300

Yield Strength (N/mm)2

1200-1500

630-1050

Bending  Strength (N/mm)2

2500-3000

1000-1500

Elongation %

6-12

12-22

  

 

Roll

Grade

Barrels

Hardness

(ShC)

C

(%)

Si

(%)

Mn

(%)

Cr

(%)

Mo

(%)

V

(%)

SB H 62 F

62

0.52-0.62

0.2-0.5

0.3-0.7

3.0-3.3

0.3-0.6

0.1-0.3

SB H 64 F

64

0.52-0.62

0.2-0.5

0.3-0.7

3.0-3.3

0.3-0.6

0.1-0.3

SB Mo H 64 F

64

0.55-0.65

0.2-0.5

0.3-0.7

3.0-3.3

0.6-1.0

0.1-0.3

SB Mo H 66 F

66

0.55-0.65

0.2-0.5

0.3-0.7

3.0-3.3

0.6-1.0

0.1-0.3

SB Cr H 66 F

66

0.45-0.55

0.2-0.5

0.3-0.7

5.0-5.3

0.3-0.6

0.1-0.3

SB Cr H 68 F

68

0.45-0.55

0.2-0.5

0.3-0.7

5.0-5.3

0.3-0.6

0.1-0.3

SB Cr Mo H 70 F

70

0.5-0.6

0.2-0.5

0.3-0.7

5.0-5.3

0.6-1.0

0.1-0.3

SB Cr Mo H 72 F

72

0.5-0.6

0.2-0.5

0.3-0.7

5.0-5.3

0.6-1.0

0.1-0.3

 

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

 

 

ChodanSazan Manufacture Of Cast Rolls & Sleeves, All rights reserved.
19.10.2018
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