Cemented Carbide Composite Grades

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As the world's leading manufacturer of cemented carbide (tungsten carbide (WC)), Hyperion provides its customers our unique expertise in developing the correct combination of carbide and binding metal powder to optimize your roll application.

Cemented carbides are a range of composite materials, which consist of hard carbide particles bonded together by a metallic binder. The proportion of carbide is generally between 70 and 97% of the total weight of the composite, and its grain sizes average between 0.4 and 10 μm.

Hot Rolls Cemented Carbide Composite Grades_chart.JPG

 

Tungsten carbide (WC), the hard phase, together with cobalt (Co), the binder phase, forms the basic cemented carbide structure from which other types of cemented carbide have been developed.

Also, cemented carbides are produced that have the cobalt binder phase alloyed with, or completely replaced by, other metals such as chromium (Cr), nickel (Ni), molybdenum (Mo), or alloys of these elements.

Grades are applied according to performance requirements.

Hyperion composite rolls handle round, square and hexagonal bars, flat strips, rebars, angles and tubes. Pass life up to 20 times (and in some cases even 40) that of ordinary cast iron rolls.

Our tailor made solutions for each rolling mill are adapted according to its current requirements and productivity target. Each element of hot rolling demands specific composites to ensure optimal production. Suggested cemented carbide grades are listed below, and Hyperion's expert personnel are always available to make sure the perfect grade is engineered for you.

 

Physical and Mechanical Properties

 

Grade

Composition % by Weight

Average Cemented Carbide Grain Size (µm)

Density 

(g/cm3)

Hardness @ 20ºC

Transverse Rupture Strength [TRS] @ 20ºC (N/mm2)

Transverse Rupture Energy [TRE] (J)

Compressive Strength (N/mm2)

WC

Co binder

Mixed binder

HV30

HRA

C10C

90

 

10

Coarse (4)

14.5

1050

86.7

2900

3.0

3900

C15C

85

 

15

Coarse (4)

14.0

900

85.0

2900

3.8

3400

C20C

80

 

20

Coarse (4)

13.5

800

83.5

2700

5.0

3200

C25C

75

 

25

Coarse (4)

13.0

670

82.5

2700

6.0

3100

C30T

70

 

30

Extra coarse (5)

12.7

580

81.5

2700

8.0

3000

H6T

94

6

-

Extra coarse (5)

14.8

1250

89.0

2300

1.2

4300

 

 

Did you know you can recycle your cemented carbide with Hyperion?  Visit our recycling page or contact us for details.