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Bourn & Koch Gear Shaping Machines

H.B. Carbide Tungsten Carbide Grades

Information:

The grades of carbide available from H.B. Carbide are shown in the chart belows 

Benefits:

APPLICATIONS

ISO CODE

INDUSTRY GRADE

HB GRADE

WC %

CO %

AVG. GRAIN SIZE (̀m)

HARDNESS ROCK WELL A

TRANSVERSE RUPTURE STRENGTH (psi)

General Purpose Semi-Finishing

K20

K30

K40

C-2

HB-2

94.0

6.0

1 – 1.5

92.2

440,000

Precision Finishing Sub-Micron Grade

K05

K10

C-3

HB-3

94.0

6.0

0.8

93.0

460,000

General Purpose Semi-Finsihing Sub-Micron Grade

K30

K40

C-10

HB-100

90.0

10.0

0.8

91.7

500,000

Low Impact Roughing Sub-Micron Grad

K40

C-12

HB-115

85.0

15.0

0.8

90.0

510,000

Low Impact Coarse Grain

 

C-13

HB-315

85.0

15.0

2.5

88.4

460,000

Medium Impact Coarse Grain

 

C-14

HB-320

80.0

20.0

2.5

86.4

450,000

High Impact Coarse Grain

 

C-14

HB-325

75.0

25.0

2.5

85.1

480,000

Impact Punches

 

C-12

HB-411

88.5

11.5

0.8 – 3.0

90.0

530,000

Download Supporting Documents:


Additional Information:

To receive additional information and/or to inquire on H.B. Carbide Tungsten Carbide Grades click here.



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