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Tungsten carbide Balls

Tungsten carbide Balls

  • tungsten carbide pellets
  • tungsten carbide pellets
  • tungsten carbide pellets
tungsten carbide pelletstungsten carbide pelletstungsten carbide pellets

tungsten carbide pellets

 

 

Tungsten carbide balls/pellet and valve seats:

 

Compositions:

Tungsten carbide(WC) and Co or Ni or Mo additives.

 

Characteristic

 With high compression strength, excellent wear resistance and well shock and impact resistance, tungsten carbide balls and valve seats are widely supplied as ball rolling element in bearing industry, pump valve spool for fluid seal, check valve for petroleum digger, industrial sprayers to regulate the flow of fertilizers or pesticides to crops. 

 

Application:

Tungsten carbide balls can be also applied in a drastically different application, it can be employed as pen balls due to their inert chemical properties.  Besides, in miniature flow control devices, such as medical instrumentation and inkjet printing, tungsten carbide balls are also frequently used.


Grade

Allowable Ball

Deviation from

Surface Roughness Arithmetical Average

Basic Diameter Tolerance

Allowable Lot Diameter Variation

 Diameter Variation

 Spherical Form

3

0.0762μm

0.0762μm

0.0127μm

±0.762μm    

0.0127μm   (0.000005")

 (0.000003")

   (0.000003")

  (0.0000005")

        (±0.00003")

5

0.127μm   

0.127μm

0.02μm      

±1.27μm  

0.254μm            (0.00001")

   (0.000005")

   (0.000005")

   (0.0000008")

            (±0.00005")

10

0.254μm      

0.254μm  

0.0254μm   

±2.54μm

0.508μm     (0.00002")

   (0.00001")

      (0.00001")

 (0.000001")

             (±0.0001")

15

0.381μm           

0.381μm  

0.0254μm  

±2.54μm

0.762μm              (0.00003")

 (0.000015")

        (0.000015")

  (0.000001")

              (±0.0001")

16

0.4064μm        

0.4064μm  

0.0254μm

±2.54μm

0.8128μm             (0.000032")

     (0.000016")

          (0.000016")

    (0.000001")

             (±0.0001")

24

0.6096μm            

0.6096μm    

0.0508μm  

±2.54μm    

1.2192μm          (0.000048")

      (0.000024")

              (0.000024")

   (0.000002")

          (±0.0001")

25

0.635μm   (0.000025")

0.635μm   (0.000025")

0.0508μm     (0.000002")

±2.54μm              (±0.0001")

1.27μm          (0.00005")

48

1.2192μm          (0.000048")

1.2192μm          (0.000048")

0.0762μm      (0.000003")

±5.08μm              (±0.0002")

2.4384μm     (0.000096")

50

1.27μm         (0.00005")

1.27μm         (0.00005")

0.0762μm      (0.000003")

±7.62μm             (±0.0003")

2.54μm             (0.0001")

100

2.54μm            (0.0001")

2.54μm            (0.0001")

0.127μm               (0.000005")

±12.7μm                (±0.0005")

5.08μm           (0.0002")

200

5.08μm     (0.0002")

5.08μm     (0.0002")

0.2032μm                    (0.000008")

±25.4μm                 (±0.001")

10.16μm                        (0.0004")

300

7.62μm          (0.0003")

7.62μm          (0.0003")

 _

±25.4μm                     (±0.001")

15.24μm                 (0.0006")

500

12.7μm                (0.0005")

12.7μm                (0.0005")

 _

±50.8μm                (±0.002")

25.4μm               (0.001")

1000

25.4μm                 (0.001")

25.4μm                 (0.001")

 _

±127.0μm             (±0.005")

50.8μm             (0.002")

2000

50.8μm            (0.002")

50.8μm            (0.002")

 _

±127.0μm             (±0.005")

101.6μm           (0.004")

3000

76.2μm              (0.003")

76.2μm              (0.003")

 _

±127.0μm             (±0.005")

152.4μm    (0.006")

 

 

General Specification

 ASTM B 777-99

 

Class

_

1

2

3

4

Tungsten Nominal %

_

90

92.5

95

97

Density (g/cc)

_

16.85-17.25

17.15-17.85

17.75-18.35

18.25-18.85

Hardness (HRC) Max

_

32

33

34

35

Ultimate Tensile Strength

ksi

110

110

105

100

 _

Mpa

758

758

724

689

Yield Strength at 0.2% off-set

ksi

75

75

75

75

 _

Mpa

517

517

517

517

Elongation, %


5

5

3

2

AMS-T-21014

 

    _

Class 1

Class 1

Class 2

Class 2

Composition

90W7Ni3Fe

91W6Ni3Fe

92W5Ni3Fe

93W4Ni3Fe

Density (g/cm3)

17.1±0.15

17.25±0.15

17.50±0.15

17.60±0.15

Heat Treatment

Sintering

Sintering

Sintering

Sintering

Tensile Strength (MPa)

900-1000

900-1000

900-1100

900-1100

Elongation (%)

18-29

17-27

16-26

16-24

Hardness(HRC)

24-28

25-29

25-29

26-30

AMS-T-21014

Class 3

Class 3

Class 4

 _

Composition

95W3Ni2Fe

96W3Ni1Fe

97W2Ni1Fe

 _

Density (g/cm3)

18.10±0.15

18.30±0.15

18.50±0.15

 _

Heat Treatment

Sintering

Sintering

Sintering

 _

Tensile Strength (MPa)

920-1100

920-1100

920-1100

 _

Elongation (%)

42665

42602

42534

 _

Hardness(HRC)

27-32

28-34

28-36

 _

 



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