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Update new tensile strength and proof loading machine for Screw Bolt and nut

Publish Time: 2022-02-21     Origin: Site

Samhotak update new universal tensile testing machine to test bolt and nut,tensile strength and proof loading.

Kinsom can take control those following items in house:

Go/no go plug gauge test (all test tools are calibrated by professional third party every year)

Dimension

Proof load test

Torsional strength test

Rockwell hardness

Superficial rockwell hardness

Vickers hardness

Brinell hardness

Micro hardness

Salty spray Test

According to the GB/T 3098.1 for Screw,Stud, bolt ,GB/T3098-2 for Nut

Thread

A  /mm⊃2;

Proof loading for Screw Bolt Stud Fp/N

Mechanical Properties Grade

5.8

6.8

8.8

9.8

10.9

12.9

M3

5.03

2620

3020

4020

4530

5230

5140

M3.5

3.78

3530

4070

5420

6100

7050

8270

M4

8.78

4570

5270

7020

7900

9130

10700

M5

14.2

7380

8520

11350

12800

14800

17300

M6

20.1

10400

12100

16100

18100

20900

24500

M7

28.9

15000

17300

23100

26000

30100

35300

M8

36.6

19000

22000

29200

32900

38100

44600

M10

58

30200

34800

46400

52200

60300

70800

M12

84.3

43800

50600

67400

75900

87700

103000

M14

115

59800

69000

92000

104000

120000

140000

M16

157

81600

94000

125000

14100

163000

192000

M18

192

99800

115000

159000

-

200000

234000

M20

245

127000

147000

203000

-

255000

299000

M22

303

158000

182000

252000

-

315000

370000

M24

353

184000

212000

293000

-

367000

431000

M27

459

239000

275000

381000

-

477000

560000

M30

561

292000

337000

466000

-

583000

674000

Thread

P

Proof loading for Nut Fp/N

Mechanical Properties Grade

5

6

8

10

12

M5

0.8

8250

9500

12140

14800

16300

M6

1

11700

13500

17200

20900

23100

M7

1

16800

19400

24700

30100

33200

M8

1.25

21600

24900

31800

38100

42500

M10

1.5

34200

39400

50500

60300

67300

M12

1.75

51400

59000

74200

88500

100300

M14

2

70200

80500

101200

120800

136900

M16

2

95800

109900

138200

164900

186800

M18

2.5

121000

138200

176600

203500

230400

M20

2.5

154400

176400

225400

259700

294000


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