EDM-finish-surface-standard-reference

VDI3400 Surface Finishes Meter And Inch Comparison List

  • EDM Mold Surface
  • VDI 3400 Texture
  • surface finish VDI 3400
  • VDI texture mold standards
  • VDI surface finish conversion

VDI

Ra

Aa

 

VDI

Ra

Ra

3400

µm

µinch

 

3400

µm

µinch

0

0.1

4

23

1.4

56

1

0.112

4.48

24

1.6

64

2

0.126

5.04

25

1.8

72

3

0.14

5.6

26

2

80

4

0.16

6.4

27

2.2

88

5

0.18

7.2

28

2.5

100

6

0.2

8

29

2.8

112

7

0.22

8.8

30

3.2

128

8

0.25

10

31

3.5

140

9

0.28

11.2

32

4

160

10

0.32

12.8

33

4.5

180

1 1

0.35

14

34

5

200

1 2

0.4

16

35

5.6

224

13

0.45

18

36

6.3

252

1 4

0.5

20

37

7

280

15

0.56

22.4

38

8

320

1 6

0.63

25.2

39

9

360

1 7

0.7

28

40

10

400

18

0.8

32

41

11.2

448

1 9

0.9

36

42

12.6

504

20

1

40

43

14

560

21

1.12

44.8

44

16

640

22

1.26

50.4

45

18

720

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