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General Information, Facts & Tables
[Production Method Roughness]

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Overview

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The following table lists the absolute and normal, minimum and maximum surface roughness (in micro inches) when a material is cut / machined by a specific process.
 

Roughness Table

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Process

Absolute
Min

Normal
Min

Normal
Max

Absolute
Max

Flame Cutting

2000

1000

500

250

Snagging

2000

1000

250

125

Sawing

2000

1000

63

32

Planing

1000

500

63

16

Shaping

1000

500

63

16

Drilling

500

250

63

32

Chemical Milling

500

250

63

32

Electrical Discharge Machining

500

200

60

32

Milling

1000

250

32

8

Broaching

250

125

32

16

Reaming

250

125

32

16

Boring

1000

250

16

2

Turning

1000

250

16

2

Barrel Finishing

125

32

8

2

Electrolyte Grinding

32

25

8

4

Roller Burnishing

32

16

8

4

Grinding

250

63

4

1

Honing

63

32

4

1

Polishing

32

16

4

0.5

Lapping

32

16

2

0.5

Superfinishing

32

8

2

0.5

Sand Casting

2000

1000

500

250

Hot Rolling

2000

1000

500

250

Forging

1000

500

125

63

Permanent Mold Casting

250

125

63

32

Investment Casting

250

125

63

16

Extruding

500

125

32

16

Cold Rolling

250

125

32

8

Cold Drawing

250

125

32

8

Die Casting

125

63

32

16