ISO 1302 DIN 4768 Comparison of Surface Roughness Values - Stainless Steel Tube
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ISO 1302 DIN 4768 Comparison of Surface Roughness Values
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DIN ISO 1302 and DIN 4768 are the Germany standard for surface roughness for various areas, including metal castings. The foll follow owin ings gs are are some ex explan planat atio ion n to to the the sym symbols bols and and com compari parison son to surface roughness values. Surf Surfac ace e Rou Roughness ess Sym Symbols ols
Exp Explan lanation ion
QUALIFICATION EQUIPMENTS
Symbol without additional indications. Basic symbol. The meaning must be explained by additional indications.
Production Equipment Equipment Inspection Equipment QUALITY&SERVICE
Symbol with additional indications. Any production method, with specified roughness.
Warranty Service INDUSTRY NEWS ENQUIRY US
Symbol without additional indications. Removal of material by machining, without specified roughness.
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Symbol with additional indications. Removal of material by machining, with specified roughness.
Symbol without additional indications. Removal of material is not permitted (surface remains in state as supplied).
Symbol with additional indications. Made without removal of material (non-cutting), with specified roughness.
Comparison of Roughness Values
DIN ISO 1302
Roughness Values Ra (um)
0.025 0.05 0.1 0.2 0.4 0.8
1.6 3.2
Roughness Values Ra (uin)
1
2
4
63 125 250 500 1000 2000
Roughness Grade Numbers
N1
N2
N3 N4 N5 N6
Roughness Va Values Rz Rz (um) from
0.1
0.25 0.4 0.8 1.6 3.15 6.3 12.5 25
8
16 32
N7 N8
6.3 12.5 25 N9 N10 N11 40
80
50 N12 160
ISO 1302 DIN 4768 Comparison of Surface Roughness Values - Stainless Steel Tube
DIN 4768
to
0.8
1.6
2.5 4.0 6.3 12.5 20 31.5 63
100 160
250
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Related References: 1. ISO 1302 DIN 4768 Comparison of Surface Roughness Values 2. Electrical Discharge Machining EDM Roughness Comparator 3. Polishing Polished Seamless Stainless Steel Pipe Tube 4. Stainless Steel Tubes Surface Roughness Review 5. Stainless Steel Bright Annealing/Annealed Tubes 6. China USA Surface Roughness Standard Comparison 7. Surface Roughness Conversion Chart of Stainless Steel Tube 8. Stainless Steel Tube Surface Finish Types 9. Cleaning of Stainless Steel Tubes 10. Post weld cleaning and finishing of stainless steels 11. Care and maintenance of stainless steel 12. British and American standards for tolerances, surface finish and testing of stainless steel 13. Surface Finish Degree Comparison Table between Rz Ra RMS ©Copyright Reserved Home | Site Map | Links | Directory | Advertise | Heat | Tools | Standard | Pressure | Hardness | Surface | Properties E-mail:
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