Roughness Comparison


This standard is based on the inspection of casting surface rough plating using the casting surface roughness comparison sample specified in (GB/T 15056-2017), as a reference for the selection of casting technology and casting surface roughness.

 

 

Material quality Technology Surface roughness(Ra)
0.2 0.4 0.8 1.6 2.5 3.2 6.3 12.5 25 50
Stainless steel Sand mould                    
Water glass melting mold                    
Silica sol melting mold                    
Aluminum alloy Sand mould                    
Silica sol melting mold                    
Die-casting                    
Copper alloy Sand mould                    
Silica sol melting mold                    
Steel/Aluminum/Copper Machining                

 

 

Roughness Comparison