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Home  >>  Products  >>  Surface Profile  >>  Roughness Comparison Specimens
Roughness Comparison Specimens

Roughness Comparison Specimens

The measurement of surface roughness is not as straight forward as most other engineering measurements, such as length or angle or hardness; and in order to get good accuracy, expensive instruments are needed.

These are often unsuitable for workshop use, where roughness of machined surfaces can usually be assessed conveniently and with sufficient reliability using visual and tactile (fingernail) comparison with a standard set of surfaces machined in the same way.

These problems are solved by this range of Roughness Comparison Specimens. They are simple to use, inexpensive, and therefore widely used in many different applications.




APPLICATIONS TYPE 130 TYPE 013 PRICE LIST
 

 

Typical Applications

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  • Checking roughness of turned, milled, ground, reamed, polished or lapped parts during machining
  • Checking the roughness of spark-eroded surfaces as described in the VDI 3400 Guideline
  • Checking the roughness of steel surfaces which have been prepared for painting by blast-cleaning, as outlined in ISO 8503
  • Estimating surface roughness prior to accurate measurement by a stylus instrument, as recommended
    in BS EN ISO 4288, eg.
  • Checking the seriousness of damage to parts caused by nicks, dents and scratches
  • Checking reconditioned ship propeller blades
  • Made from 100% Nickel

 

Type 130

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Roughness Specimens

 
Composite Set of Roughness Specimens - This set consists of 30 comparison specimens, covering six commonly-used machining methods (6 turned, 6 end-milled, 6 horizontally milled, 6 surface-ground, 3 lapped, 3 reamed/drilled. A label gives the Ra and Rz values of each specimen in both metric and imperial units.

 

Item 013

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Item 013

 
Also available is Item 013: EDM finish scale to VDI 3400. This comparator scale has 12 specimens of spark-eroded (EDM) surfaces, with VDI Nos. 12-45 inclusive. A label on the rear face gives the Ra and Rz roughness values for each patch.

 

Prices

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Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Item Number Item Prices
SU-401130 Roughness Comparison Specimens, Type 130 $249.00
SU-402130 EDM Finish Scale, Type 013 110.00



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