What is the RA of a 2B finish?

What is the RA of a 2B finish?

Depending on its gauge (thickness), factory-fresh 2B-finished stainless steel typically has an Ra value ranging from 0.3 micrometers (. 0003mm) to 1 micrometer (. 001mm). Proper electropolishing can decrease the Ra of the surface to between 4 and 32 microinches depending on the gauge (thickness) of the metal.

How do you calculate surface finish?

Surface Finish Calculator

  1. AA: Arithmetic Average (Ra)
  2. AA = (Feed2/(24*Rad))*1,000,000.
  3. RMS: Root Mean Square.
  4. RMS = AA x 1.11.

What Ra is mirror finish?

A smooth, shiny surface — a mirror finish — would produce an Ra measurement of around 6 to 12, while stainless-steel with a standard, brushed finish would likely produce a measurement of 20 to 30 Ra.

How to measure surface finish Ra?

– TECHNICAL DATA – SURFACE ROUGHNESS – EXCERPT FROM JIS B 0601 (1994) AND JIS B 0031 (1994) – Categories of Surface Roughness. Definitions and indications for surface roughness parameters (for industrial products) are specified.

How to measure surface finish?

Arithmetical mean roughness (Ra) A section of standard length is sampled from the mean line on the roughness chart.

  • Maximum peak (Ry) A section of standard length is sampled from the mean line on the roughness chart.
  • Ten-point mean roughness (Rz)
  • What is RA 63 finish?

    Ra is calculated as the Roughness Average of a surfaces measured microscopic peaks and valleys. RMS is calculated as the Root Mean Square of a surfaces measured microscopic peaks and valleys. Each value uses the same individual height measurements of the surfaces peaks and valleys, but uses the measurements in a different formula.

    What is a 63 surface finish?

    eMail author. Edit. RMA(RA) Stand for Root Mean Square(Roughness Average), it is a term used to measure the roughness of a surface,RMS 63 is a smooth surface finish, RMS 125 is an average manufacturing surface, RMS 25 is a very clean smooth surface finish.