Request a FREE Sample. Get a Shining Example Of Our Work – FREE  Sample Details.

At Allegheny Surface Technology we meet standards set by the following to better satisfy the needs and expectations of our customers.

Electropolishing Specification

ASTM B912 Standard Specification for Passivation of Stainless Steel Using Electropolishing
ASME BPE Bioprocessing Equipment

Passivation Specification

ASTM A967 Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts
ASTM A380 Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems
QQ-P-35C Federal Specification: Passivation Treatments for Corrosion-Resistant Steel (replaced by ASTM A967)
ASTM B912 Standard Specification for Passivation of Stainless Steel Using Electropolishing
ASTM B600 Standard Guide for Descaling and Cleaning Titanium and Titanium Alloy Surfaces

Whatever your surface finish requirements, AST is the one stop shop. New or used, your place or ours, we’ll finish the job in time for you to do yours.

Surface Finish Specification

Grit# Ra Microinch Mechanical Polish Ra Microinch Electropolish
60 80-140 60-130
80 50-75 30-65
120 35-45 20-40
150 25-40 15-35
180 20-30 10-25
240 15-25 8-20
320 10-20 5-18
400 <10 5-10
500 <7 3-7

Note: The chart above is to be used for reference only. Material and processes can and will affect results.