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Passivation coats metal in order to reduce the chemical reactivity of the surface area. For stainless steel parts, passivation removes the free iron from the surface to prevent rust.

Locations providing Passivation

  • Portland
    Apex Anodizing (HQ)
    7015 NE Columbia Blvd.
    Portland, OR 97218
  • Sparks
    280 Coney Island Dr, Suite B
    Sparks, NV 89431

Passivation details

Note: tank sizes and max part sizes listed only apply to our Portland facility. Please call (775) 355-8121 for tank size details at our Sparks facility.
Tank size and max part size details for Passivation
Process Max Tank Size Max Part Size
Nitric Acid Passivate 24” x 24” x 36” 24” x 24” x 36”
Pickle Tank 60” x 36” x 48” 60” x 36” x 48”
Specification details for Passivation
Specification Type Specification
QQ-P-35C Type II
QQ-P-35C Type VI
QQ-P-35C Type VII
Mil-STD-171 5.4.1
Mil-STD-171 5.5.1
AMS 2700E (method 1 only): Type 1
Type 1
Type 2
Type 3
Type 4
Type 6
Type 7
ASTM A967 Nitric 1, Nitric 2
Nitric 1, Nitric 2
Practice A & D