Passivation Services
NADCAP, FAA/EASA, & ASTM compliant passivation treatment for stainless steel components to maximize corrosion resistance and remove free iron contamination.
What is Passivation?
Passivation is a chemical treatment process that removes free iron and other contaminants from the surface of stainless steel parts while promoting the formation of a thin, transparent oxide layer that protects against corrosion.
This process is essential after machining, welding, or other fabrication operations that can introduce contaminants or damage the natural protective layer of stainless steel.
Key Benefits
- Enhanced corrosion resistance
- Removal of free iron contamination
- Formation of protective oxide layer
- Maintains material properties
- Meets ASTM and AMS specifications
Process Specifications
MIL-S-5002
AMS 2700
MIL-STD-171 (ORD)
MIL-STD-808 (USAF)
AMS-QQ-P-35
Common Applications
Landing gear components
Shock struts
Hydraulic cylinders
Aircraft engine parts
Industrial machinery
Passivation Methods
Citric Acid Passivation
Environmentally friendly citric acid process that effectively removes free iron while being safer for personnel and the environment.
- ASTM A967 compliant
- Environmentally preferred
- Safer for operators
Nitric Acid Passivation
Traditional nitric acid process for applications requiring specific military or aerospace specifications.
- ASTM A380 & A967 compliant
- Military spec approved
- Proven effectiveness
Our Passivation Process
1. Cleaning
Thorough cleaning to remove oils, greases, and other contaminants using appropriate cleaning agents.
2. Passivation Treatment
Immersion in citric or nitric acid solution at controlled temperature and duration per specification requirements.
3. Rinsing & Neutralization
Complete rinsing to remove all traces of passivation solution and neutralize any residual acids.
4. Testing & Documentation
Water break test, copper sulfate test (if required), and complete certification documentation.
Industry Specifications
ASTM A380
Cleaning & Descaling Stainless Steel
ASTM A967
Chemical Passivation Treatments
AMS 2700
Passivation of Corrosion Resistant Steel
Ready to Get Started?
Contact us today for expert passivation services with complete specification compliance and thorough documentation.