Stainless Steel Passivation


Stainless Steel Passivation - Surgeon Tools

Stainless steel passivation is a process that makes stainless steel even less susceptible to corrosive environmental factors, such as air and water. While stainless steel is corrosion-resistant by nature, it is not entirely impervious to rusting. Iron embedded in the surface during part forming and machining can corrode and create rust spots on the stainless steel, called rouging.

In stainless steel passivation, exogenous iron and/or iron compounds are removed from a stainless steel surface. Passivating improves the condition of part surfaces by removing surface contaminants in a chemical bath. This chemical bath fully dissolves the embedded iron without significantly affecting the stainless steel. After the parts have been run through the passivation bath, a passive film forms almost instantly. This passive film further improves stainless steel's natural corrosion resistance.

Request a quote on stainless steel passivation. Contact Arrow Cryogenics to learn more.

Benefits of Stainless Steel Passivation

  • Improved corrosion resistance without plating
  • Superior surface cleanliness
  • Eliminates iron contamination reactions with other materials
  • No discoloration from rust
  • No dimensional change

Passivation & Cleaning Specifications 

Arrow Cryogenics certifies to many passivation and cleaning specifications, including, but not limited to:

AMS 2700
ASTM B912
ASTM B849
MIL-STD-753B
1E4347

MIL-STD-753C
ASTM F86
AMS-QQ-P-35
MIL-STD-753C
1E2860

ASTM A380
CGA G-4.1
MIL-S-13165C
MIL-STD-808A
JDS-G169
ASTM B117
MIL-F-14072D
MIL-STD-171D
WS19168A
A967

Please contact Arrow Cryogenics to inquire about other specifications. We can meet the requirements of almost any customer or industry-standard specification.

Testing for Free Iron 

After parts have been passivated, Arrow Cryogenics tests the surface for free iron. We use a variety of tests to detect free iron, including high humidity testing, salt spray testing, and copper sulfate testing. 

Certification 

When requested, Arrow Cryogenics will provide certification of passivation and testing.

Request a quote on stainless steel passivation for your parts and components, or contact Arrow Cryogenics for more information.