SPECIAL TREATMENT CAPABILITIES
ELECTROPOLISHING – Where conventional mechanical polishing of stainless steel tends to smear, bend, stress, and even fracture the crystalline metal surface, electropolishing offers the advantages of removing metal from the surface producing a unidirectional pattern that is both stress-free and occlusion-free, microscopically smooth, and often highly reflective. Additionally, improved corrosion resistance and passivation are achieved. It is used on medical devices, food processing equipment, and on valves and lines for corrosive gases used in manufacturing for the semi-conductor industry.
PASSIVATION – Although stainless steel alloys are highly resistant to corrosion, iron and iron contaminants, which can be imbedded onto the base material during fabrication, are subject to rust and corrosion under certain environmental conditions. These conditions can be remedied through acid passivation methods, which result in a less chemically reactive surface (passive). Danco offers both Nitric and Citric Acid passivation options, that are compliant with ASTM A967 and AMS 2700.
These stainless steel components
have been polished and then passivated
to inhibit atmospheric corrosive action,
and to help maintain its bright lustrous finish.
LOW FRICTION CHROME COATING – Fast becoming the finish of choice for medical manufacturers of instruments, Low Friction Chrome provides an improvement of service life, enhanced performance and preserves the cosmetic appearance of the medical device.
SPECIFICATIONS
PASSIVATION OF STAINLESS STEELS
AMS 2700 – Method 1 and 2
ASTM A967/A967M – All Nitric baths, as well as Citric 3 and 4.
ASTM A380
QQ-P-35 – All Types
AMS-QQ-P-35 – All Types
MIL-STD-171 – 5.4.1 – Passivate per AMS 2700 or ASTM A967
MIL-DTL-14072 – E300 – Passivate per ASTM A380.
MISCELLANEOUS SPECIFICATIONS
ASTM F86 – Standard Practice for Surface Preparation and Marking of Metallic Surgical Implants.
AS478 – Identification Marking Methods.
MIL-STD-130 – Identification Marking of U.S. Military Property.
MIL-STD-171 – Finishing of Metal and Wood Surfaces.
MIL-DTL-14072 – Finishes for Ground Based Electronic Equipment.
MIL-STD-753 – Sampling, Inspection and Testing for Surface Passivation.AMS-STD-753 – Sampling, Inspection and Testing for Surface Passivation