Pickling passivation stainless steel pipe manufacturer in India
What is Passivated Stainless Steel Tubing?
Passivation is a process wherein nitric acid or citric acid is used for removing free iron from the surface of the stainless steel. Due to the treatment, the Passivated Stainless Steel Tubing comes with a protective oxide layer, also known as a passivation film. This layer makes it less likely for the passivating stainless steel pipe to chemically react with air, which might lead to corrosion. Thus, it can be said that the passivation process resists rust. The most widely used industry standards that represent passivated ss are ASTM A967 and AMS 2700. This is a post-fabrication practice that comes with benefits like:
Passivated Stainless Steel Tubing
Passivating stainless steel pipe supplier in Gujarat, view dimensions and price list
We can supply Passivated Stainless Steel Tubing in custom cut to required lengths
- The process helps in the formation of a chemical barrier against rust.
- The passivating process extends the life of the product.
- It helps to remove various contaminants from the surface of the product.
- It requires less maintenance.
ASTM A967 and AMS 2700
The ASTM A967 SS 304 Passivated Tubes allows the use of a mix of nitric acid and water. However, the ASTM A2700 default to the nitric acid formulations. It comes with a maximum concentration of iron, which cannot be found in the ASTM A967 standard. Also, the ASTM 2700 exempts 440C from testing. The ASTM A967 standard is more used by general industries, whereas ASTM A2700 is a standard use by the aerospace industry.
SS 304 Passivated Tubes supplier in India as per ASTM A967, AMS 2700 specification
What is the difference between nitric and citric passivation?
Compared to the nitric acid Pickling passivation stainless steel pipe, the citric passive products are more environmentally friendly. There is no emission of nitrogen oxide vapors, which contributes to smog, acid rain, and ozone layer depletion.
Also, citric acid is safer and does not require special handling or constant overseeing. It does not corrode other equipment. The citric acid 316 Stainless Steel Passivated Tubes are a newer concept than passivation by nitric acid.
Manufacturer of 316 Stainless Steel Passivated Tubes according to ASTM A380, ASTM A967, BS EN 2516, QQ-P-35C
Stainless steel tube passivation can be carried out in a variety of ways.
Nitric acid passivation is a widespread technique for passivating austenitic stainless steels like 304 and 316. A thin, protective oxide coating is formed as iron, and other surface contaminants are removed, making the material more corrosion-resistant.
Nitric acid passivation has many benefits, including its speed, efficiency, and ability to give stainless steel a uniform surface polish. This choice is not only accessible but also inexpensive.
Citric acid passivation has many benefits, including being less hazardous and better for the ecosystem. It also has less chance of discoloring or tarnishing the surface of stainless steel.
Stainless steel with complex geometries and hard-to-reach areas can be passivated with electrochemical passivation because it is a highly precise procedure. It also results in a very consistent surface finish for the substance.
