Different types of SS used in Pharma

Stainless Steel (SS) is one of the most used component in pharmaceutical industry, there are many use of SS mainly manufacturing equipment, pipelines, holding tanks

Stainless Steel are considered for product contact or product non-contact because of its strength.

Generally product contact SS are made up of SS316 or SS316L and product non-contact are made up of SS304.

SS316 or SS316L are nonreactive, non-leaching, non-shredding in character

Below are the comparision between SS304 SS316 & SS316L

  SS304 SS316 SS316L
Carbon 0.08 0.08 0.03
Manganese 2.00 2.00 2.00
Silicon 0.75 0.75 0.75
Chromium 18.00 16.00 16.00
Nickel 8.00 10.00 10.00
Molybdenum 2.00 2.00
Phosphorus 0.045 0.045 0.045
Sulfur 0.030 0.030 0.030
Nitrogen 0.10 0.10 0.10
Iron Bal Bal Bal

The difference in their structure is primarily the addition of molybdenum to 316 or 316L . Molybdenum further increases the corrosion resistance of the material, making it ideal for more acidic environments.

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