APPLICATION & MATERIAL GUIDE

SS 304L vs SS 316L for Piping

Both are low-carbon austenitic stainless grades. 316L contains molybdenum and generally offers better resistance to pitting in chloride-bearing environments, while 304L is widely used for general corrosion-resistant fabrication.

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YOUR QUESTION

Should I choose 304L or 316L stainless steel?

OPTION 1

SS 304L piping

Grade
TP304L · WP304L · F304L
Reference standard
A312 / A403 / A182

Cost-effective general corrosion-resistant family where the environment is suitable.

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OPTION 2

SS 316L piping

Grade
TP316L · WP316L · F316L
Reference standard
A312 / A403 / A182

Improved resistance in many chloride and chemical environments.

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INFORMATION REQUIRED

Confirm before selection

  • Chloride concentration and temperature
  • Cleaning chemicals and crevices
  • Welding and post-fabrication cleaning
  • Lifecycle cost and availability
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