309 Stainless Steel Wire Mesh – Alloy Overview

Type 309 stainless steel wire mesh is a heat resistant alloy useful in temperatures up to 1700°F.  When higher operating temperatures are required, higher nickel alloys (i.e. see SS310, SS330, Inconel® 600, Incoloy® 800) are used in place of Type 309 stainless steel. Given its high chromium (~23%) and nickel (~12%) composition, T-309 stainless steel is highly corrosion resistant, has excellent resistance to oxidation, has outstanding heat resistance, and provides good strength at both room and elevated temperatures. Some characteristics of 309 stainless steel wire cloth which dictate its use are:

  • Austenitic stainless steel.
  • Non-magnetic when annealed.
  • Slightly magnetic when cold worked.
  • Withstands outdoor exposure without rusting.
  • Superior corrosion resistance vs. T-304 in broad range of industrial and chemical settings.
  • Resists oxidation at 1700°F temperatures.
  • Heating permitted between 1700°F – 2000°F temperatures.
  • Can be cut, formed, and welded.

Industries & Applications

T-309 stainless steel wire cloth is principally used with chemical processing equipment, heat exchangers, and oil field / refinery equipment due to its superior heat and corrosion resistance properties.  Additional industries and applications which commonly use T-309 stainless steel wire cloth include:

  • Aerospace
  • Automotive
  • Furnaces
  • Liquid Filtration & Particle Separation
  • Steam Piping
  • Sulfite Liquor Filters

Common Aliases

Type 309 stainless steel is also commonly referred to as:

  • T-309
  • SS309
  • UNS S30900
  • 25-12 stainless steel (23% chromium + 12% nickel)
  • SUS309 (Japan)

309 Stainless Steel Wire Mesh – Typical Chemistry

UNS S30900 - 309 Stainless Steel Wire Mesh - Typical Chemistry
309 Stainless Steel
ASTM A580Min000002212

Typical Standards

309 Stainless Steel Wire Cloth – Harmonized Tariff Codes: Chapter 73

Woven T-309 Wire Mesh:

  • 0-30 Mesh: 7314141000
  • 31-91 Mesh: 7314142000
  • 92+ Mesh: 7314149000

Welded T-309 Wire Mesh:

  • 3.937″+ Center-to-Center AND .1181″+ Wire Diameter: 7314200000
  • <3.937″ Center-to-Center OR <.1181″ Wire Diameter: 7314390000

Manufacture/Supply-to-Order Capability

Phoenix Wire Cloth can manufacture-to-order any combination of mesh opening size + wire diameter(s) to supply you with the woven or welded 309 stainless steel wire mesh, bolting cloth, milling cloth, or filter cloth that you require. In addition, we can slit, cut, punch, form, heat treat, powder coat, etc. T-309 wire mesh to deliver the exact material you require.

Call or email us for a quote today!

*INCONEL®  and INCOLOY® are registered trademarks of Special Metals Corporation.

*All alloy and company names are trademarks of their respective holders. Use of them does not imply affiliation or endorsement.