Hebei Anwang Metal Wire Mesh Co., Ltd. · Anping, Hebei, China · since 2002 +86-133-2308-7345 [email protected]
Material Guide

Stainless Wire Mesh 304 Versus 316 and Why the L Grades Exist

Four alloys, three questions: what chemistry, what temperature, and will it be welded afterwards.

Type 304, the default

Type 304 is often referred to as 18-8, meaning 18% chromium and 8% nickel. It is the basic stainless alloy most commonly used for wire cloth weaving. It withstands outdoor exposure without rusting and resists oxidation at an elevated temperature up to 1400 degrees Fahrenheit.

Type 316, for chlorides and creep

Type 316 is an 18-8 alloy stabilised by the addition of 2% molybdenum. It has better resistance to pitting corrosion than the other chromium-nickel stainless steels where brines, sulphur-bearing water or halogen salts such as chlorides are present. A valuable property of 316 is its high creep strength at elevated temperatures. Wire cloth woven of 316 is used extensively in chemical processing where better corrosion resistance is required.

The L grades, for welding

Type 304L is very similar to 304, the difference being the reduced carbon content for better weaving and secondary welding characteristics. Type 316L stands in the same relationship to 316. If the cloth will be welded into a frame or an element after weaving, specify the L grade.

Everything else follows from the alloy

Mechanical properties and fabricating characteristics of 316 are otherwise similar to 304, so the choice really is about chemistry, temperature and welding rather than about strength.

How to pick in practice

Start with the chemistry. Chlorides, brines or sulphur-bearing water means 316. Then check whether anyone will weld the cloth after it leaves the loom; if so, move to the L grade. Only then choose mesh count and wire diameter from the specification table.

Do not skip the certificate

Alloy designation is the one property you cannot verify by eye on delivered cloth. Ask for the mill certificate at order stage when the application is pressure, food or pharmaceutical.

Every figure in this guide is taken from our own published product data. Where we have never published a number, this guide says so.
Related Product Images

Stainless Steel Wire Mesh in Our Own Photographs

FAQ

Quick Answers

What does 18-8 mean?

18% chromium and 8% nickel - the composition of type 304, and the base of type 316 as well.

What temperature can 304 handle?

It resists oxidation at elevated temperature up to 1400 degrees Fahrenheit.

Do I need 316L or is 316 enough?

316 is enough unless the cloth will be welded after weaving, in which case the reduced carbon of 316L gives better secondary welding characteristics.

Still Not Sure Which Specification You Need

Tell us the application rather than the part number. We will work back to the specification with you.