The differences between types of stainless steel meshes are slight but important. The two most popular makes of mesh currently are the 0.8mm Marine Grade Stainless Steel Mesh and the 0.9mm 304 grade stainless steel mesh.

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Some companies claim the 304 grade stainless steel mesh is stronger than the 316 Marine Grade Stainless Steel Mesh because it is thicker, but INVISI-GARD 316 Marine Grade Stainless Steel Mesh proves them wrong as it gains its strength from its Ultra High Tensile wire (900 MPa) from which it is woven. Even thicker wires can be easily cut if they are of low tensile strength.

The main difference between meshes is in the tensile strength of the wire used to weave the strands of steel together. As the wire used in the INVISI-GARD mesh is of such high tensile strength, this process is made more difficult and results in an overall stronger product. The 316 mesh requires specialised weaving equipment to achieve the quality and flatness that is a hallmark of INVISI-GARD mesh. This explains why many cheap imported meshes either pass the knife-shear test but fail on weave quality and flatness, or pass on weave quality and flatness but can be cut like butter.

INVISI-GARD 316 Marine Grade Stainless Steel Mesh has been independently tested to Australian Standards and passes the AS5041-2008 for Knife-Shear test up to Australian Standards.

Grade 316 should be selected as a minimum within five kilometres of the surf.

Another difference between the 316 and 304 meshes is that the former is more resistant to corrosion. The less expensive grades (such as the 304) are more likely to become tea stained or even suffer more severe weathering.

Grade 316 has excellent corrosion resistance in a wide range of environments. Its main benefit over grade 304 is its improved ability to resist pitting and crevice oxidization. The 316 mesh resists ordinary rusting in virtually all architectural applications, and is often chosen for more aggressive environments such as sea-front buildings and coastal houses.

Grade 316 has virtually the same mechanical, physical and fabrication characteristics as 304 but with better corrosion resistance, particularly to pitting corrosion.

Dec. 26 , 2018

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What’s the difference between 304 and 316 stainless steel mesh?

A very common question that is asked what the significant difference between 316 Stainless Steel mesh and 304 Stainless Steel mesh? Let us start with a description of general Stainless Steel.

Stainless Steel is an alloy steel containing 12% or more chromium and is classified as resistant to rust and chemical attack. Stainless steel is also referred to as “Inox steel” this means it has an alloy with a chromium content of it least 12%.  It is used for any application that has to have the correct structural integrity and high resistance to oxidisation caused by harsh weather or environmental conditions.

Stainless Steel Wire Mesh( wire cloth )is divided into NO MAGNET NO NICKEL, AISI202, AISI302, AISI304, AISI 304 L, AISI 316, AISI 316 L, AISI317, 321 and 430 etc.

T-304 stainless steel is the most widely available of all stainless steels in the wire mesh industry. Aside from the countless combinations of mesh opening sizes and diameter wire available both from stock and through manufacturing, T-304 SS exhibits many benefits and is largely considered the standard of the industry. T-304 SS has excellent corrosion resistance in a wide range of environments and is used in a wide range of applications.
Often referred to as "18-8" ( 18% chromium, 8% nickel ) T-304 is the basic stainless alloy mostly commonly utilized for wire cloth weaving. It withstands outdoor exposure without rusting and resists oxidation at an elevated temperature up to 1400 degrees fahrenheit.

T-316 stainless steel is recognized as the second most widely available of all stainless steels in the wire mesh industry. T-316 stainless steel wire mesh is typically considered an alternative grade to T-304 stainless steel wire mesh and preferred in certain circumstances. Particularly, in marine environments and in applications requiring heavy welding, T-316 stainless steel is commonly specified due to its many benefits.

Stabilized by the addition of 2% molybdenum, T-316 is an "18-8" alloy.Type 316 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 T-316 is high creep strength at elevated temperatures. Other mechanical properties and fabricating characteristics are similar to T-304.
Wire cloth woven of T-316 has extensive use in chemical processing when better corrosion resistance is required than the regular chromium-nickel types.

The simple answer is 304 contains 18% chromium and 8% nickel while 316 contains 16% chromium, 10% nickel and 2% molybdenum. The molybdenum is added to help resist corrosion to chlorides (like sea water and de-icing salts).

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Contact us to discuss your requirements of stainless steel pre-crimp mesh. Our experienced sales team can help you identify the options that best suit your needs.