302HQ Stainless Steel Wire Mesh – Alloy Overview
Type 302HQ stainless steel wire mesh is the same as Type 304 stainless steel wire mesh, except for the addition of 3-4% copper content. The addition of copper substantially reduces the cold work hardening rate. T-302HQ wire mesh is not used in cases where a higher work hardening rate is needed (T-304L wire cloth is commonly substituted), better resistance to pitting/corrosion is required in chloride environments (T-316L wire cloth is commonly substituted), or a lower cost material is required and reduced corrosion resistance is acceptable (T-430 wire cloth is commonly substituted). Some characteristics of 302HQ stainless steel wire cloth which dictate its use are:
- Austenitic stainless steel.
- Non-magnetic when annealed.
- Lowest work hardening rate vs. other common austenitic stainless steels.
- Virtually non-magnetic even after substantial cold work.
- Excellent toughness down to cryogenic temperatures.
- Corrosion resistance equal to or better than T-304 in broad range of industrial and chemical settings.
- Resists oxidation at 1600°F temperatures.
- Heating permitted between 800°F – 1600°F temperatures.
- Can be cut, formed, cold headed, and welded.
T-302HQ stainless steel wire cloth is principally used in the instance that cold heading of the wire cloth is required during the manufacturing process. As this requirement is relatively uncommon, other grades of stainless steel are purchased at a much greater frequency than T-302HQ wire cloth (i.e. T-304L, T-316L, T-430, etc.).