302HQ Stainless Steel: High-Quality Austenitic for Fasteners

 

What defines 302HQ's chemical composition?​

It contains 17-19% chromium, 8.5-10.5% nickel, 3-4% manganese, and carbon <=0.06%. The balanced alloying and low carbon enhance cold formability, critical for shaping bolts, screws, and nuts without cracking.​

 

How does 302HQ perform in cold working?​

302HQ excels in cold heading and threading, with high ductility that allows for severe deformation during fastener production. It work-hardens gradually, maintaining toughness even after extensive cold forming.​

 

It offers corrosion resistance similar to 304, performing well in atmospheric conditions and mild chemicals. The low carbon content reduces the risk of intergranular corrosion, making it suitable for outdoor fasteners.​

 

How does 302HQ compare to 304 in applications?​

302HQ replaces 304 in fastener production, where its superior cold formability prevents cracking during threading. 304 remains better for structural parts needing higher tensile strength.​

 

Where is 302HQ commonly used?​

Found in high-quality bolts, screws, and nuts for automotive, construction, and electronics. It's also used in precision fasteners requiring consistent performance and corrosion resistance.