302HQ Stainless Steel: High-Quality for Cold Heading

 

What defines 302HQ's chemical composition?​

It contains 17-19% chromium, 9-11% nickel, low carbon (<=0.06%), and added copper (1.5-3.5%). The low carbon and copper additions improve cold formability, making it ideal for cold heading operations.​

 

How does 302HQ perform in cold heading processes?​

302HQ is highly ductile, resisting cracking during cold heading, threading, and forming. It maintains strength after forming, making it a top choice for high-quality fasteners like bolts and screws.​

 

It offers excellent corrosion resistance, similar to 304, with the low carbon content reducing carbide precipitation. It resists rust in atmospheric conditions and fresh water, suitable for outdoor fasteners.​

 

How does 302HQ compare to 304 in mechanical properties?​

302HQ has slightly lower tensile strength than 304 but higher ductility, with elongation up to 45%. This balance makes it better for cold forming while retaining enough strength for structural fasteners.​

 

What are 302HQ's typical applications?​

Commonly used in high-quality fasteners, including bolts, nuts, and screws, especially in automotive and construction. It's also found in precision parts requiring cold forming, where ductility and corrosion resistance are key.