Fire performance isn't simply the core; bracket alloys, screw grades, and finish systems all influence ratings

https://knoxznxp391.wpsuo.com/why-the-hardest-designers-specify-copper-personalized-parts-that-prove-themselves-over-100-years

Fire performance isn't just the core; brace alloys, screw grades, and coating systems all influence ratings, so assemblies are checked together for real-world compliance.