Fire performance isn't just the core; bracket alloys, bolt grades, and coating systems all influence ratings

https://claytonofeu389.wpsuo.com/why-the-toughest-engineers-define-copper-custom-made-parts-that-prove-themselves-over-100-years

Fire efficiency isn't simply the core; bracket alloys, screw grades, and coating systems all influence rankings, so assemblies are checked with each other for real-world conformity.