Cookware that can be used directly on a burner or under a broiler without damage.

resistant to catching fire

Refers to cookware that is resistant to fire and heat so that is can be safely used for cooking on top of a stove or for use in the oven.

not susceptible to burning; noncombustible; fireproof; -- of artifacts. Opposite of combustible.

(adj.) resistant to damage or burning on contact with flame; - flameproof transitive verb; - flameáproofáer noun (Date: 1886) (Merriam-Webster's Unabridged at www.m-w.com)

Material that is not readily ignited and does not produce flame under test conditions.