US lawCaliforniaStatutesCode hscDivision 8Part 5Chapter 19510Cal. HSC § 9510Cal. HSC § 9510Last amended: 1955Year: 2025Length: 16 wordsOfficial source “Incombustible Material” means and includes any material having an ignition temperature higher than 1,000 degrees Fahrenheit.PreviousCal. HSC § 9509NextCal. HSC § 9511