Identify the question
“A1”, “heat resistant” and “peak temperature” describe different questions. Keep classification, test method and operating conditions separate. Read any A1 designation with its classification standard, edition and product description; identical lettering does not establish equivalence between systems.
Tests have defined purposes
ISO 1182:2020 concerns non-combustibility testing; ISO 1716:2018 concerns gross heat of combustion [1][2]. BS EN 13501-1:2018 classifies products using reaction-to-fire data [3]. These references alone do not state a fabric’s continuous service temperature.
Describe thermal exposure
Record source temperature, direct contact or radiation, duration, repetition and the item being protected. Fabric, coating, thread and accessories may impose different constraints. Enter continuous and brief exposure separately and request evidence for the offered model.
Separate fabric and assembly
A fabric-sample result does not automatically describe an insulation jacket, welding blanket or curtain system. Review layers, seams, fixings and moving parts at assembly level. Use tested information for selection without extending it to unverified applications.
Use three specification fields
Record fire classification and standard, service temperature and conditions, and assembly acceptance requirements in separate fields. Leave missing information open for confirmation instead of deriving it from another field. This makes supplier comparisons and technical discussions more precise.