GB 8624 Fire test for grades of building materials

With the deepening and development of fire science and fire engineering, the connotation of combustion characteristics has been expanded from simple flame propagation and spread to include combustion heat release rate, combustion heat release amount, combustion smoke density and toxicity of combustion products and other parameters.

This standard is mainly a comprehensive evaluation of the flame retardant effect of building materials. According to the shape, material and use of materials, it can be divided into:(flat) building materials and products, flooring materials, tubular insulation materials, curtains, decorative fabrics for furniture products, wire and cable sleeves, enclosures and accessories for electrical equipment, foam for electrical appliances, furniture products, soft furniture and hard furniture, etc.

According to the index requirements in the standard, the combustion performance of the material is divided into four levels, A non-flammable, B1 non-combustible, B2 combustible, B3 flammable. Among them, the non-combustible material A is subdivided into two sub-levels, A1 and A2. In order to facilitate the corresponding reference with the European standard EN 13501-1, B1 is divided into two sub-levels, B and C, and B2 is divided into two levels, D and E. Material that does not reach grade E is grade F or B3!

GB 8624 Classification for burning behavior of building materials and products

GB 8624 Fire Test to Building material and products - Standard Brief

The Classification for burning behavior rule of building material and interior material used in specific in China, evaluation of burning behavior for material, guidance of fire safety design, supervision of fire safety, the implementation of fire protection design played an important role, resulting in social and economic benefits.

GB 8624 Fire Test to Building material and products - Products Classification

Floorings

Construction excluding Flooring

 Linear pipe thermal insulation products

Fabric for Curtain, Upholstery fabric

Wire duct, cable conduit and enclosures for electrical equipment

Cellular plastics for electrical equipment and furniture products

Upholstered furniture, Soft mattress and Hard furniture

 GB 8624 Fire Test to Building material and products - Reference Standard

GB/T 5464：Non-combustibility test method of building materials

GB/T 5907：Fundamental terminology of fire protection（mod ISO 13943）

GB/T 8626：Test method of flammability for building materials

GB/T 11785：Burning behaviour using a radiant heat source（idt ISO 9239-1）

GB/T 14402：Determination of the heat of combustion (neq ISO 1716)

GB/T 20285：Toxic classification of fire effluents hazard for materials

GB/T 20284：Single burning item test for building materials and products（SBI）

EN 13238：Conditioning Procedures and General Rules for Selection of Substrates

GB 8624 Fire Test to Building material and products – Similar standard

EN 13501-1: Fire classification of construction products and building elements-

BS 476: Fire tests on building materials and structures

GB 20286: Requirements and mark on burning behavior of fire retarding products

CASfire Technical Co.,Ltd have rich experience to provide GB 8624 Building material Fire Testing.

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From JJ2022