ASTM E136 - Standard Test Method For Behavior Of Materials In A Vertical Tube Furnace At 750° C

September 6, 2021   -  

The International Building Code (IBC) and International Residential Code (IRC) prescribe ASTM E136 for materials that are required to be noncombustible. ASTM E136 uses a vertical tube furnace to expose building materials to a temperature of 750° C (1382° F).

While actual building fire exposure conditions are not duplicated with this test method, it “will assist in indicating those materials which do not act to aid combustion or add appreciable heat to an ambient fire.”,

How we run an ASTM E136.

Small test specimens (1.5″ by 1.5″ by 2.0″ ± 0.1″) are instrumented with two thermocouples: one placed on the specimen's outside surface and the other placed inside the center of the specimen. The instrumented specimen is placed into the vertical tube furnace set at 750° C.

A material is considered to pass (i.e., classified as non-combustible) if three of four test specimens meet the test method's requirements for weight loss (no more than 50%), temperature rise (no more than 30° C), and flaming (none after the first 30 seconds).


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