Scope:

This specification covers rigid, structural, closed cell foam (see 6.1).

Classification:

The foam to be of the following types and classes:

Type IFor processing up to temperatures of 250°F (121°C)

Class 1 2.0 lbm / ft³ (32.0 kg/m³) density, nominal

Class 2 3.2 lbm / ft³ (51.3 kg/m³) density, nominal

Class 3 4.7 lbm / ft³ (75.3 kg/m³) density, nominal

Type II For processing up to temperatures of 350°F (177°C) after post-curing (see 6.4)

Class 2 3.2 lbm / ft³ (51.3 kg/m³) density, nominal

Class 3 4.7 lbm / ft³ (75.3 kg/m³) density, nominal

Class 4 6.9 lbm / ft³ (110.5 kg/m³) density, nominal

Class 5 12.8 lbm / ft³ (205.0 kg/m³) density, nominal

Class 6 18.7 lbm / ft³ (299.5 kg/m³) density, nominal