PROPERTIES OF TYPE II CLASS 1 (FG CLOTH) AND TYPE II CLASS 2 MIL SPEC DOD-I-24688
Description: FG Cloth is specified for use as TYPE II Class 1 MIL Spec DOD-I-24688 covering. It is a satin weave fiberglass fabric, coated with a white sizing. It’s developed as a vapour barrier facing for thermal insulation of ship’s bulkheads, structural stiffeners and air-conditioning ductwork, where a flame retardant covering is required. TYPE II Class 2 is ’FG Cloth’ fabric as per description above, with perforated face
| Test method | Index | Results | Results |
| English | Metric | ||
| ASTM-D-3776 | Weight | 13.5 oz/yd² +/- 10% | 4598/m² ± 10% |
| ASTM-D-1777 | Thickness | .016” +/- 10% | 0.40mm ± 10% |
| FED 191/5904 | Temsile strength | Warp – 300 lbs/in Min | 61.23 kg/cm |
| Fill – 255 lbs/in Min | 52.05 kg/cm | ||
| Construction | Warp- 48 +/- 2 | 19/cm ± 1 | |
| Fill- 32 +/- 2 | 13/cm ± 1 | ||
| FED 191/5904 | Tensile after 9000F | Warp- 70 | 14.29 kg/cm |
| Fill- 60 | 12.25 kg/cm | ||
| ASTM E-84 | Flame resistance | Flame Spread 5 | Smoke Developed 0 |
