Physical Properties Guideline
Key factors in assessing overall durability of a fabric vary depending on the fabric construction.
Upholstery – Woven Fabrics
ASTM D3511 (Brush Pill), Class 3 minimum
ASTM D4970, (Martindale Tester), Class 3 minimum
Pilling is the formation of fuzzy balls of fiber on the surface of a fabric that remain attached to the fabric.
ASTM D5034 (Grab Test), 50 lbs. minimum in warp and weft
Breaking strength is the measurement of stress exerted to pull a fabric apart under tension.
ASTM D4034, 25 lbs. minimum in warp and weft
Seam Slippage is the movement of yarns in a fabric that occurs when it is pulled apart at a seam.
Upholstery – Coated Fabrics
Adhesion of Coating
ASTM D751 Sections 45-48, 3 lbf/in minimum
Adhesion of coating is the measurement of the force required to separate the coatings from the substrate.
ASTM D2261 (Tongue Tear) – Knits & Woven Substrates, 4 x 4 lbs
ASTM D5733 (Trap Tear) – Nonwoven Substrates & Nonwoven Composites, 15 x 15 lbs
Tear Strength is the measurement of stress exerted to rip the fabric under tension.
Hydrolysis Resistance – Applicable to Polyurethanes Only
ISO 1419 (Tropical Test Method C), 5 weeks
Visual Evaluation for no cracking, peeling or delamination
Hydrolysis resistance is the evaluation of a polyurethane fabrìc’s ability to withstand exposure to extended periods of heat and humidity.
Note: There is no direct correlation of testing weeks to years of service in the field.
Stretch & Set
ACT has chosen not to establish a minimum requirement for this performance characteristic since the ability of a fabric to return to its initial state is strongly impacted by factors that are attributed to furniture construction and fabrication, such as the density of foam. The SAE J855 test can be used to evaluate the stretch and set of a coated fabric; however, ACT suggests consulting both your fabric supplier and furniture manufacturer to determine if there are any potential issues.
Wrapped Panels and Upholstered Walls
ASTM D5034 (Grab Test), 35 lbs. minimum in warp and weft.
ASTM D434 for fabrics over 6 oz./sq. yard, 25 lbs. minimum in warp and weft.