PHYSICAL CHARACTERISTICS: (minimum as per ASTM C1355 / C1381)

Shell Thickness 1/4” Nominal Standard (+/-1/8” / Unit) [6mm (+/-3mm] {1/2” min. at edges}
Glass Fiber 6% min. (by Weight) (Volumetric measurements not valid)
Weight 1.5 – 2.0 (lbs/ft2) [7 – 10 (kg/m2)] (varies with embedment/reinforcement)
Strength Flexural:
Modulus of Rupture (MOR) 3200 ~ 3500 (PSI) [22 – 24 (Mpa)]
Flexural Modulus of Elasticity 1.3 ~ 1.9 x 106 (PSI) [1.3 – .9 x 107 (kPa)]
Ultimate Tensile (UTS) 1800 ~ 2000 (PSI) [12 – 14 (Mpa)]
Modulus of Elasticity 2.7 – 3.8 x 106 (PSI) [1.9 – 2.6 x 107 (kPa)]
Comprehensive Strength 7200 – 8300 (PSI)
Thermal Conductivity 4.0 – 4.2 (BTU/in/hr/ft2 /0F) [22.7 – 23.8 (W/m2 0C)]
Thermal Expansion Coefficient 8 x 10-6 (in/in/0F) [14 x 10-6 (mm/mm/0C]
Fire ASTM E84-80 (Incombustible Building Material) Flame, Fuel = 0, Smoke = 0
Toxicity (NBS Certification MEA 42-82) = 0
Density (Dry) 105 – 114 (PCF) [1680 – 1826 (kg/m3)]
Hardness 95 RH (min.) (Rockwell Scale)
Tolerances
Fabrication Dimensional – all directions +/- 1/8”
Warpage or Bowing +/- 1/16” /foot
Square / Skew /Diagonal +/- 1/8” in 10’
Out of Round +/- 1/16” / foot of diameter
Installed Humidified Deflection: 1/8” max (Industry standard)

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