ARMOROC STRUCTURAL CEMENT BOARD
published 9/29/15
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armoroc physical mechanical properties
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PHYSICAL & MECHANICAL PROPERTIES |
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PROPERTY |
VALUE |
STANDARD / REFERENCE |
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Modulus of Elasticity, psi (machine direction, dry) |
≥ 435,000 psi / 3000 Mpa |
ISO 8335 Standard* |
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Modulus of Rupture, psi |
2,611 |
ASTM C120 † |
|
Shear Strength, psi |
1,308.27 |
ASTM D732 † |
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Bending Strength, psi |
≥ 1,305 psi / 9 Mpa |
ISO 8335 Standard* |
|
Tensile Strength, psi (machine direction, dry) |
963.39 |
ASTM D1037 † |
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Compressive Strength, psi (machine direction, dry) |
2,937.96 |
ASTM D1037 † |
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Thermal Conductivity |
‘K’ value = 1.511 Btu / hr.ft 2.oF ‘R’ value = 0.669 o F.ft2.h / Btu |
ASTM C518 † |
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Linear Variation With Change In Moisture (from 50% to 90% relative humidity) |
Length=0.05%
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ASTM D1037† |
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Saturated Thickness Swelling (24-hour water immersion) |
Thickness = 1.5%
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ASTM D1037† |
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Dimensional Tolerances |
Length & Width:± 5mm Thickness 6mm to 12mm: ± 1.0 mm Thickness 12 to 20mm: ±1.5mm Thickness 20mm or greater: ± 2.0mm Thickness on calibrated product: ± 0.3mm Straightness of Edges (Length & Width): 1mm / m Squareness of Edges: 2mm / m |
ISO 8335 Standard* |
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Shear Diaphragm (19mm, ultimate shear) |
1,703 PLF (with glue) 1,000 PLF (w/out glue) |
ASTM E455 ‡ |
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Lateral Nail Resistance Max Load, lbf |
491.39 |
ASTM D1761 † |
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Nail Head Pull Through, lbf (dry) |
804.04 |
ASTM D1037 † |
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PH Value |
11 – 12 |
ISO 8335 Standard* |
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Density – Oven Dry |
≥ 62.4 lbs/ft3 |
ISO 8335 Standard* |
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Moisture Content (at 65% RH) |
6% – 12% |
ISO 8335 Standard* |
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Frost Resistance |
50 cycles, zero damage |
ISO 8335 Standard* |
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Formaldehyde Content |
Zero |
MSDS |
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Asbestos Content |
Zero |
MSDS |
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Rot & Termite |
Resistant to destruction |
Resistant / No Food Value |
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Surface Burning Characteristics |
CLASS A (0 Flame / 0 Smoke) |
ASTM E84/UL 723/ULC S102 |
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Noncombusitiblity |
10 Minutes |
ASTM E136 |
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UL Listed |
File # R25825 |
UL 723 |
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Fire Rated Floor & Roof Assemblies |
Yes – Refer to Test Reports |
UL & NYC MEA |
*These values are the minimum allowable performance requirements of ISO 8335 International Standard for CBPB. ARMOROC® is in compliance with the ISO 8335 Standard and performance shall be equal to or greater than values set forth by the standard.
† These values are from Bodycote Test Report 0606_M03551 R.3. Sep. 20, 2007, which was an evaluation test on 22mm thick Armoroc, uncalibrated boards. Performance of other thicknesses and finishes may vary but shall still meet or exceed the ISO 8335 Standard.
‡ Shear Diaphragm is reported in Ultimate Shear, allowing the engineer to apply the appropriate safety factor for wind, seismic as suggested by their preferred method of load calculation. Please refer to shear diaphragm test assembly for complete details.
1 ) All ARMOROC® installations must be designed and reviewed by a qualified architect or engineer. Panels perpendicular to supports. 3/4″ minimum for floors, subject to load table and building code limitations. Refer to installation specifications for additional information on proper use and installation of Armoroc.
2 ) This technical data sheet replaces all previously published technical data sheets or physical & mechanical property sheets