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4.1 Performance Requirements
| Property | Unit | Requirement | Result | |
|---|---|---|---|---|
| Material variability | flexural strength | F-statistic | 10 boards from each of 4 production batches | Pass |
| density | F-statistic | 10 boards from each of 4 production batches | Pass | |
| chemistry | N/A | X-ray diffraction | Pass | |
| atomic % | X-ray fluorescence | Pass | ||
| Leachate pH | pH | pH > Gypsum board or 6, whichever is greater | 8-9 pH | |
| Free chloride ion leachate (weight of board mass) | % | If > 0.1%, corrosion resistant fasteners required | 7 | |
| Vicker's hardness | MPa | ASTM E384 report value | Varies 40-150 | |
| Fastening – staples (16 gauge SS316 staples, 11 mm wide × 38 mm in length) | – | Install panels on a 12 ft. × 8 ft. wood frame and observe if breakage after 95% are installed | Pass | |
| Flexural strength of immersed samples | MPa | Average residual strength after immersion from each lot ≥ 90% of average strength of as-received material. The residual strength after immersion of each specimen must be ≥ 80% of average strength of as-received material. ASTM C293 | Pass | |
| Flexural strength of samples exposed to construction moisture (e.g., rain) | MPa | Average loss in strength of all MgOCl samples £ Average loss in strength of NBC benchmark (e.g., exterior gypsum) | Pass Footnote (1) | |
| Water vapour permeance | ng/Pa·s·m2 | ASTM E96, desiccant method > 170 ng/Pa×s·m2 | 300 | |
| Air permeance | L/s×m2×Pa @ 75 Pa DP | Report value (ULC S741-08) | 0.0422 | |
| Fastener corrosion (mass loss compared to SS316) | % | Mass loss of SS316 did not exceed 0.07%. Mass loss of SS304 did not exceed 0.11%. ASTM G198-11 | Pass with only 0.04% difference following 4-month test program Footnote (2) | |