5MD Medium Density Gypsum Based Fireproofing

Specific values listed from laboratory testing of samples prepared and tested in accordance with the procedure designated.  
Results on field applied material may vary.

Physical Characteristics of Type 5MDTM 
Property & Test Method Suggested Specification Standard Tested Values and Results*
Density, ASTM E-605 22 pcf (352 kg/m3) min. avg. 22 pcf (352 kg/m3) max
Combustibility, ASTM E-136 Non-combustible Passed, non-combustible
Compressive Strength, ASTM E-761 7,200 lb/ft2 (345 kPa) 10,350 lb/ft2 (496 kPa)
Cohesion/Adhesion, ASTM E-736 500 lb/ft2 (23.9 kPa) >1,200 lb/ft2 (57.4 kPa)
Effect of Impact, ASTM E-760 No spalling, cracking or delamination Passed, no spalling, cracking or delamination
Effect of Deflection, ASTM E-759 No Spalling or delamination Passed, no spalling or delamination
Corrosion of Steel, ASTM E-937 No contribution to corrosion Passed, no contribution to corrosion
Erosion by Air, ASTM E-859 Max. 0.005 g/ft2 (0.05 g/m2) Passed, 0.000 g/ft2 (0.00 g/m2) after 24 hours
Surface Burning, ASTM E-84 Flame Spread 25, Smoke 200 Flame Spread 0, Smoke 0
DOD Classification, ASTM E-1042 For Classification Purposes Only Type 1, NRC 50, class (a), Category A
Fire Resistance, ASTM E-119 Proven in Fire Resistance Tests Passed, see UL Designs
Fungi Resistance, ASTM G-21 No growth when fungicide used Passed, no growth with optional fungicide

* Laboratory performance tests are conducted with sample densities at or below the recommended specification density.

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Southwest Fireproofing Products Company, Albuquerque, NM 87107 Phone: (505) 345-1633

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