2974 Chapter 24 



Table 24-14. — Properties of several types of flakeboard fabricated at 42 poundslcuft 

 density based on ovendry weight (Price and Hse, see text footnote^) 



Modulus Linear 



Flake Bending of Internal expan- 



Species mixture' type Resin^ strength elasticity bond sion^ 



psi 1000 psi psi % 



7 species Lathe L - 5'/2 5,500 716 66 . 16 



0.015 face 



0.025 core 



Hot 

 7 species Lathe L - 5'/2 4,840 610 71 .19 



0.020 



Hot 



SG (55), RO (20), Lathe L - 5'/2 4,080 640 98 .22 



A (25) 0.020 



Hot 

 HA (55), PE (45) Lathe L - 5'/2 3,990 600 1 12 .21 



0.020 



Hot 

 HA (55), OC (45) Lathe L - 5'/2 3,810 541 113 .30 



0.020 



Hot 



SG (58), HA (33), Lathe L - 5'/2 3,870 574 79 .08 



E (9) 0.020 



Hot 

 RO (31), A (38), OC (11), . Lathe L - 5'/2 3,500 568 110 .33 



PE (20) 0.020 



Hot 

 7 species Disk L - 5'/2 4,850 691 87 .20 



0.020 



Hot 

 7 species Disk L - 5'/2 4,350 624 103 .25 



0.020 



Cold 

 7 species Disk L - 4'/2 3,300 560 69 .27 



0.020 



Cold 

 7 species Disk P - 3 2,550 560 72 .42 



0.020 



Cold 

 7 species Disk P - 2'/4 2,125 498 62 .47 



0.020 



Cold 



'The 7 species and percentages are sweetgum (SG)-32, hackberry (HA)- 18, elm (E)-5, red oak 

 (R0)-14, ash (A)-17, overcup oak (OC)-5, and pecan (PE)-9. 



^The letter abbreviation indicates liquid (L) or powder (P) phenolic resin. The number gives the 

 percent based on OD weight of panel. 



^Ovendry to vacuum-pressure soak test method P-1 of the American Plywood Association. 



