Mechanical Properties 
Sen ia lighter in weight than either American elm or commercial white ash. 
At 12 percent moisture content, sen weighs about 28 pounds per cubic foot, 
American elm about 31 pounds, and ash about 36 pounds. Elm and ash both 
exceed sen in all strength properties as shown in table 1. On the basis of 
strength properties, sen is more nearly comparable to red alder ( Alnus rubra 
Bong.), American chestnut ( Castanea dentata (Marsh.) Borkh.), and yellow- 
poplar ( Liriodendron tulipifera L. )'. 
Seasoning and Shrinkage 
Sen reportedly shrinks and swells appreciably with changes in moisture 
content. However, no values are available regarding this property. The wood 
can be air-seasoned or kiln-dried without difficulty.— 
Workability 
Sen is rated as being easy to work.— 
Finishing 
The coarse texture of the springwood pore zone necessitates the use of fillers 
when a smooth, continuous finish is required. 
Durability 
Sen is nondurable and therefore best suited for interior use. 
UBes 
In Japan, sen is used in general construction and the manufacture of cabinets, 
furniture, interior trim, carved items, chests, handles, plywood, musical 
instruments, boats, and numerous miscellaneous articles. 
In the United States, it is used primarily in the form of plywood for paneling 
and doors . 
o 
■KBruce, H. D., Cockrell, B. A., and Cummings, L. J. Properties and Uses of 
Commercially Important Japanese Woods. Natural Resources Section, General 
Headquarters, SCAP, Report No. 1^7, October 1951. 
Rept. No. 1979 -2- 
