 |
|
High Range
|
Low Range
|
Hem-Fir
|
Douglas Fir
Pseudotsuga menziseii |
Sitka Spruce
Picea sitshensis |
Western Red Cender
Thuja plicata |
Yellow Ceder
Chamaecyparis nootkatensis |
Ambilis Fir
Abies Amabilis |
Pacific Coast Hemlock
Tsuga Heterophylla |
Physical Propeties
|
Density(12%-k/m2)
|
|
|
445 |
480 |
545 |
430 |
385 |
480 |
Specific Gravity(12% m.c.)
|
|
|
0.39 |
0.43 |
0.49 |
0.39 |
0.34 |
0.43 |
Bending Strength(MOR)(MPa)
|
|
|
68.9 |
81.1 |
88.6 |
69.5 |
53.8 |
79.7 |
Stiffiness(MOE)(x103 MPa)
|
|
|
11.4 |
12.3 |
13.5 |
11.2 |
8.3 |
11.0 |
Compression parallel to grain(MPa)
|
|
|
40.8 |
49.7 |
50.1 |
37.8 |
33.9 |
45.9 |
Compression perpendicular to grain(MPa)
|
|
|
3.6 |
4.5 |
6.0 |
4.1 |
3.4 |
4.7 |
Shear(MPa)
|
|
|
7.5 |
6.5 |
9.5 |
9.2 |
5.6 |
9.2 |
Cleavage(N/mn)
|
|
|
36.8 |
37.5 |
38.9 |
38.0 |
25.4 |
45.4 |
Dimensional stability
(Shrinkage% green to O.D.)
|
Tangential |
|
|
9.2 |
7.8 |
7.4 |
7.8 |
4.5 |
6.0 |
| Radial |
|
|
4.4 |
4.2 |
4.8 |
4.6 |
2.1 |
3.7 |
| Hardness(N) |
|
|
1820 |
2740 |
2990 |
2200 |
1470 |
2510 |
Durability
|
Natural Durability(approx. life in contact with ground)
|
>10yrs
|
<10yrs
|
 |
|
 |
|
|
|
| Natural insect resistance |
|
|
|
|
|
|
|
|
| Trearability(preservatives or fire) |
permeable-moderately resistant |
resistant-extremely resistant |
|
|
|
|
|
|
Drying
|
Drying rate |
rapid-moderate |
fairly slow-very slow |
|
|
|
|
|
|
| Tendency to check during drying |
absent or weasily controllable |
controllable with some care |
|
|
|
|
|
|
| Tendency to distortion during dying |
absent-slight |
moderate |
|
|
|
|
|
|
Workability
|
Machining(planing/turning/moulding/mortising/boring, etc.) |
good-excellent |
fair |
|
|
|
|
|
|
| Blunting |
very little/slight-little/slight |
moderate |
|
|
|
|
|
|
| Nailing/resistance to spliting |
well-excellent |
poor-satisfactory |
|
|
|
|
|
|
| Screw/nail holding |
good-excellent |
satisfactory |
|
|
|
|
|
|
| Gluing |
w/out difficulty exceptional |
difficult satisfactory |
|
|
|
|
|
|
Finishing
|
Natural
colour-whitsh1, creamy wht2,lt.buff, pale/It.yellw4. yellwsh5,
yellwsh-brn6,pnksh7, redsh wht8,salmon9, pnkshyellw10, red11,cherry
rd12, do rd13, mahogany14, pnk-brn15, orng16, dk chocolate brn17, It
brn18, pale rdsh brn19, orng-wht20
|
1,3,6 |
1,6 |
4,8,11,13 |
2,4,7,10,16 |
9,17,15 |
1,5 |
| Paint finishing |
good- excelent |
poor-satisfactory |
|
|
|
? |
|
|
| Stain finishing |
good- excelent |
poor-satisfactory |
|
|
|
|
|
|
| Tendency to resin exudation |
Absent or infrequent after drying |
Acceptability depends on finish to be used and visual standards required |
|
|
|
|
|
|
Miscellaneous properties
|
Tendency to corrode ferrous metals |
Likely |
Unlikely |
|
|
|
|
|
|
| Becomes stained in contact with ferrous metals |
Likely |
Unlikely |
|
|
|
|
|
|
