Comparison of properties with North American and Japanese wood

Comparison of properties with North American and Japanese wood

SPECIES

COMPRESSION STRENGTH

TENSIONAL STRENGTH

MODULUS OF ELASTI­CITY

BREAKING STRENGTH

DENSITY

Commercial/scientific name

In the direc­tion of the grain

N/mm2

Perpendic­ular to the direction of the grain

N/mm2

In the direc­tion of the grain

N/mm2

Bent

N/mm2

N/mm2

N/mm2

kg/m3

FINNISH

Spruce/Pinea abies

39

5,3

116

87

10.000

6,8

470

Pine/Pinus silvestris

50

7,0

95

91

10.900

9,1

540

NORTH AMERICA

Douglas Fir/Pseudot menziessii

43

5,9

95

66

11.300

7,2

520

Giant Redwood/Sequoia sempervirens

30

4,1

70

50

6.800

6,8

430

Hemlock/Tsuga heterophylla

44

5,2

69

79

10.500

8,2

480

Pitch pine/Pinus palustris

59

6,9

105

78

10.900

9,8

680

Larch/Larix decidua

50

6,5

97

90

12.500

8,2

470

JAPANESE

Sugi Cryptomeria japonica

35

 

90

65

7.500

6,0

380

Hinoki Chamaecyparis obtusa

40

 

120

75

9.000

7,5

440

Akamatsu Pinus densiflora

45

 

140

90

11.500

9,5

520

Kuromatsu Pinus thunbergii

45

 

140

85

10.500

9,0

540

Goyamatsu Pinus parviflora

35

 

80

70

7.000

8,0

450

The values for strength and elasticity are averages and based on measurements of flawless test pieces with a 12% level of moisture. The values are not meant as design values, for which values given in national standards must be used.