Property

Stiff outerwood

Nonstiff outerwood

Stiff corewood

Nonstiff corewood


Green density (kg m^{−3})

1143 (3)

1099 (9)

933 (21)

818 (22)

Dry density (kg m^{−3})

531 (5)

458 (9)

438 (8)

393 (5)

Acoustic velocity (m s^{−1})

4651 (8)

4221 (26)

4191 (34)

3413 (14)

Number of rings

>20

>20

<10

<10

MFA (degrees)

7 (1)

8 (1)

9 (2)

21 (1)

Standard deviation of MFA (degrees)

9 (1)

12 (1)

11 (1)

12 (0)

 Mean values of tested wood properties for the sample types. Standard errors are in brackets. The reported standard deviation for the microfibril angle (MFA) is the value of the standard deviation parameter fitted to the model used to describe the microfibril spread around the mean (Cave and Robinson 1998a; 1998b)