Species overview



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Taun 

– Pometia pinnata



Other Names

: Akwa, Tava, Ahabu



Region of Origin

: Solomon Islands

SPECIES OVERVIEW:

Taun heartwood colour is pink-brown maturing to a dull 

reddish-brown with age. The grain is usually straight but 

sometimes interlocked or with a regular wave. 

MAIN USES:

A medium density hardwood with a large range of 

applications from structural work to joinery, furniture, 

cabinets, flooring and heavy construction – it may 

require treatment for high hazard applications. It has 

particular application in New Zealand for hardwood 

door cores in the manufacture of fire doors.

WORKING PROPERTIES:

Machines satisfactorily, good gluing and nailing 

properties although splitting may occur. It finishes  

well and is a good bending timber. Non-siliceous.

MECHANICAL PROPERTIES:

Taun is a medium density hardwood that is moderately 

hard and strong with excellent steam bending 

properties.

AVAILABILITY:

Specifications stocked at Rosenfeld Kidson are:  

Sawn 40mm and 50mm thicknesses in varying  

fixed widths.

GRADING:


Select.

Species Fact Sheet

DENSITY (kg/m3)

*

:  



710

DURABILITY:  

Moderately durable

STRENGTH GROUP: 

 

SD4


MOR (MPa): 

 

113



MOE(GPa): 

 13.5


JANKA(kN):  

5.5


SHRINKAGE GREEN TO 12% M.C.   

Tangential Radial

 

 7.0 


5.0

*Air Dry Density (kg/m3) is average indication only and actual value may vary. Refer to timber properties tables over page for strength, shrinkage and durability classifications.



Email: rk@rosenfeldkidson.co.nz

Web: www.rosenfeldkidson.co.nz

Auckland Branch:

Telephone: +64 9 573 0503

Fax: +64 9 573 0504

513 Mount Wellington Highway

Mount Wellington

Auckland 1060



Christchurch Branch:

Telephone: +64 3 349 3316

Fax: +64 3 349 3317 

15 Edmonton Road

Hornby

Christchurch 8042 



Postal Address:

P O Box 621

Shortland Street

Auckland 1140



Email: rk@rosenfeldkidson.co.nz

Web: www.rosenfeldkidson.co.nz

Auckland Branch:

Telephone: +64 9 573 0503

Fax: +64 9 573 0504

513 Mount Wellington Highway

Mount Wellington

Auckland 1060



Christchurch Branch:

Telephone: +64 3 349 3316

Fax: +64 3 349 3317 

15 Edmonton Road

Hornby

Christchurch 8042 



Postal Address:

P O Box 621

Shortland Street

Auckland 1140

Timber Properties

STRENGTH GROUPINGS:

SHRINKAGE CLASSIFICATIONS:

DURABILITY CLASSIFICATIONS:

Minimum

 

values



 

for


 

strength


 

groups


         

(unseasoned

 

timber)


 

 

 



 

(units are Mpa = 145 lb/sq.inch) 

Strength 

group 

Modulus of



rupture 

Modulus of

elasticity 

Maximum


crushing 

strength 

S1 

103 


16300 

52 


S2 

76 


14200 

43 


S3 

73 


12400 

36 


S4 

62 


10700 

31 


S5 

52 


9100 

26 


S6 

43 


7900 

22 


S7 

36 


6900 

18 


 

Minimum values for strength groups             

(seasoned timber) 

(units are Mpa = 145 lb/sq.inch)

Strength 

group 


Modulus of 

rupture 


Modulus of 

elasticity 

Maximum

 

crushing



 

strength


 

SD1


150

21500 


80

SD2


130

18500 


70

SD3


110

16000 


61

SD4


94

14000 


54

SD5


78

12500 


47

SD6


65

10500 


41

SD7


55

9100 


36

SD8


45

7900 


30

 

Description of



 

shrinkage 

Shrinkage from Green to Oven-dry (12% MC) 

(%) before reconditioning 

Tangential

Radial


Very low 

0 - 3.5


0 - 2

Low 


3.5 - 5.0

2 - 3


Medium 

5.0 - 6.5

3 - 4

High 


6.5 - 8.0

4 - 5


Very high 

> 8.0


> 5

Grade of durability 

Approximate service life (years) 

Fully protected 

Above ground, 

exposed 


In-ground, exposed

Very durable 

>50

>40


>25 

Durable 


>50

15-40


15-25 

Moderately durable 

>50

7-15


5-15 

Non-durable 



>50

0-7


0-5 

Document Outline


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