Klinki pine is a Papua New Guinean softwood usually seen as plywood in Australia. It is used for battery separators, ice cream spoons, joinery and furniture.
Bulolo Pine, Pai, Rassu, Araucaria klinkii, Wau Pine
Araucaria hunsteinii
![](/sites/default/files/styles/detail_image/public/AraucariahunsteiniiKlinkiPine.jpg?itok=LwwzrOYT)
Klinki pine is a timber from New Guinea, usually seen only as plywood in Australia. The wood is virtually identical to hoop pine, but with a lower density. Like hoop pine, the heartwood is a straw to pale brown colour, and the sapwood is not easily distinguishable. The texture is very fine and even, and the grain is straight. Klinki pine can be distinguished from hoop pine by applying a few drops of concentrated hydrochloric acid, which gives the wood an intense green colour. The plywood is used for battery separators, ice-cream spoons and furniture joinery.
Shrinkage
Very Low | Low | Medium | High | Very High | |
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Tangential : |
2.80%
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Radial : |
1.60%
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Unit Movement Tangential: |
0.25%
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Unit Movement Radial: |
0.16%
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Strength Group
![Strength groups are given for unseasoned (S1-S7) and seasoned (SD1-SD8) timber in accordance with AS 2878. S1 and SD1 yield the highest strength and stiffness whereas S7 and SD8 yield the lowest.](/themes/custom/woodsolutions/images/tooltip.png)
Very High |
High |
Reasonably High |
Medium High |
Medium |
Reasonably Low |
Low |
Very Low |
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Unseasoned: |
S1 |
S2 |
S3 |
S4 |
S5 |
S6 |
S7 |
S8 |
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Seasoned: |
SD1 |
SD2 |
SD3 |
SD4 |
SD5 |
SD6 |
SD7 |
SD8 |
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Stress Grade
![A stress grade is defined in AS 1720 as the classification of timber for structural purposes by means of either visual or machine grading. The stress grade indicates the basic working stresses and stiffnesses to be used for structural design purposes. Measured in MPa.](/themes/custom/woodsolutions/images/tooltip.png)
Structural No. 1 |
Structural No. 2 |
Structural No. 3 |
Structural No. 4 |
Structural No. 5 |
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Unseasoned: |
F8 |
F7 |
F5 |
F4 |
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Seasoned: |
F14 |
F11 |
F8 |
F7 |
F5 |
Density per Standard
![Seasoned density is based on moisture content of 12%. Unseasoned density is an approximation as it depends on the moisture content at the time of measurement. Measured kg/m3.](/themes/custom/woodsolutions/images/tooltip.png)
Seasoned: |
430kg/m3
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Unseasoned: |
470kg/m3
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Joint Group
![The joint group is a classification of the strength of a species in joint design. The values are from 1 (very high strength) to 6 (very low strength).](/themes/custom/woodsolutions/images/tooltip.png)
Very High |
High |
Reasonably High |
Medium |
Low |
Very Low |
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Unseasoned: |
J1 |
J2 |
J3 |
J4 |
J5 |
J6 |
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Seasoned: |
JD1 |
JD2 |
JD3 |
JD4 |
JD5 |
JD6 |
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Colour
![The colour of seasoned heartwood can vary between species and often within a species. The information provided should be used as a general guide only. In most cases, the colour of sapwood is either a lighter shade of the heartwood or a white/cream colour.](/themes/custom/woodsolutions/images/tooltip.png)
White, yellow, pale straw to light brown | Pink to pink brown | Light to dark red | Brown, chocolate, mottled or streaky | |
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Mechanical Properties
Modulus of Rupture - Unseasoned: |
42
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Modulus of Rupture - Seasoned: |
76
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Modulus of Elasticity - Unseasoned: |
10
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Modulus of Elasticity - Seasoned: |
12
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Maximum Crushing Strength - Unseasoned: ![]() |
22
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Maximum Crushing Strength - Seasoned: |
43
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Impact - Unseasoned: |
10
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Impact - Seasoned: |
8
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Toughness - Unseasoned: |
Low - up to 15 Nm
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Toughness - Seasoned: |
Low - up to 15 Nm
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Hardness - Unseasoned: |
2.0
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Hardness - Seasoned: |
2.3
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Durability
Low | Moderate | Reasonably High | High | |
(0 - 5 yrs) | (5 - 15 yrs) | (15 - 25 yrs) | (more than 25 yrs) | |
In-Ground: |
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(0 - 7 yrs) | (7 - 15 yrs) | (15 - 40 yrs) | (More than 40 yrs) | |
Above ground: |
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(0 - 20 yrs, usually < 5) | (21 - 40 yrs) | (41 - 64 yrs) | (More than 60 yrs) | |
Marine Borer Resistance: |
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Lyctid Borer Susceptibility: |
Not Susceptible |
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Lyctid Borer Susceptibility - Other: |
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Termite Resistance: |
Not Resistant
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Fire Properties
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
EFH Spread-of-Flame Index: |
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EFH Smoke-Developed Index: |
Bushfire Resistance: |
Not Tested
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Klinki pine is very similar to hoop pine, and can be identified by applying a few drops of hydrochloric acid, which turns the wood an intense green. The texture is very fine and even, and the grain is straight. The sapwood and heartwood are not readily distinguishable, with both being a straw to pale brown colour.
Usually only seen as plywood in Australia, Klinki pine is used for battery separators, ice-cream spoons and furniture joinery. It is also a suitable timber for use in light aircraft.
Klinki pine is easy to work and very few issues have been encountered.
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