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Woodworking Math

Tropical wood · Southeast Asia and Oceania

Benguet Pine wood

Benguet Pine (Pinus insularis, family Pinaceae) is a tropical timber from Southeast Asia and Oceania. Dry, its Janka hardness is 425–785 lbf (1,890–3,492 N), and air-dry it weighs about 32–38 lb/ft³ (513–609 kg/m³). The figures are from the USDA Forest Products Laboratory's Tropical Timbers of the World, pp. 705–706.

Other names, by country: Saleng (Philippines), Tinyu, Tinshu (Burma), Dingsa (India).

Key numbers

Janka hardness, dry
425–785 lbf (1,890–3,492 N)
Green: 400–540 lbf (1,779–2,402 N)
As printed: “Janka side hardness 400-540 lb green and 425-785 lb dry.”
Air-dry density
32–38 lb/ft³ (513–609 kg/m³)
Basic specific gravity
0.43–0.50 oven-dry weight, green volume
As printed: “Basic specific gravity (ovendry weight/green volume) 0.43-0.50; air-dry density 32-38 pcf.”
Shrinkage, green to oven-dry
7.8% tangential
Radial 4.4%

One source: USDA Forest Products Laboratory, Tropical Timbers of the World (Chudnoff, 1979 edition), the only published source read for this wood

Strength

Bending strength is the modulus of rupture (MOR); stiffness is the modulus of elasticity (MOE); crushing strength is compression parallel to the grain. The sheet collects these from published tests: it prints 4 data sets, from different tests and sources, so they can differ widely; all are shown, in the sheet's order, each at the moisture content printed beside it, never restated as 12%.

MoistureBending strength (MOR)Stiffness (MOE)Crushing strength
Green7,650 psi (53 MPa)1.46 million psi (10.1 GPa)3,520 psi (24 MPa)
12% MC15,000 psi (103 MPa)2.12 million psi (14.6 GPa)7,400 psi (51 MPa)
Green6,300 psi (43 MPa)1.05 million psi (7.2 GPa)3,330 psi (23 MPa)
12% MC10,660 psi (73 MPa)1.44 million psi (9.9 GPa)6,070 psi (42 MPa)

A dash means the sheet prints no value; none is filled in.

What the data sheet says

Color, grain and texture
Heartwood yellowish, light reddish-brown, to pale brown, darkening on exposure; sapwood whitish to creamy-white, not distinct. Texture moderately course, uneven; grain straight; dull to somewhat lustrous; resinous odor.
Working properties
Easy to work; resin, though, may gum cutters and tools.
Durability
Heartwood not durable in ground contact, readily attacked by termites.
Uses
General construction, posts and poles, pulp and paper, fiberboard, veneer and plywood, furniture components, boxes and crates, millwork.
Where it grows
High mountain areas of southeast Asia including Assam and Burma, southern Vietnam, and northern Luzon in the Philippines. A favored plantation species in Zambia, Kenya, and elsewhere.

Quoted from Tropical Timbers of the World, pp. 705–706, a USDA Forest Products Laboratory work in the public domain.

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Sources

  1. USDA Forest Products Laboratory, Tropical Timbers of the World (Chudnoff, USDA Forest Products Laboratory, 1979 edition), read 2026-11-07.

How the tags work: How we source every number.