Contents

Myanmay Hard Wood

Teakwood (Kyune)

Tectona grandis

Moisture Content	Bending Strength	Mod. of Elasticity	Compression parallel to grains	Density
%	N/mm2	N/mm2	N/mm2	KN/m3
14.1	100	12627	57.6	6.28-8.64

Special Properties:

Lasts indefinately under water, Resistance to acid, Impervious to insects and white ants but not immune to marine borers.

Pyinkado (Ironwood)

Xylia dolabriformis

Moisture Content	Bending Strength	Mod. of Elasticity	Compression parallel to grains	Density
%	N/mm2	N/mm2	N/mm2	KN/m3
10.3	142	17457	79.6	9.739

Special Properties:

Resistant to termite attack and marien borers.

Padauk

Pterocarpus macrocarpus

Moisture Content	Bending Strength	Mod. of Elasticity	Compression parallel to grains
%	N/mm2	N/mm2	N/mm2
12.5	142	14330	75.5

Special Properties:

Resistant to termites, Heaviest, Hardest and Strongest timber in South-East Asia

Thitya

Shorea oblongifolia

Moisture Content	Bending Strength	Mod. of Elasticity	Compression parallel to grains
%	N/mm2	N/mm2	N/mm2
10.6	158	19430	76.0

Special Properties:

White ant proof and no fungus attack, Untreated sleepers last for 15 years.

Ingyin

Pentacme siamensis

Moisture Content	Bending Strength	Mod. of Elasticity	Compression parallel to grains
%	N/mm2	N/mm2	N/mm2
13.4	111	15718	54.3

Special Properties:

Treatment is very difficult as the timber is hard and heavy, Resistant to white ant.

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Unit Conversion

1 N/mm² = 145.038 psi
1 KN/m³ = 6.366 lb/ft³