Chatoyance was measured by the chatometry.com team using the PZC method. The statistics for this specific timber are hereby summarized to provide an evaluation of data robustness:
Number of sources for samples: 12
Number of individual trees analyzed: 15
Number of specimens: 47
Number of measurements: 141
Max PZC read (of all measurements): 24.4
Min PZC read (of all measurements): 11.0
Max PZC average on one log: 20.6
Min PZC average on one log: 12.8
PZC Average of all logs: 15.8

Species: tectona grandis
Family: Lamiaceae
Clade: Angiospermae
Description: Tectona grandis (Teak) is a large, deciduous tree renowned for its exceptionally durable, golden-brown hardwood timber, highly valued for furniture, decking, and construction due to its natural resistance to rot and pests. It features large, leathery leaves and a tall, straight trunk.
Other Local Names: Java teak, Teca, Teca, Teca, Teck, Sagwan, Tega, Tekka, Thekku, Tekku maram, Jati, Tek

Reference Colour: Yellow brown
Texture: Coarse
Grain: Straight
Interlocked Grain: Absent
Notes: The wood darkens and presents golden glints with age. Sometimes black brown veins. Oily to the touch.

Diameter: 25÷100cm
Density @12% MC: 670kg/m³
Janka Hardness: 1260lbf
Crushing Strength @12%MC: 56MPa
Static Bending Strength @12%MC: 98MPa
Longitudinal Modulus of Elasticity E: 13.74GPa
Volumetric Shrinkage Coefficient: 0.34% per %
Total Tangential Shrinkage TS: 4.7%
Total Radial Shrinkage TS: 2.6%
T/R Anisotropy Ratio: 1.8-
Fibre Saturation Point: 24%
Thermal Conductivity: 0.22W/mk
Lower Heating Value: 19270KJ/Kg
Sapwood Thickness: 2÷6cm
Sapwood Demarcation: Clearly demarcated

Resistance to Decay: Class 1 – very durable
Resistance to Dry Wood Borers: Class D – durable (sapwood demarcated, risk limited to sapwood)
Resistance to Termites: Class M – moderately durable
Treatability: Class 4 – non-treatable Atlas of Tropical Timber Species
Use Class Covered by Natural Durability: Class 4 – in ground or fresh water contact
Durability Notes: The durability of Teak wood from plantation is much lower than that of Teak from natural forest. It is moderately resistant to fungi and classified as sensible to durable against termites. This species is listed in the standard NF EN 350 which makes a difference between Teak from Asia (meaning natural forest) and Teak planted in Asia and other countries; the first one is classified in the natural durability class 1 towards fungi and in natural durability class M towards termites; the second is in the natural durability class 1-3 towards fungi and in natural durability class M-S towards termites. The use class mentioned corresponds to Teak from natural forest. According to the European standard NF EN 335 of May 2013, performance length might be modified by conditions in which it is used. This species naturally covers the use class 5 (wood permanently or regularly submerged in salt water, sea water or brackish water) due to its high silica content.

Log Buoyancy: Does not float
Log Conservation: Good
Drying Rate: Slow
Drying Risk of Distortion: No risk or very slight risk
Drying Risk of Case Hardening: No known specific risk
Drying Risk of Checking: No risk or very slight risk

Blunting Effect: High
Machining Tool: Tungsten carbide
Suitability for Peeling: Not recommended or without interest
Suitability for Slicing: Good
Sawing Machining Notes: Silica content is variable. Sawdust is an irritant.
Assembly Nailing Screwing: Good but pre-boring necessary
Assembly Notes: Pre-boring recommended due to a slight tendency to split when nailing. Satisfactory
End Uses: Arched goods, Stakes, Turned goods, Sliced veneer, Framing, Decking, Ship building (planking and deck), Bridges (parts in contact with water or, Cabinetry (high-end furniture) ground), Open boats, Bridges (parts not in contact with water, or ground), Stairs (inside), Poles, Panelling, Exterior panelling, Exterior joinery, Cooperage, Interior joinery, Rolling shutters, Flooring

Source 1: Tropical Timber Atlas, Editions Quae, e-ISBN 978-2-7592-2770-9