JATOBA Family: Scientific name(s):
Commercial restriction:
Fabaceae-caesalpinioideae (angiosperm) Hymenaea courbail Hymenaea intermedia Hymenaea oblongifolia Hymenaea parvifolia no commercial restriction
WOOD DESCRIPTION
LOG DESCRIPTION
Color: red brown Sapwood: clearly demarcated Texture: medium Grain: straight or interlocked Interlocked Grain: slight Note: Slight internal stresses. The color can vary from purple brown to or orangey brown to red brown slightly veined.
Diameter: Thickness of Sapwood: Floats: Log Durability:
PHYSICAL PROPERTIES
MECHANICAL/ACOUSTIC
19 – 31 inches 1 – 4 inches no moderate (treatment recommended)
Physical and mechanical properties are based on mature heartwood specimens. These properties can vary greatly depending on origin and growth conditions. Mean Std. Dev. Mean Std. Dev. Specific Gravity*: Crushing Strength*: 0.94 0.13 14,068 psi 2,175 psi Janka Hardness (lbs): Static Bending Strength*: 2,690 23,206 psi 4,496 psi Volumetric Shrinkage: Modulus of Elasticity*: 0.59% 0.11% 3,402,585 psi 870,516 psi Total Tangential Shrinkage (TS): 7.5% 1.2% Total Radial Shrinkage (RS): Musical Quality Factor: 148.5 measured at 2888 Hz 3.9% 1.4% TS/RS Ratio: 1.9 Fiber Saturation Point: 23% *At 12% moisture content. Stability: moderately stable to stable
NATURAL DURABILITY AND TREATABILITY Fungi and termite resistance refers to end-uses under temperate climate. Except for special comments on sapwood, natural durability is based on mature heartwood. Sapwood must always be considered as non-durable against wood degrading agents. E.N. = Euro Norm Funghi (According to E.N. standards): class 2-3 – durable to moderately durable Dry Wood Borers: class D – durable (sapwood demarcated, risk limited to sapwood) Termites (According to E.N. standards): class M – moderately durable Treatability (according to E.N. standards): class 4 – not permeable Use class ensured by natural durability: class 3 – not in ground contact, outside Species covering the use class 5: no Note: This species is listed in the European standard NF EN 350-2.
REQUIREMENT OF A PRESERVATIVE TREATMENT Against dry wood borer attacks: In case of risk of temporary humidification: In case of risk of permanent humidification:
Overseas Hardwoods Company
does not require any preservative treatment does not require any preservative treatment use not recommended
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