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Ramin

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The timber sold under the name ramin comes from a mixture of species originating in Malaysia, Indonesia, Philippines, Papua New Guinea and Fiji.

Ramin is listed in Appendix II of the Convention on the International Trade in Endangered Species (CITES). Imports into Australia are required to be sourced only from sources approved by the Australian Government. You can find more information here.

Ramin is used for flooring, plywood, mouldings, dowels, handles, turnery and carving, and it is very popular for picture framings.

The heartwood is straw-coloured and the sapwood is similarly coloured and up to 60mm. The texture of ramin is medium and even and its grain is straight or shallowly interlocked, with very little figure. The green timber has an unpleasant odour but this disappears when it is dry.

Ramin is easy to work to a smooth finish. Pre-drilling may be needed when nailing near ends. It peels well, although the veneer is inclined to be brittle, and it is unsuitable for steam bending because of excessive buckling. If any inner bark is present on material being processed, the fine splinters from it can cause skin irritation. It glues well, and takes polish, paint and stains easily.

The untreated sapwood is susceptible to lyctid borer attack and is not resistant to termites. It takes preservatives easily. 

Appearance

The grain of ramin is straight or shallowly interlocked, with very little figure, and the texture is medium and even. The heartwood is straw-coloured, with the sapwood being a similar colour and up to 60mm wide.

Common Applications

Ramin is used for mouldings, flooring, and plywood. It is very popular for picture frames and its other applications include dowels, handles, turnery and carving.

Common Form

Sawn

Workability

Ramin is easy to work to a smooth finish. Pre-drilling may be needed when nailing near ends. It peels well, although the veneer is inclined to be brittle, and it is unsuitable for steam bending because of excessive buckling. If any inner bark is present on material being processed, the fine splinters from it can cause skin irritation. It glues well, and takes polish, paint and stains easily.

The untreated sapwood is susceptible to lyctid borer attack and is not resistant to termites. It takes preservatives easily. It may be prone to end splits, particularly in thicker sections, and surface checking. It is prone to sap stain fungi attack.

Origin of Timber

Asia

Availability - Further Information

Ramin is listed in Appendix II of the Convention on the International Trade in Endangered Species (CITES). Imports into Australia are required to be sourced only from sources approved by the Australian Government. See a link in the Overview description for more details.

Shrinkage

Very Low Low Medium High Very High

Tangential :

4.80%

Radial:

1.80%

Unit Movement Tangential:

0.31%

Unit Movement Radial:

0.13%

Strength Group

Very High

High

Reasonably High

Medium High

Medium

Reasonably Low

Low

Very Low

Unseasoned:

S1

S2

S3

S4

S5

S6

S7

Seasoned:

SD1

SD2

SD3

SD4

SD5

SD6

SD7

SD8

Stress Grade

Structural
No. 1
Structural
No. 2
Structural
No. 3
Structural
No. 4
Structural
No. 5

Unseasoned:

F14

F11

F8

F7

F5

Seasoned:

F22

F17

F14

F11

F8

Density per Standard

Seasoned:

625kg/m3

Unseasoned:

Joint Group

Very High

High

Reasonably High

Medium

Low

Very Low

Unseasoned:

J1

J2

J3

J4

J5

J6

Seasoned:

JD1

JD2

JD3

JD4

JD5

JD6

Colour

  White, yellow, pale straw to light brown Pink to pink brown Light to dark red Brown, chocolate, mottled or streaky
   

Mechanical Properties

Modulus of Rupture - Unseasoned:

67

Modulus of Rupture - Seasoned:

128

Modulus of Elasticity - Unseasoned:

11

Modulus of Elasticity - Seasoned:

15

Maximum Crushing Strength - Unseasoned:

37

Maximum Crushing Strength - Seasoned:

70

Impact - Unseasoned:

Impact - Seasoned:

Toughness - Unseasoned:

Low - up to 15 Nm

Toughness - Seasoned:

Medium - 15 - 24 Nm

Hardness - Unseasoned:

2.8

Hardness - Seasoned:

5.8

Durability

Low Moderate Reasonably High High
(0 - 5 yrs) (5 - 15 yrs) (15 - 25 yrs) (more than 25 yrs)

In-Ground:

(0 - 7 yrs) (7 - 15 yrs) (15 - 40 yrs) (More than 40 yrs)

Above ground:

(0 - 20 yrs, usually < 5) (21 - 40 yrs) (41 - 64 yrs) (More than 60 yrs)

Marine Borer Resistance:

Lyctid Borer Susceptibility:

Susceptible

Lyctid Borer Susceptibility - Other:

Termite Resistance:

Not Resistant

Fire Properties

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

EFH Ignitibility:

0 1 2 3 4 5 6 7 8 9 10

EFH Spread-of-Flame Index:

EFH Smoke-Developed Index:

1 - non-combustible 2 - reasonably non-combustible 3 - slightly combustible 4 - combustible

Fire Properties Group
Number:

Group Number - Other:

3 if used on MDF or particleboard ≥12mm; veneer thickness 0.6 - 0.85mm

Average Specific Extinction Area:

<250

Bushfire Resistance:

BAL 12.5 and 19 – Door and window Joinery only

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