Collection: Marri

Marri (Corymbia calophylla), a distinctive bloodwood species native to Western Australia, is highly regarded for its unique appearance and adaptability. Found in jarrah and karri forests across the southwest of the state, marri thrives in diverse conditions, including the Swan Coastal Plain and Darling Scarp. Its striking aesthetic and durability have made it an increasingly popular choice for furniture and flooring applications, despite its traditionally low recovery rates of first-grade timber due to the high gum content.

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Appearance of Marri Timber

Marri timber boasts a visually stunning contrast between its yellow to pale brown heartwood and the pale, almost white sapwood. The dark red gum veins that give the tree its alternative name, "red gum," add character and texture to the timber. With a coarse but even texture and slightly interlocked grain, marri timber finishes to a warm honey colour, often highlighted by its distinctive vein structure. Logs are generally sound to the centre, with gum veins frequently appearing as a natural feature.

Applications of Marri Timber

Marri’s natural beauty makes it a standout choice for modern furniture and household applications. Its finished honey-toned timber is widely used in flooring, where its vein structure adds character to interior spaces. The wood’s versatility extends to general construction, tool handles, oars, and sporting equipment. When preservative-treated, marri is suitable for outdoor uses such as piles, poles, and posts.

Workability of Marri Timber

Marri timber can be challenging to work with due to its high gum content and interlocked grain. However, it accepts preservative treatments readily, making it suitable for both interior and exterior applications. With proper preparation and tools, marri timber can be machined and finished to a smooth, attractive surface that highlights its natural features.

Durability and Maintenance of Marri Timber

While not as durable as jarrah or karri, marri’s treated timber performs well in a variety of applications. Its gum veins and coarse texture require careful handling during machining and finishing, but the resulting products are resilient and visually appealing. Regular maintenance, especially for outdoor applications, will ensure longevity and aesthetic integrity.

Origin and Availability of Marri Timber

Native to Western Australia, marri grows extensively in the state’s southwest, from north of Geraldton to Cape Riche and inland beyond Narrogin. Historically underutilized, marri is gaining popularity for furniture and flooring, leading to increased interest from timber suppliers. Despite this, availability remains somewhat limited outside its native region.

 Very LowLowMediumHighVery High
   
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Tangential :   6.60% 
Radial :   3.70% 
Unit Movement Tangential:  0.34%  
Unit Movement Radial:  0.22%  
 Very HighHighReasonably HighMedium HighMediumReasonably LowLowVery Low
Unseasoned:S1S2S3S4S5S6S7S8
  
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Seasoned:SD1SD2SD3SD4SD5SD6SD7SD8
  
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 Structural
No. 1
Structural
No. 2
Structural
No. 3
Structural
No. 4
Structural
No. 5
Unseasoned:F17F14F11F8F7
Seasoned:F27F22F17F14F11
Seasoned:

855kg/m3

Unseasoned:

1200kg/m3

 Very HighHighReasonably HighMediumLowVery Low
Unseasoned:J1J2J3J4J5J6
 
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Seasoned:JD1JD2JD3JD4JD5JD6
 
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 White, yellow, pale straw to light brownPink to pink brownLight to dark redBrown, chocolate, mottled or streaky
  
  
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Modulus of Rupture - Unseasoned:78 MPa
Modulus of Rupture - Seasoned:125 MPa
Modulus of Elasticity - Unseasoned:14
Modulus of Elasticity - Seasoned:17 GPa
Maximum Crushing Strength - Unseasoned:41 MPa
Maximum Crushing Strength - Seasoned:66 MPa
Impact - Unseasoned:20 J
Impact - Seasoned:23 J
Toughness - Unseasoned:Medium - 15 - 24 Nm
Toughness - Seasoned:Medium - 15 - 24 Nm
Hardness - Unseasoned:6.6
Hardness - Seasoned:7.1
 LowModerateReasonably HighHigh
 (0 - 5 yrs)(5 - 15 yrs)(15 - 25 yrs)(more than 25 yrs)
In-Ground: 
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 (0 - 7 yrs)(7 - 15 yrs)(15 - 40 yrs)(More than 40 yrs)
Above ground: 
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 (0 - 20 yrs, usually < 5)(21 - 40 yrs)(41 - 64 yrs)(More than 60 yrs)
Marine Borer Resistance:
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Lyctid Borer Susceptibility:Susceptible
Lyctid Borer Susceptibility - Other: 
Termite Resistance:Not Resistant
1 - non-combustible2 - reasonably non-combustible3 - slightly combustible4 - combustible

Fire Properties Group
Number:

Average Specific Extinction Area:

<250

Bushfire Resistance:

BAL 12.5 and 19 – All AS3959 required applications