Pinus radiata
Accoya
Also known as: Acetylated Pine, Accoya Color Grey
Timber GrainAbout this Timber
General Description
Accoya is a high performance modified timber produced through the acetylation of sustainably grown radiata pine. This process enhances the wood's durability, stability and overall performance while keeping it non-toxic.
Accoya is light in colour, typically a pale blonde to cream tone, with a uniform grain and minimal natural variation. When exposed outdoors without coating, Accoya will weather naturally to a silver grey. It is supplied dry with an average moisture content below four percent.
Accoya Color Grey: A pre-coloured version produced by impregnating the timber with a non-toxic water-based pigment system. The colour penetrates from surface to core, providing a consistent grey tone throughout the board. The pigment system is fade resistant and leach resistant, while retaining the same durability and dimensional stability as standard Accoya.
Working Properties
How This Timber Works
Accoya machines extremely well despite being modified timber. It cuts cleanly, planes smoothly and sands evenly. Its stability results in reduced movement and longer coating life. Accoya glues well and is excellent for precision joinery and profiles requiring tight tolerances.
Mechanical Properties
Accoya retains the inherent strength of radiata pine while gaining enhanced stability. It is highly resistant to swelling, shrinkage and distortion.
Technical Data
Technical Specifications
*Air Dry Density (kg/m³) is an average indication only and actual values may vary. Refer to strength, shrinkage and durability classification tables for full details.
Reference Tables
Timber Classification Tables
Standard NZ classification tables for strength groupings, shrinkage and durability. This species is highlighted in each table.
| Strength Group | Modulus of Rupture | Modulus of Elasticity | Max Crushing Strength |
|---|---|---|---|
| S1 | 103 | 16300 | 52 |
| S2 | 76 | 14200 | 43 |
| S3 | 73 | 12400 | 36 |
| S4 | 62 | 10700 | 31 |
| S5 | 52 | 9100 | 26 |
| S6 | 43 | 7900 | 22 |
| S7 | 36 | 6900 | 18 |
| Strength Group | Modulus of Rupture | Modulus of Elasticity | Max Crushing Strength |
|---|---|---|---|
| SD1 | 150 | 21500 | 80 |
| SD2 | 130 | 18500 | 70 |
| SD3 | 110 | 16000 | 61 |
| SD4 | 94 | 14000 | 54 |
| SD5 | 78 | 12500 | 47 |
| SD6 | 65 | 10500 | 41 |
| SD7 | 55 | 9100 | 36 |
| SD8 | 45 | 7900 | 30 |
| Description of Shrinkage | Tangential | Radial |
|---|---|---|
| Very Low | 0 – 3.5 | 0 – 2 |
| Low | 3.5 – 5.0 | 2 – 3 |
| Medium | 5.0 – 6.5 | 3 – 4 |
| High | 6.5 – 8.0 | 4 – 5 |
| Very High | > 8.0 | > 5 |
| Grade of Durability | Fully Protected | Above Ground, Exposed | In-Ground, Exposed |
|---|---|---|---|
| Very Durable | > 50 | > 40 | > 25 |
| Durable | > 50 | 15 – 40 | 15 – 25 |
| Moderately Durable | > 50 | 7 – 15 | 5 – 15 |
| Non-Durable | > 50 | 0 – 7 | 0 – 5 |
Applications
Main Uses
Stock & Sizes
Availability
Accoya: thicknesses ranging from 25mm to 75mm, with varying widths subject to availability, across weatherboard, fascia, mouldings, TG&V panelling, D4S and rough sawn profiles.
Accoya Color Grey: 25mm and 32mm thicknesses only, across selected weatherboard, fascia, mouldings, TG&V panelling, D4S and rough sawn profiles.
Quality Standard
