Radiata Pine

Radiata Pine is a versatile timber widely used for structural and decorative applications including framing, lining, glue-laminated beams, plywood, and exposed structural and nonstructural applications if treated.

When appropriately treated, Radiata pine can be used for many exposed structural and non-structural applications.

The timber is low in density and fairly soft, often with very wide annual growth rings. Heartwood is light brown to yellow, the sapwood white to pale yellow, but often indistinct. The grain is usually straight, but knots are common. 

Radiata pine is very easy to work with standard tools, although its knotty character and resin canals can cause premature blunting of cutters. Its open grain structure readily accepts preservative treatment, which can provide protection to hazard level 6 (the highest level).

Radiata Pine Products & Applications

Quality assured Radiata Pine products are available from these suppliers:

The Tasmanian Timber Quality Assurance Program assesses nominated products for Australian Standards compliance through a quarterly mill audit. Buyers can trust that the guaranteed products from our suppliers come from a company that employs sustainable practices, holds Chain-of-Custody, and Responsible Wood accreditation.

Radiata Pine Properties

Pinus radiata

For further information click tables marked  

Availability & Appearance
General Availability
Freely available and continuously harvested.
Appearance Grade
Available
Plantation
Available
Structural Grade
Available
Veneer
Sizes
Dressed seasoned timber 40 to 190 mm wide by 12 to 90 mm thick. Undressed seasoned timber 50 to 200 mm wide by 19 to 100 mm thick. Lengths up to 5400 mm long are available, with the bulk of production between 2400 and 4800 mm long.
Colour
Cream to light straw.
Grain
Grain is usually straight. Knots are common and growth rings are prominent.
Texture
Fine but uneven.
Density  
Unseasoned
Seasoned
Density (per standard)
800 kg/m3
550 kg/m3
Durability  
Above-Ground
Class 4: 0-5 yrs
In-Ground
Class 4: 0-7 yrs
Susceptible to Lyctid Borer
No
Marine Borer Resistance
0-20 yrs (usually 5 yrs)
Termite Resistant
No
Environmental Details
Resource
Plantation
Reserves
28% of Tasmania's plantations are Radiata Pine
Certification
Available
Chain of Custody
Available
Carbon Storage
242 kg/m3
R Values
0.74 (100mm)
Fire Properties  
Average Specific Extinction Area
< 250 m2/kg
Bushfire Resistance
BAL 12.5 & 19 - All AS 3959 Required Applications
Critical Radiance Flux - Higher
> 2.2 < 4.5; same for ply ≥ 17mm kW/m2
Critical Radiance Flux - Lower
> 2.2 < 4.5; same for ply ≥ 17mm kW/m2
Smoke Development Rate
< 750; same for ply ≥ 17mm% per min
EFH Ignitibility: 14
EFH Smoke-Develop Index: 3
EFH Spread-of-Flame Index: 7
Fire Properties Group Number: 3
Joint  
Unseasoned
Seasoned
Joint Group
J4
JD4
Mechanical Properties  
Unseasoned
Seasoned
Hardness (Janka)
2.1 kN
3.3 kN
Impact
12 J
6.9 J
Maximum Crushing Strength
19 MPa
42 MPa
Modulus of Elasticity (MOE)
8 GPa
19 GPa
Modulus of Rupture (MOR)
42 MPa
81 MPa
Toughness (IZOD)
15-24 Nm
Low - up to 15 Nm
Movement  
Radial
0.27% per 1% MC change
Tangential
0.20% per 1% MC change
Shrinkage  
Radial
3%
Tangential
5%
Stress  
Unseasoned
Seasoned
Common Structural Grades
Structural #3: F5
Structural #3: F8
Structural Grades
S1:F8, S2:F7, S3:F5, S4:F4
S1:F14, S2:F11, S3:F8, S4:F7, S5:F5
Strength  
Unseasoned
Seasoned
Strength Group
S6
SD6
Workability
General Workability
Usually easy to work away from knots.
Bending
A good bending timber. 25mm material bends well to a radius of 100mm.
Blunting
Moderate. Can be severe in knotty material.
Boring
Easy to drill. Holes tend to be oversize.
Finishing
Readily worked to a smooth, flat surface. Stains readily, and finishes adhere very well.
Gluing
Glues well with most common adhesives.
Moulding
Satisfactory
Nailing
Very easy to nail. Twisted shank nails may be necessary to achieve satisfactory hold.
Planing
Smooth surfaces easy to attain. Knots can be hard on cutters.
Rebating + Mortising
Generally produces good results.
Sawing
Easy, normally fairly clean.
Turning
Satisfactory. Density variations across growth rings can cause problems.

Sources: Centre for Sustainable Architecture with Wood (CSAW), Wood Solutions

The Tasmanian Timber Expert Helpline is a free service operated by the Centre for Sustainable Architecture with Wood at the University of Tasmania; providing advice on choosing the right timber, obtaining quotes from suppliers, and troubleshooting problems.

Call the Helpline 1300 041 766

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