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Air-dried timber
Timber that is dried by exposure to air in a yard or shed, without artificial heat (also see seasoning).

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Red Stringybark | Eucalyptus macrorhnycha

Red stringybark has pale red or pinkish-brown heartwood, making it ideal for cabinetmaking as well as various applications in engineering and construction.

Red Stringybark is a native Australian hardwood timber widely used in engineering, light construction and cabinetmaking.

Red Stringybark is a moderately durable hardwood species native to southeast Australia. It is used in a variety of applications, including light construction, engineering and cabinetmaking.

Overview
Properties
Description
Applications
Suppliers

Overview

Red Stringybark is a medium-sized hardwood species native to southeast Australia. It features pale red or pinkish-brown heartwood, with cream-coloured sapwood approximately 50 millimetres wide. Red Stringybark timber is close-textured. Interlocking of its grain often produces an attractive fiddleback figure.

Uses of this moderately durable timber range from light construction (fencing, framing, weatherboards, posts, poles) to engineering (sleepers, utility pole cross-arms, bridge and wharf construction). Red Stringybark has also found favour as a cabinet timber in the manufacture of furniture and bench tops.

The timber of this species machines, routs, saws and sands well. It occasionally exhibits some natural feature and surface cracking. It is amenable to the use of standard fastenings and fittings. Due to the timber’s natural density, polyurethane glues are best for bonding Red Stringybark, The timber accepts most standard coatings, and responds particularly well to oil-based finishes.

Red Stringybark timber products are not very common and supplies are usually limited.

Properties

Shrinkage

	Very Low	Low	Medium	High	Very High
Tangential:
Tangential:	0.0
Radial:	0 - 2

Strength Group

	Very High	High	Reasonably High	Medium High	Medium	Reasonably Low	Low	Very Low
Unseasoned:	S1	S2	S3	S4	S5	S6	S7
Unseasoned:
Seasoned:	SD1	SD2	SD3	SD4	SD5	SD6	SD7	SD8
Seasoned:

Stress Grade

	Structural No. 1	Structural No. 2	Structural No. 3	Structural No. 4	Structural No. 5
Unseasoned:	F17	F14	F11	F8	F7
Seasoned:	F22	F17	F14	F11	F8

Density per Standard

Unseasoned:	1060 kg/m³
Seasoned:	900 kg/m³

Joint Group

	Very High	High	Reasonably High	Medium	Low	Very Low
Unseasoned:	J1	J2	J3	J4	J5	J6
Unseasoned:
Seasoned:	JD1	JD2	JD3	JD4	JD5	JD6
Seasoned:

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:	89
Modulus of Rupture - Seasoned:	123
Modulus of Elasticity - Unseasoned:	11
Modulus of Elasticity - Seasoned:	16
Maximum Crushing Strength - Unseasoned:	43
Maximum Crushing Strength - Seasoned:	63
Impact - Unseasoned:	13
Impact - Seasoned:	16
Hardness - Unseasoned:	6.6
Hardness - Seasoned:	8.7

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
Termite Resistance:	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-
Average Specific Extinction Area:	<250
Bushfire Resistance:	BAL 12.5 and 19 – All AS3959 required applications

Description

Botanical Name:	Eucalyptus macrorhnycha
Preferred Common Name:	Red Stringybark
Species Type:	Hardwood

Appearance

Red Stringybark features pale red or pinkish-brown heartwood with a creamy sapwood approximately 50 millimetres wide. Its grain is close-textured, and interlocking often produces an attractive fiddleback figure.

Common Applications

Uses of this moderately durable timber range from light construction (fencing, framing, weatherboards, posts, poles) to engineering (sleepers, utility pole cross-arms, bridge and wharf construction). Red Stringybark has also been successfully used as a cabinet timber in the manufacture of furniture and benchtops.

Common Form

Sawn

Workability

Red Stringybark machines, routs, saws and sands well. The timber will occasionally exhibit some natural feature and surface cracking. It accepts standard fastenings and fittings. Polyurethane glues are best for bonding Red Stringybark, due to the timber’s natural density. The timber readily accepts most standard coatings, and particularly for cabinetmaking purposes, responds well to oil-based finishes.

Origin of Timber

NSW, VIC, SA

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