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Oak, European
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Oak, European
Botanical Name: Quercus robur, Quercus petraea
Common Name(s): Croatian Oak, Slavonian Oak
Origin: Europe
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| General: |
The sapwood is 25 to 50mm wide is lighter in colour than the heartwood which is yellowish – brown. The annual rings are clearly marked alternating zones of early – wood consisting of large pores and dense late – wood.
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| Seasoning: |
Dries slowly and care is needed. |
| Working: |
In general, Oak finishes well from the planer or moulder although in some cases a reduction of cutting angle to 20º may be required. The timber can be stained, polished, waxed and glued satisfactorily, Pre boring when screwing or nailing near edges is recommended. It takes liming and fuming treatments well. |
| Uses: |
An ideal timber for many uses in boatbuilding. It is also used for high-class joinery, furniture, coffins, ecclesiastical works such as pews, rood screens, pulpits and flooring. |
| Availability |
| Stocked: |
Yes |
| Price: |
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| Availability: |
Available ex-stock in Random Widths in 25, 40 and 50mm thicknesses. |
| Supply - Resource Certification |
| Durability - Durability |
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Durability (In Ground)
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| Durability (Above Ground): |
Moderately Durable |
| Density |
| Density Air Dried | 670 - 720 kg/m² |
| Shrinkage |
| Shrinkage Radial | 3.0 % (Green to 12% MC) |
| Shrinkage Tangental: |
6.0 % (Green to 12% MC) |
| Stability |
| Stability | Reasonably Stable |
| Mechanical Properties |
| Mechanical Links |
Janka Hardness:
(Average) |
5.5 kN |
| Modulus of Rupture / Bending Strength: |
97 MPa (N/mm² or MN/m²) |
| Modulus of Elasticity / Stiffness: |
10 GPa (GN/m²) |
| Maximum Crushing Strength: |
52 MPa (N/mm² or MN/m²) |
| Strength Group Unseasoned: |
S5 |
| Strength Group Seasoned: |
SD5 |
| Moisture Meter Reading Corrections |
| Moisture Meter Reading Corrections |
| Moisture Meter Reading Corrections: | Meter Reading (% moisture content) 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Correct Moisture Content - 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 |
| Fire Indicies |
Ignitability Index:
(NZ/AS 1530.3) | |
Flame Spread Index:
(NZ/AS 1530.3) | |
Heat Evolved Index:
(NZ/AS 1530.3) | |
Smoke Developed Index:
(NZ/AS 1530.3) | |
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