Quercus rubra
Red Oak
Harder than European oak and cheaper, with pores open enough to blow air through. An interior wood, and only an interior wood.
- Kasvatatud väljaspool Euroopat ja imporditud Euroopa ladude kaudu.
- Botaaniline rühm. Okaspuid on paljasseemnetaimed, lehtpuid laialehised puud.
- Botaaniline sugukond, kuhu liik kuulub.
Saa saabumisel teavitusVõrdluspuiduliik. Praegu pole tükke laos.
Kas see sobib teie projektile?
Sobib hästi
- Interior furniture
- Flooring
- Cabinetry
- Painted and stained joinery
- Shelving
Puiduliiki Red Oak praeguses valikus pole
Sarnased puiduliigid laos
Puiduliiki Red Oak praegu pole. Need puiduliigid sobivad samadeks projektideks ja neist on tükke saadaval.
Saa teavitus puiduliigi Red Oak kohta
Saadame teile kirja, kui uued puiduliigi Red Oak plangud KORENAsse jõuavad. Iga tükk on ainulaadne, seega on varajasest teatest kasu.
Puidu välimus
Kuidas see välja näeb
Light to mid brown with a distinct reddish or pinkish cast that separates it clearly from the European oaks. Grain is straight and the texture coarse, with very large open pores in the earlywood. Those pores are the defining practical fact about this wood: they run continuously along the grain and are open enough that the species will not hold liquid, which is why red oak was never used for barrels.
- Light to mid brown with a reddish or pinkish cast
- Very large open pores in the earlywood
- Ray fleck present on quartersawn faces but finer than white oak
- Straight grain, coarse texture, very large open earlywood pores that run continuously along the grain. Light to mid brown with a distinct reddish cast.
Töötlemine
Töötlemine
Produces good results with hand and machine tools and it glues and finishes well. It blunts cutters moderately as all oaks do. The dimensional stability is described in the cited source as mediocre, so it moves more than its numbers alone suggest. The very large open pores require substantial grain filling for any smooth finish, more than European oak needs.
Viimistlus
Takes stain and finish well and is frequently stained to imitate more expensive species, which it does convincingly. The large open pores need heavy grain filling for a smooth surface. The reddish cast can fight a warm stain and go orange, so test on an offcut. Tannins react with iron exactly as in the European oaks, so brass or stainless fittings only.
Kuivatamine
Dries reasonably but shares the oak family requirement for a slow schedule, and it is prone to checking and honeycomb if pushed. Volumetric shrinkage of 13.7 percent with tangential at 8.6 against radial at 4.0 percent gives a wide ratio, so flatsawn boards cup. The cited source specifically notes mediocre dimensional stability in service, which is worth weighing against European oak for anything that must stay flat.
Kui palju see liigub?
Puit paisub ja kahaneb laiuses, kui õhk muutub niiskemaks või kuivemaks. Hinnake puiduliigist Red Oak lauaplaadi hooajalist liikumist enne kinnituste kavandamist.
Eeldatav hooajaline liikumine
umbes 9,8 mm
Kinnitage lauaplaat klotside või piluklambritega, mitte liimi ega pingul kruvidega.
Lineaarse kahanemise mudel: laius × (kahanemine ÷ 28% kiu küllastuspunkt) × niiskusesisalduse hooajaline muutus. Kasutab puiduliigi Red Oak puhul 8,6% tangentsiaalne kahanemist. Planeerimishinnang, mitte tagatis.
Kui palju see maksab
Ohutus ja hankimine
- Kasvatatud väljaspool Euroopat ja imporditud Euroopa ladude kaudu.
- IUCNi punase nimestiku seisund: selle liigi ülemaailmne looduskaitseline hinnang.
Oak is a documented sensitiser and reactions usually include eye and skin irritation. Severe reactions are rare. Repeated exposure to oak dust carries elevated nasal cancer risk, so extraction is not optional in a production setting.
Loe täielikku juhenditPõhjalikud märkmed mustri, värvimuutuse, töötlemise ja stabiilsuse kohta.
What Red Oak actually is#
Quercus rubra is the most commercially important hardwood in the United States and has been planted across Europe since the eighteenth century. European grown material is now common enough in the EU market that buying it does not necessarily mean importing from North America, which matters for both documentation and carbon.
It is harder than European oak, stiffer than European oak, and cheaper than European oak. It is also, in one specific and consequential way, a fundamentally different material.
The pores, which decide everything#
In white oak and the European oaks, the large earlywood pores are plugged with tyloses, balloon like ingrowths that seal the vessels. In red oak they are not. The pores run open and continuous along the grain.
The old demonstration is to take a short length of red oak, dip one end in soapy water and blow through the other. Bubbles come out. You cannot do that with white oak.
Everything practical about this species follows from that:
It was never used for barrels, because it will not hold liquid. It is rated non-durable to perishable with poor insect resistance, so it has no business outdoors. It is recorded in this catalogue as not food safe, unlike the European oaks, because open pores hold moisture and residue that a closed grain wood does not. And it needs far more grain filler than European oak to reach a smooth finish.
Ostjate küsimused
Ostjate küsimused
Why is Red Oak not suitable for outdoor use or barrels?
Its earlywood pores are very large and run continuously along the grain, so the wood behaves like a bundle of straws. Liquid passes straight through it, which is why white oak was always the cooperage timber and red oak never was. Combined with a decay rating of non-durable to perishable and poor insect resistance, it should be treated as an interior wood only.
Is Red Oak harder than European Oak?
Yes, measurably. It is 5,430 N on the Janka scale against 4,980 N for European oak, and its elastic modulus of 12.14 GPa is higher too. Hardness is not the reason to prefer European oak; durability, stability and colour are.
Is it safe for a cutting board?
KORENA records it as not food safe, and that is a deliberate distinction from the European oaks. The very large open pores hold moisture and food residue in a way closed grain species do not, and the wood is rated non-durable. For food contact choose hard maple or a similarly dense closed grain species.
How do I tell it from European Oak?
Mehaanilised omadused
Tehnilised andmed
Avaldatud võrdlusväärtused. Kui allikad erinevad, kuvatakse vahemik ja ülalolevatel skaaladel kasutatakse tüüpilist väärtust.
| Tihedus (kg/m³)Mass kuupmeetri kohta umbes 12% niiskusesisalduse juures. Raskem puit on tavaliselt kõvem ja tugevam. | 700 kg/m³ |
|---|---|
| Janka kõvadus (N)Jõud, mis on vajalik teraskuuli pooleldi puitu surumiseks. Standardne mõlgikindluse mõõt. | 5,430 N |
| MOR: paindetugevus (MPa)Paindetugevus: koormus, mille juures tala murdub. | 99 MPa |
| MOE: elastsusmoodul (GPa)Paindejäikus: kui palju riiul või lauaplaat koormuse all läbi paindub. | 12.1 GPa |
| Radiaalne kahanemineKahanemine risti kasvurõngastega toorest kuni täiesti kuivani. Nii liigub radiaalselt saetud saematerjal. | 4.0 % |
| Tangentsiaalne kahanemineKahanemine piki kasvurõngaid. Nii liiguvad tangentsiaalselt saetud lauad ja enamik planke. | 8.6 % |
