Abies alba
Silver Fir
Spruce without the resin. The softest species in the KORENA catalogue, and the best softwood here for a painted finish.
- Odlat och avverkat i Europa.
- Botanisk grupp. Barrträ kommer från barrträd, lövträ från bredbladiga träd.
- Den botaniska familj som träslaget tillhör.
Få besked när det kommer inReferensträslag. Inga plankor i lager just nu.
Passar det ditt projekt?
Passar bra för
- Wall and ceiling panelling
- Painted furniture
- Lightweight carcass work
- Shelving
- Interior joinery
Ingen Silver Fir i det aktuella släppet
Liknande träslag i lager
Ingen Silver Fir just nu. De här träslagen passar samma projekt och finns i lager.
Få besked om Silver Fir
Vi skickar e-post när nya plankor i Silver Fir kommer till KORENA. Varje exemplar är unikt, så det är bra att få besked tidigt.
Träets utseende
Så ser det ut
Very close to Norway Spruce in appearance and routinely sold interchangeably with it. Silver Fir is a shade duller and greyer, entirely without the resin pockets that mark spruce, because the species has no resin canals in its wood. Grain is straight, texture fine and even, and the overall impression is flatter and quieter than spruce.
- Near white to pale grey-brown, duller than spruce
- No visible heartwood boundary
- No resin pockets, the clearest way to tell it from spruce
- Pale, straight grain; almost no resin canals.
Bearbetning
Så bearbetas det
Generally easy with both hand and machine tools, and it glues, stains and finishes better than spruce because the absence of resin canals makes absorption more even. The same softness caveat applies: sharp cutters are essential or the earlywood crushes and fuzzes. It holds detail poorly under carving tools, so it is not a carving wood despite being soft.
Ytbehandling
Takes stain and finish noticeably better than spruce, though it is still a softwood with uneven density and a conditioner remains sensible before pigment stain. It is one of the better softwood choices for a painted finish, since the fine even texture needs little grain filling. Clear finishes leave it looking pale and slightly cool.
Torkning
Dries readily and without much degrade, and because there are no resin canals there is no resin bleed to manage, which is a genuine advantage over spruce in thick sections. Wet pockets of bacterially infected wood, sometimes called wetwood, occur in older trees and dry slowly and unevenly. A yard that has kilned the stock properly will have caught these. Movement in service is moderate at around 12.8 percent volumetric.
Hur mycket kommer det att röra sig?
Trä sväller och krymper över bredden när luften blir fuktigare och torrare. Beräkna årstidsrörelsen hos en skiva i Silver Fir innan du utformar infästningarna.
Förväntad årstidsrörelse
cirka 9,9 mm
Fäst skivan med sargar eller beslag med spår, inte med lim eller hårt åtdragna skruvar.
Linjär krympningsmodell: bredd × (krympning ÷ 28 % fibermättnad) × årstidsvariation i fuktkvot. Använder 8,7 % tangentiell krympning för Silver Fir. Ett planeringsvärde, inte en garanti.
Vad det kostar
Säkerhet och inköp
- Odlat och avverkat i Europa.
- Status på IUCN:s rödlista: den globala bedömningen av träslagets bevarandestatus.
Species in the Abies genus have been reported to cause skin irritation, though severe reactions are uncommon. Standard dust extraction and a P2 mask for extended machining cover it.
Läs hela guidenFördjupning om ådring, färgförändring, bearbetning och stabilitet.
What Silver Fir actually is#
Abies alba is the tree most people have looked at without knowing it. It is a major component of central European mountain forest, it is the traditional Christmas tree across much of the continent, and its timber is sold through the trade as whitewood alongside Norway Spruce with little distinction drawn between them. For most construction purposes that conflation is harmless. For slab work it is worth separating, because the one structural difference between the two species changes how the wood behaves.
Silver Fir has no resin canals. Spruce does. Everything that follows from that, the absence of resin pockets, the cleaner behaviour under paint, the more even stain absorption, the lack of bleed in thick sections, is the reason to choose fir over spruce rather than treat them as the same board.
Reading a Silver Fir slab#
Colour range is narrow: near white through to a pale grey-brown, with no heartwood boundary to speak of. Against spruce it reads flatter and cooler, a fraction duller, and without the amber flecking that gives spruce its visual interest.
Because colour gives you so little, judge the slab on ring structure and defects. Tight rings from slow mountain growth mean a denser, stiffer, more stable board. Knots are the usual limiting factor, and fir knots are somewhat less hard and less prone to tear-out than spruce knots, which makes them slightly easier to machine through when you have no choice.
The specific thing to look for is wetwood, a bacterially affected zone carrying abnormally high moisture that occurs in some older trees. It dries slowly and unevenly and can leave a localised darker stain or a collapsed area. Properly dried stock has already revealed any of it. Since every KORENA slab carries a measured moisture value rather than an assurance, an unevenly dried board shows up in the data.
Köparnas frågor
Frågor som köpare ställer
How do I tell Silver Fir from Norway Spruce?
Look for resin pockets. Spruce has resin canals and shows amber pockets and streaks; Silver Fir has none at all, so a clean pale board with no resin marks is almost certainly fir. Fir also reads slightly greyer and duller. The two are close enough that they are frequently sold interchangeably as whitewood.
Is Silver Fir better than spruce for painted work?
Yes, generally. The fine even texture needs little grain filling and the absence of resin canals means no bleed-through under paint. Spruce resin pockets can telegraph through a painted finish months later unless sealed with shellac first.
Can I use Silver Fir outdoors?
Not untreated. It is rated non-durable to perishable with little resistance to insect attack, which is the lowest durability in this group. European larch or Douglas fir are the appropriate choices for exposure.
Is it hard enough for a desk top?
At 1,420 N Janka it is the softest species KORENA lists, softer even than spruce. A desk top in fir will mark under a pen pressed through paper. It works for a light-use surface finished in a refreshable hardwax oil, but for daily writing use a harder species.
Mekaniska egenskaper
Tekniska data
Publicerade referensvärden. När källorna skiljer sig åt visas intervallet och det typiska värdet används i skalorna ovan.
| Densitet (kg/m³)Massa per kubikmeter vid cirka 12 % fuktkvot. Tyngre trä är oftast hårdare och starkare. | 415 kg/m³ |
|---|---|
| Janka-hårdhet (N)Kraften som krävs för att pressa in en stålkula halvvägs i träet. Standardmåttet på motstånd mot märken. | 1,420 N |
| MOR: böjhållfasthet (MPa)Böjhållfasthet: belastningen då en balk går av. | 66 MPa |
| MOE: elasticitetsmodul (GPa)Böjstyvhet: hur mycket en hylla eller skiva böjer ned under belastning. | 8.3 GPa |
| Radiell krympningKrympning tvärs årsringarna, från rått till ugnstorrt. Kvartssågade brädor rör sig så här. | 4.0 % |
| Tangentiell krympningKrympning längs årsringarna. Plainsågade brädor och de flesta plankor rör sig så här. | 8.7 % |
