Silver Birch
Betula pendula
Also known as European birch, white birch · Botanical Betula pendula
Revision history
- — Data re-verified in site-wide audit (formulas, sources, durability classes)
- — Working properties and comparable-species data cross-checked against listed sources
About Silver Birch
Silver Birch (Betula pendula) is a mid-range timber, hard enough for everyday wear and still easy to work, with a Janka hardness of 1,210 lbf (5,382 N) and a density of about 0.61 g/cm³. It grows in Europe.
Radial 5.3% against tangential 7.8% is an unusually even T/R ratio of 1.47 — Silver Birch shrinks close to uniformly, which is why it holds a flat panel in interior joinery and furniture. Its fibre saturation point is near 29%. Below it this timber moves a great deal — 7.8% tangential — but evenly, at a T/R ratio of 1.47. Wide boards need genuine expansion room; they are less likely to cup than to simply change width. — wide boards need real expansion room, not a token gap.
At 610 kg/m³ a cubic metre of Silver Birch weighs about 610 kg air-dry — that figure, the 7.8% tangential and 5.3% radial movement and the 1,210 lbf hardness are the three inputs the calculators below actually consume. Select Silver Birch in any of them to get species-specific results for weight, moisture, shrinkage and hardness.
Working properties
How Silver Birch behaves at the bench and on the machine, drawn from European hardwood technical references and international wood-technology databases.
Durability & use classification
Silver Birch is rated non-durable (EN 350 Class 5) and is not suited to exterior use. You may see aggregator sites list it as suitable outdoors — the authoritative timber references do not support that, and it should be kept out of damp and ground contact.
Typical applications & suitability
Indoor — Indoor use. Birch earns its place on strength-to-weight, fine even texture and low cost rather than durability — and it is one of northern Europe's most commercially important timbers.
Documented end-uses: plywood above all — Baltic birch ply is the benchmark for void-free, high-ply-count panels — plus furniture and cabinetry, flooring and parquet blocks, interior trim and millwork, turnery and kitchen utensils, musical instruments, toys, skis, veneer, boxes and crates, and pulp.
Comparable species
Species closest to Silver Birch by density, hardness, stiffness and bending strength, computed directly from the Vriksai species dataset rather than hand-picked.
Trade alternatives. Its North-American twin is Yellow Birch (slightly harder and denser); for similar pale interior work, Hard Maple or European Beech. Figured ‘masur’ and curly birch are prized decorative variants of this same species.
Alternatives to Silver Birch
Silver Birch measures 1,210 lbf Janka at 0.61 g/cm³, EN 350 durability Class 5, movement rated Excellent. Silver Birch is rated Excellent for movement, which is usually why it was specified — so nothing below trades that stability down. Read the numbers against the Janka scale and EN 350 durability classes.
For furniture and interior joinery that needs to survive handling as well as humidity. Harder resists denting; check the movement figures have not worsened with it.
Easier to machine and to hand-finish, for interior work where the surface is not taking abuse.
Already well behaved — these are the few in our library that are measurably steadier still. Size the gaps with the shrinkage predictor and EMC calculator.
If Silver Birch is unavailable and the specification cannot change, these are the nearest substitutes across hardness, density, movement, stiffness, bending strength and durability class together — not on any single property. Lower distance means a closer match.
Silver Birch is EN 350 Class 5, so untreated exterior service is not advisable. These reach Class 1–2 at comparable hardness.
Computed from measured properties only — hardness, density, movement, stiffness, bending strength and EN 350 class. Price, availability and appearance are never inputs. Figures are representative values, not consignment absolutes: two species within a few percent are equivalent until verified on the material. Full method and the rules the engine cannot break.
Substitution is a match on durability class, movement and strength — not on colour or grain. Where two candidates are close, compare them directly before specifying.
Compare Silver Birch side by side
These comparisons turn on movement and finish quality more than on raw strength. Every pairing shows the measured figures side by side; full matrix in the comparison index.
Calculators relevant to Silver Birch
Weighted towards joinery and finishing, where Silver Birch is normally used. Full set in the tool index.
Understand the figures
Thermal conductivity — k-value and insulation behaviour · ThermoWood species guide — Thermo-D/Thermo-S treatment classes · Janka hardness scale — how the lbf figure is measured · Wood density reference — oven-dry vs air-dry basis.
Further reading. What is ThermoWood? · Wood moisture content explained · How to calculate board feet.
Common questions about Silver Birch
unverified no published source for this figure · WD The Wood Database (Eric Meier) · calc derived from the figures above · — no published source found
A note on the shrinkage figures. The Wood Database, which supplies the hardness and strength values above, records no shrinkage data for Betula pendula, and the USDA FPL Wood Handbook does not list this species either — it covers paper, yellow and sweet birch, which are different trees. The radial and tangential figures shown here therefore come from a European reference we cannot name precisely, and we would rather tell you that than let them pass as verified. Treat them as indicative. If you need movement figures you can stand behind, measure your own stock.