Home / Wood Compare / Yellow Birch vs White Ash
Professional Comparison · Verified Engineering Data · Updated 19 July 2026
Yellow Birch VS White Ash
Which wood is better for your project? Scores are computed from the verified figures on each species page — how we score.
🥇
Yellow Birch
46/100 Library Score
🪵Hardwood💧Moisture Stable
- Leads on bending strength, stiffness — a narrow but consistent edge
🥈
White Ash
41/100 Library Score
🪵Hardwood💧Moisture Stable
- Close second across most categories
- Solid choice where its profile fits the project
Visual comparison
Yellow BirchWhite Ash
Winner by category
There isn't one universally best wood — there's a best wood for each purpose.
| Category | Winner |
|---|---|
| Durability | Tie |
| Stability | Tie |
| Hardness | White Ash |
| Strength (MOR) | Yellow Birch |
| Stiffness (MOE) | Yellow Birch |
| Flame spread | Tie |
| Machining ease | Tie |
| Lightness | White Ash |
Engineering data
| Property | Yellow Birch | White Ash |
|---|---|---|
| Janka Hardness | 1260WD lbf | 1320WD lbf |
| Density | 0.62FPL g/cm³ | 0.6FPL g/cm³ |
| MOE | 13.9FPL GPa | 12.0FPL GPa |
| MOR | 114.0FPL MPa | 106.0FPL MPa |
| Durability | Class 5 Not Durable | Class 5 Not Durable |
| Stability | Excellent | Excellent |
| Fire (E84) | Class B indicative | Class B indicative |
| Radial Shrink | 7.3WD % | 4.9WD % |
| Tangential Shrink | 9.5WD % | 7.8WD % |
| T/R Ratio | 1.3 | 1.59 |
Figures carry the same source status as the species pages they come from — verified where cited, indicative where marked.
Best for
| Application | Recommended | Suitability |
|---|---|---|
| Flooring / wear surfaces | 🥇 White Ash | ★★★★☆ |
| Furniture / interior joinery | 🥇 Yellow Birch | ★★★☆☆ |
| Structural / load-bearing | 🥇 Yellow Birch | ★★★★☆ |
Advantages & limitations
Yellow Birch
Advantages
- Very low movement in service
Limitations
- Not durable outdoors untreated (Class 5)
White Ash
Advantages
- Very low movement in service
Limitations
- Not durable outdoors untreated (Class 5)
Recommendation
Choose Yellow Birch if…
- You want the stronger all-round engineering profile
Choose White Ash if…
- Its profile matches the application better than a single overall score
Frequently asked questions
Which is more durable, Yellow Birch or White Ash?
Neither — both carry the same EN 350 rating (Class 5, Not Durable). For outdoor decisions between them, weigh dimensional stability and hardness instead.
Which wood is better for outdoor use?
They are closely matched outdoors — durability and stability come out almost level. Let the application decide: harder surface for decking traffic, lighter weight for cladding.
Is Yellow Birch harder than White Ash?
No — White Ash is harder (Janka 1320 vs 1260 lbf).
How we score. Each wood gets a weighted composite of the verified figures shown above: durability 22%, stability 18%, hardness 12%, bending strength 12%, machining ease 12%, stiffness 8%, flame spread 8%, lightness 8%. The Library Score is that composite's percentile rank within our 60-species library — 50 means the library median, 90 means it outperforms nine of every ten species we cover. No price data is scored — cost guidance is qualitative. The score summarises the data; it does not replace judgement about your specific application.