Two Great Hardwoods, One Tough Choice
Walk into any timber yard and you'll likely find both oak and walnut prominently displayed. Both are prized hardwoods with long histories in fine furniture and cabinetry. But they have genuinely different characteristics, and choosing between them can significantly affect the look, workability, and longevity of your finished piece.
This guide covers the key differences to help you make the right call for your next project.
Appearance and Grain
Oak
Oak has a pronounced, open grain with strong medullary rays — those distinctive fleck patterns visible when the wood is quarter-sawn. It ranges in colour from pale cream to light golden-brown. European oak and American white oak share similar characteristics, though American red oak has a slightly warmer, more pinkish hue. Oak's bold grain makes it highly expressive; it rarely disappears into the background.
Walnut
Walnut has a finer, straighter grain than oak, with a rich chocolate-brown colour that can include purple and grey tones. The heartwood is darker and more uniform, while the sapwood is pale cream. Walnut has a natural lustre that responds beautifully to oil finishes. Its subdued, sophisticated grain suits contemporary and mid-century modern furniture styles particularly well.
Hardness and Durability
| Property | European Oak | American Black Walnut |
|---|---|---|
| Janka Hardness | ~1,120 lbf | ~1,010 lbf |
| Density | ~720 kg/m³ | ~610 kg/m³ |
| Durability (outdoors) | Durable | Moderately durable |
| Resistance to wear | Excellent | Good |
Oak is the harder and denser of the two, making it the better choice for flooring, workbenches, or anything subject to heavy wear. Walnut, while still a hardwood, is softer and lighter — which actually makes it easier to work by hand.
Workability
Both woods machine and hand-work well, but they behave differently at the bench.
- Oak can be prone to tear-out when planing against the grain due to its open, interlocked fibres. Sharp tools and taking fine shavings are essential. Oak also contains tannins that react with iron, leaving dark stains if you use non-stainless fixings or let iron tools get wet on the surface.
- Walnut is generally regarded as easier to work — it planes, chisels, and routes cleanly with less tear-out risk. It also turns well on a lathe and carves beautifully. Gluing walnut requires good surface preparation, as its natural oils can inhibit adhesion if you're not careful.
Finishing
Oak's open grain benefits from a grain filler before applying fine film finishes, otherwise you'll see tiny pores in the final surface. It takes stain readily, though its strong grain can make it harder to achieve an even colour. Danish oil and hardwax oil are popular choices for oak furniture.
Walnut is stunning with nothing more than a few coats of pure tung oil or a penetrating hardwax oil. Its natural colour is already rich enough that many woodworkers choose to enhance rather than alter it. Walnut can darken significantly with UV exposure, so sealing it helps preserve its original tones.
Cost and Availability
Oak is generally more affordable and widely available in most regions. It's grown in large quantities across Europe and North America, making it a cost-effective choice for larger projects. Walnut is typically more expensive — especially figured or wide boards — and can be harder to source in larger dimensions. This makes it a premium choice often reserved for statement pieces or smaller items like boxes and small tables.
Which Should You Choose?
- Choose oak for flooring, dining tables, kitchen cabinetry, outdoor furniture, or any project needing toughness and durability.
- Choose walnut for heirloom furniture, decorative boxes, turned objects, desks, or pieces where rich colour and fine detail are priorities.
- Use both together — oak and walnut contrast beautifully in contrasting inlays or mixed-species panels.