How do you test hardness of wood?
Matthew Underwood
Updated on May 02, 2026
The Janka hardness test (from the Austrian-born emigrant Gabriel Janka, 1864–1932) measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an 11.28 millimetres (0.444 in) diameter steel ball halfway into a sample of wood.
Furthermore, which type of wood is the hardest?
The hardest commercially available hardwood is hickory, and it is five times harder than aspen, one of the “soft” hardwoods.
Additionally, how hard is alder on the wood hardness scale? 590
In respect to this, what is the hardness of poplar wood?
The Janka Hardness Values and Hardness Grades for some common Wood Species
| Wood | Janka Hardness (N) | Hardness Grades |
|---|---|---|
| Chestnut | 2400 | |
| Poplar | 2400 | |
| Hemlock | 2200 | |
| White Pine | 1900 | Very soft |
What is the hardness of pine wood?
Pine shows up in many forms on the Janka hardness scale, with Eastern white pine ranking 380, making it softer than basswood, while white pine ranks 420 on the same scale, slightly harder than basswood. Some of the harder varieties of pine are true pine at 1570 and red pine at 1630 on the Janka scale.
Related Question Answers
What is the most expensive wood in the world?
World's Most Expensive Wood In The World- African Blackwood – $ 10,000 Per Kilogram. Source: Link.
- Agar Wood – $ 10,000 Per Kilogram. Source: Link.
- Ebony – $ 10,000 Per Kilogram. Source: Link.
- Sandalwood – $ 20,000 Per Kilogram.
- Pink Ivory – $ 7-8 Per Board Feet.
- Lignum Vitae – $ 5 Per Pound.
- Purple Heart – $ 11.99 Per Board Feet.
- Dalbergia – $ 14-16 Per Board Feet.
What is the heaviest and hardest wood in the world?
4,570 lbf (20,340 N) From the Spanish “quebrar hacha,” which literally means “axe breaker.” Aptly named, wood in the Schinopsis genus is among the heaviest and hardest in the world.What is the softest wood in the world?
BalsaWhat's the strongest wood in the world?
Australian Buloke An ironwood tree that is native to Australia, this wood comes from a species of tree occurring across most of Eastern and Southern Australia. Known as the hardest wood in the world, this particular type has a Janka hardness of 5,060 lbf.What is the strongest wood in America?
hickoryWhat wood is harder than oak?
Tight-grained maple is harder than broad-grained oak. Maple is harder than oak. But hardness doesn't always translate into durability. Harder woods can be susceptible to decay, while softer wood resists it.What is the hardest wood to split?
The hardest firewood to split, at least in my opinion, is elm, sweetgum and cotton wood. It's 'hard' to explain why these three can be so hard to work with, but one thing is certain – if you want to have a better time making firewood, avoid them if you can.Is Apple wood hard or soft?
Hardwoods typically are used in furniture, flooring, musical instruments, and veneers. Examples of hardwood trees: All fruit trees (apple, banana, cherry, citrus, fig, jujube, mulberry, olive, pawpaw, pear, plum, quince, etc.) All nut trees (buckeye, butternut, chestnut, hickory, oak, walnut, etc.)Is poplar wood stronger than pine?
Poplar wood is considered a hardwood by species, but this can be somewhat confusing, as it is typically softer than pine, a common softwood. In most instances, poplar (or at least the wood sold as poplar in home centers) is actually the wood from the tulip tree.Is poplar wood hard or soft?
Poplar. Poplar is a hardwood tree that produces soft wood when compared to other hardwood trees. The hardness of poplar is about on par with that of pine or cedar, but the cellular structure gives it a much finer grain and more pleasing appearance than the more coarsely grained softwoods.Does rubberwood scratch easily?
Rubberwood is strong, it has a Janks score of 980 lbs which makes it harder than some coniferous species so will not scratch easily having approximately the same hardness as walnut and teak but a little bit softer than oak.What does poplar wood look like?
Poplar is one of the most common utility hardwoods in the United States. Its sapwood is white, sometimes with stripes; the heartwood is usually tan, but can range from greenish brown to dark green, purple, black, blue and yellow. The wood is straight grained, uniform in texture and moderate to light weight.Which is harder walnut or oak?
The Janka hardness test looks at how resistant a kind of wood is to denting and wear. White oak has an average Janka hardness rating of 1360, and red oak is 1290. On the same scale, walnut has a Janka score of around 1000. Walnut floors usually are softer than oak, as they have a wider grain.Why is poplar wood green?
So why isn't poplar popular with furniture makers? The answer is simple: The wood is just plain homely. Its color ranges from pale yellowish white to an odd shade of green, and boards are often discolored by dark gray or purplishstreaks. To top it off, poplar doesn't stain well with traditional wood stains.Is Pine softer than cedar?
Hard or Soft The Janka scale ranks all wood for hardness, with a higher number correlating with a harder wood. The rating for white pine, one of the most common varieties, is 420. Yellow pine earns an 870, while cedar comes in at an even 900. For the sake of comparison, red oak gets a 1,290 on the Janka scale.What wood is least likely to warp?
RedwoodIs Poplar a good wood?
Poplar is renowned for its ability to take paint well. It is the wood stock of choice when building woodworking projects that need to be painted. It is relatively resistant to decay, and when sanded, primed, and painted thoroughly, it should hold up well to normal wear and tear for many interior projects.Is Alder an expensive wood?
Cost. One of the biggest benefits of alder wood is the cost. It's not quite as cheap as it used to be when it was referred to as "poor man's cherry," but there's still a considerable price difference between it and more expensive hardwoods, such as mahogany. Alder is about in the middle of the road of hardwood prices.Is Alder a soft or hard wood?
Alder is a relatively soft hardwood of medium density that has low bending strength, shock resistance, and stiffness. Available in dimension stock and lumber. Furniture, kitchen cabinets, doors, shutters, moulding, panel stock, turnings, carvings, and kitchen utensils.Which is harder birch or oak?
Birch is a hardwood harvested in most of the Northern Hemisphere. And even though it is a relative to the oak, the lumber is much harder than oak.How hard is cocobolo wood?
Cocobolo| Botanical Name | Dalbergia retusa |
|---|---|
| Workability | Challenging |
| Avg Dry Weight - LB/FT3 | 69 |
| Avg Dry Weight - KG/M3 | 1095 |
| Janka Hardness - LBF | 2960 |
