Wood stair treads bring a class to the aesthetics. The wood requirements for outdoor stair treads and indoor stair treads are different. You need a more durable wood for the outdoors. To select the wood for stair tread construction, you need to know the wood species and the sawing method of the timber.
All the species of wood have different durability, grain, and hardness. Softwoods are not a good option because they are vulnerable to scratches, dings, and dents. The hardness of any wood depends on its molecular structure. To know the hardness scale of a wood, you can check its Janka scale. Ironbark, Spotted Gum, and Blackbutt are among the hardest timbers in Australia. The harder the wood, the more resilient it is.