Wutong wood is generally harder than oak. This conclusion is based on several factors, including wood density and hardness ratings.

Wutong wood, also known as hard maple, has a Janka hardness rating of around 2,100 pounds per square inch (psi). This rating is significantly higher than the Janka hardness of oak, which typically ranges from 1,290 to 1,360 psi. The Janka hardness test measures the force required to embed a .444-inch steel ball halfway into a wood sample, providing a standardized measure of wood hardness. The higher the Janka rating, the harder the wood.

The hardness of Wutong wood is attributed to its dense grain structure and high density. This makes it a durable and resilient material, suitable for applications requiring strength and resistance to wear and tear. Wutong is often used in high-end furniture, flooring, and architectural projects due to its exceptional hardness and aesthetic appeal.

In contrast, oak is a popular choice for furniture and construction due to its workability and attractive grain patterns. However, its lower hardness rating compared to Wutong makes it more susceptible to dents and scratches. While oak is still a strong and durable wood, it may not be as suitable for applications where extreme hardness is required.

In summary, Wutong wood is harder than oak, primarily due to its higher Janka hardness rating and denser grain structure. This makes Wutong a superior choice for applications where strength and resilience are paramount.