Health Is Walnut good for desk? Is Walnut good for desk? In physical properties, walnut is a hardwood with great strength. ... With proper maintenance, you'll be able to keep the walnut computer desk last long. According to the Janka hardness test, walnut has a medium dese with a rating of 1010. Related Posts:Is Walnut a good wood for floors?Is walnut oil or linseed oil better for oil painting?Are walnut trees profitable?What is the temperature of a grill?