Any chance it might be pecan?
Here's the bark if it's any help.
Here's what it looks like finished. Talked to the guy who cut the tree down. He said the leaves were identical to English walnut. The sap wood was bright yellow when freshly cut down.
I have a 100% ID now, Amur Cork. The cork part of the name comes from the thick corky bark, the wood is quite dense and hard. It's an invasive species from Asia. (isn't everything?) The bark and cambium are medicinal. It's used to make furniture in Asia. Google it. I'll be stocking up a gun or two with it as it's nice looking wood and hard.