| Name | Rock Elm (Ulmus thomasii) |
| Type | Hardwood. |
| Other Names | Also known as hard elm, cork elm and hickory elm. |
| Sources | Grows in eastern half of United States and southern Canada. |
| Appearance | Straight or interlocked grain with a coarse texture. Light brown to brown heartwood, usually with a reddish tinge, and light brown to brown sapwood. |
| Physical Props | Heavy, hard, tough, difficult to split, wear and shock resistant. Low decay resistance and moderate dimensional stability. Steam-bends very well. |
| Working Props | Works with some difficulty – hardness tends to dull cutting edges. Finishes reasonably well. Glues, screws and nails satisfactorily. |
| Uses | Uses are similar to those of American and slippery elm but it is better suited to applications requiring hardness and greater strength. This includes farm vehicles, machinery parts, skids, cooperage, wheels and millwork. |
