Graded Oak Sleeper

Oak has a very good steam bending classification, but is liable to blue stain if in contact with iron compounds.

It dries very slowly with a tendency to split and check. Medium movement in service.

The heartwood is durable, extremely resistant to preservative treatment, but the sapwood is permeable. The acidic nature of oak will affect metals in indirect contact and cause corrosion. Non-ferrous or galvanised metals should be used.