Wednesday, 14 October 2015

TIMBER

There are two types of timber, called hardwood and softwood. These names do not refer to the properties of the wood: some softwoods can be hard and some hardwoods can be soft.

Softwood

Softwoods come from coniferous trees which are evergreen, needle-leaved, cone-bearing trees, such as cedar, fir and pine.

Hardwood

Hardwoods come from broad-leaved, deciduous trees. The main hardwood timbers are ash, beech, birch, cherry, elm, iroko, mahogany, meranti, oak, obeche, sapele and teak.

Properties and uses of hardwood timbers.

NamePropertiesUses
Ash AshLight, creamy-brown colour, open-grained,toughflexibleSports equipment, wooden ladders, tool handles
Beech BeechWhite to pinkish-brown in colour, close-grainedhard, tough, strongwarps easilyFurniture, toys, tool handles
Elm ElmLight to medium brown in colour, open and sometimes interlocking grain, tough, durable, resists splitting, durable in waterIndoor and outdoor furniture
Mahogany MahoganyPink to reddish-brown colour, fairly strong, durable, some interlocking grainGood quality furniture
Oak OakLight brown colour, strong, hard, tough, open-grained, corrodes steel screws and fittingsInterior woodwork, good quality furniture
FROM: http://www.bbc.co.uk/schools/gcsebitesize/design/resistantmaterials/materialsmaterialsrev1.shtml (14/10/2015)