Historical
BS EN ISO 6507-4:2005
Metallic materials. Vickers hardness test. Tables of hardness values (British Standard)
ISO 6507-4:2005 gives tables of Vickers hardness for use in tests made on flat surfaces.
British Standards Institution [bsi]
ISO 6507-4:2005 gives tables of Vickers hardness for use in tests made on flat surfaces.