ACROSS

4. The depth of fusion in a welded joint (11).

7. A mixture of two or more molten metals (5).

8. The process of cooling and heating carbon tool steel to incress hardness and tensile strength (9).

10. Rounded outwards, bulging (6)

11. The breaking of fracturing on metal due to constant, repeated stress (7).

12. The ability of metals to be stretched without breaking (9).

DOWN

1. The process of softening metals by heating or cooling (9).

2. A support in which shaft rotates (7).

3. A pattern used as a guide in marking cutting, drilling (8).

5. Without error, within given tolerances (8).

6. A fault; to work improperly (11).

9. Circles having different centres (9).

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