Materials Selection and Testing

- Manganese metal - There is a natural desire to employ materials of high strength and satisfactory fracture toughness for pressure vessels, this makes manganese metal ideal for this type of use. This type of metal has 1.5% manganese added which increases its shock resistance considerably. However, the principal manganese steels contain between 12 - 15% manganese and have very distinct work hardening qualities. They can be forged and machined. Their surfaces harden very rapidly when subjected to heavy wear, whilst the underlying metal remains tough.…