Nickel steel

Chromium steel

Nickel-chrome steel

High speed steel

High temperature and low strain rates favor brittle fracture.

Many metals with hexagonal close packed (H. C. P) crystal structure commonly show brittle fracture.

Brittle fracture is always preceded by noise.

Cup and cone formation is characteristic for brittle materials

13% carbon and 87% ferrite

13% cementite and 87% ferrite

13% ferrite and 87% cementite

6.67% carbon and 93.33% iron

13% carbon and 87% ferrite

13% cementite and 87% ferrite

13% ferrite and 87% cementite

6.67% carbon and 93.33% iron

Relieve the stresses set up in the material after hot or cold working.

Modify the structure of the material.

Change grain size.

Any one of these.