|
Mechanical Properties |
Desirable |
Potentially Objectionable. |
|
Sound when hit with hammer |
Rings |
Dull sound |
|
Compactness |
Compact |
Loose |
|
Hardness, toughness |
Hard, tough |
Soft, weak |
|
Strength |
High strength |
Low strength |
|
Elasticity |
Elastic |
Nonelastic |
|
Abrasion |
High abrasion resistance strong intergranular bond |
Low abrasion resistance brittle, soft, weak, friable |
|
Internal Fracturing |
Free of micro- and macrocracks |
Easily broken, cracked due to cleavage; laminated; containing many micro- and macrocracks |
