Type W (ALMANITE®) are a series of austenitic-martensitic white irons characterized by high hardness and relatively good impact strength.
Type W1 has a pearlitic matrix.
Type W2 has a martensitic matrix.
Type W4 is highly alloyed to provide an austenitic matrix in the as-cast condition which may be further modified to give a martensitic matrix
by heat treatment or by freezing.
Type WS is a hard wearing martensitic iron with exceptional impact strength…not readily machinable… work hardens in service to high hardness values.
Type WSH is an austenitic nodular iron possessing superior tensile strength; toughness and ability to work harden under conditions of severe pounding impact. It is extremely difficult to machine.
|PROPERTY||TYPE W1 |
|TYPE W2 |
|TYPE W4 |
|Tensile Strength-psi||50/60,000||50/60,000||60/80,000||60/80,000||> 100,000|
|Modulus of Elasticity-psi||26,000,000||26,000,000||24,000,000||24,000,000|
|Brinell Hardness (Nominal)||500/600||500-600||400/700||400/525||350/500|
|Izod Impact 1.2" bar|
unnotched ft. lb.
|30-50||40-60||40-70||up to 180||up to 120|