Alloys & Properties

NiTiNOL is a family of Ni - Ti Alloys in which transformation temperatures are changed by changing the Ni:Ti ratio. [reference] We designate alloys by the As (austenite start) determined by thermal analysis after a full anneal.

• See ASTM Standard F2004 for a description of the thermal analysis test.
• See ASTM Standard F2005 for definitions of As and other terms for shape memory alloys.
• See ASTM Standard F2063 for a specification of Ni - Ti alloy mill products.

Shape Memory Ni - Ti Alloys: Alloys having lower Ni:Ti ratio so that they are martensitic at room temperature after cold drawing and heat treating for shape setting. After deformation, will recover shape upon heating through transformation temperature.

Body Temperature NI - Ti Alloy: Alloys formulated to be fully transformed and superelastic at 37oC.

Superelastic Ni - Ti Alloys: Alloys having a Ni:Ti ratio so that they are superelastic at room temperature when they are cold drawn and tempered.

High Strength Superelastic Ni - Ti: Alloys having higher Ni:Ti ratio so that they are superelastic at room temperature with higher superelastic plateau stresses.

For Ni - Ti Alloy Temperature Guides please click here.

To view a Standard Inventory form click here.

To view Physical and Mechanical Properties click here.