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We offer products in a variety of Nitinol alloys
to tailor the thermo-mechanical performance to specific applications.
Alloys C and H are typically used for permanent fastening
in extreme temperature environments. Alloys D is used
for permanent and demateable fastening in more benign thermal
environments. Alloys N and G are used for actuators and
temporary clamping applications.
Alloy C components are shipped and stored in liquid nitrogen.
They recover to their memory shape on warming to room temperature.
This is a benefit when working with large assemblies or extremely
heat sensitive components. Alloy C applies clamping force
over an operating temperature range of -65°C to +300°C.
Alloy H is our most broadly used alloy for fastening and sealing
applications. The alloy begins to recover at about
50°C and reaches full clamping force at 165°C.
Once installed, Alloy H parts maintain clamping force over a
temperature range of -65°C to +300°C. Cooling
parts to below -120°C with liquid nitrogen will cause them
to loosen their grip for disassembly or adjustment.
Alloy D is used for fastening applications
with less demanding operating temperatures. This alloy
begins to recover at about 40°C, reaches full clamping force
at 100°C and offers an operating range of 0°C to 200°C.
The low recovery temperature necessitates extra care in shipping
and handling of Alloy D parts prior to installation. Since
Alloy D only requires heating to 100°C for installation,
it can be installed on some assemblies Alloy H cannot.
Another potential advantage of this alloy is that it loosens
at -50°C, allowing removal with HFC spray refrigerant or
dry ice.
Alloy G starts recovery at 105°C, reaching
full recovery stress at 160°C. The recovery stress
relaxes to zero when the part cools back down to 25°C.
The alloy has a sharp temperature response that makes it especially
well suited to use as an actuator to drive a mechanism in response
to elevated ambient temperature.
Alloy N starts recovery at 130°C, reaching
full recovery stress at 185°C. The recovery stress
relaxes to zero when the part cools back down below 45°C.
The alloy has a sharp temperature response that makes it especially
well suited to use as an actuator to drive a mechanism in response
to elevated ambient temperature.
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