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ASTM B389-81(2004)

ASTM B389-81(2004)

Standard Test Method for Thermal Deflection Rate of Spiral and Helical Coils of Thermostat Metal

2010-12-31 /Historical
Superseeded by:
Significance and Use:

This test method simulates, to a practical degree, the operation of the thermostat metal coil.

The thermal deflection properties of a coil may vary from lot-to-lot of thermostat metal material. This method is useful for determining the optimum thickness and length of the material for a given deflection specification.

This method is useful as a quality test to determine acceptance or rejection of a lot of thermostat metal coils.


1.1 This test method covers the determination of the thermal deflection rate of spiral and helical coils of thermostat metal.

1.2 The values stated in inch-pound units are to be regarded as the standard. The metric equivalents of inch-pound units may be approximate.

1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Deflection; Thermal analysis; Thermal deflection rate; Thermostat metals; thermal deflection rate of spiral/helical coils of thermostat metals,; test
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