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Significance and Use
4.1 This test method is useful to determine the mechanical force of spiral coils of thermostat metal.
4.2 The mechanical 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 mechanical torque specification.
4.3 This test is useful as a quality test to determine acceptance or rejection of a lot of thermostat metal coils.
1.1 The test method covers the principles of determining the mechanical torque rate of spiral coils of thermostat metal.
Note 1: This test method has been developed particularly to cover the determination of the mechanical torque rate of spiral coils made of thermostat metal for carburetors and manifold heat controls. The method is not limited to thermostat metals and can be used for spiral coils of other materials for which the torque rate must be measured accurately.
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 concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ICS Number Code 29.120.20 (Connecting devices)
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ASTM B362-91(2020), Standard Test Method for Mechanical Torque Rate of Spiral Coils of Thermostat Metal, ASTM International, West Conshohocken, PA, 2020, www.astm.orgBack to Top