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ASTM B388-06(2018)

(Specification)

Standard Specification for Thermostat Metal Sheet and Strip

Standard Specification for Thermostat Metal Sheet and Strip

ABSTRACT
This specification covers the standard for thermostat metals in the form of sheet or strip proposed for use as temperature-sensitive elements of devices for controlling, compensating, or indicating temperature. Metals shall adhere to physical requirements such as maximum sensitivity range, maximum recommended temperature, flexibility, electrical resistivity, modulus of elasticity, specific heat, density, and hardness.
SCOPE
1.1 This specification covers thermostat metals in the form of sheet or strip that are used for the temperature-sensitive elements of devices for controlling, compensating, or indicating temperature and is intended to supply acceptance requirements to purchasers ordering this material by type designation.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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.

General Information

Status
Published
Publication Date
31-Mar-2018
ICS
77.150.99 - Other products of non-ferrous metals
Technical Committee
B02 - Nonferrous Metals and Alloys
Drafting Committee
B02.10 - Thermostat Metals and Electrical Resistance Heating Materials
Current Stage
Ref Project

Relations

Refers
ASTM B478-85(2016) - Standard Test Method for Cross Curvature of Thermostat Metals
Effective Date
01-May-2016
Refers
ASTM B106-08(2019) - Standard Test Methods for Flexivity of Thermostat Metals
Effective Date
01-Nov-2019
Referred By
ASTM B753-07(2018) - Standard Specification for Thermostat Component Alloys
Effective Date
01-Apr-2018
Referred By
ASTM B223-08(2018) - Standard Test Method for Modulus of Elasticity of Thermostat Metals (Cantilever Beam Method)
Effective Date
01-Apr-2018

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ASTM B388-06(2018) - Standard Specification for Thermostat Metal Sheet and StripASTM B388-06(2018) - Standard Specification for Thermostat Metal Sheet and Strip
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ASTM B388-06(2018) - Standard Specification for Thermostat Metal Sheet and Strip
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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.
Designation:B388 −06(Reapproved 2018)
Standard Specification for
1
Thermostat Metal Sheet and Strip
This standard is issued under the fixed designation B388; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Coils of Thermostat Metal
B389 TestMethodforThermalDeflectionRateofSpiraland
1.1 This specification covers thermostat metals in the form
Helical Coils of Thermostat Metal
of sheet or strip that are used for the temperature-sensitive
B478 TestMethodforCrossCurvatureofThermostatMetals
elements of devices for controlling, compensating, or indicat-
B753 Specification for Thermostat Component Alloys
ing temperature and is intended to supply acceptance require-
C351 Test Method for Mean Specific Heat of Thermal
ments to purchasers ordering this material by type designation.
3
Insulation (Withdrawn 2008)
1.2 The values stated in inch-pound units are to be regarded
E92 Test Methods for Vickers Hardness and Knoop Hard-
as standard. The values given in parentheses are mathematical
ness of Metallic Materials
conversions to SI units that are provided for information only
E384 Test Method for Microindentation Hardness of Mate-
and are not considered standard.
rials
1.3 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Definitions:
responsibility of the user of this standard to become familiar
3.1.1 thermostat metal, n—a composite material comprising
with all hazards including those identified in the appropriate
two or more metallic layers of differing coefficients of thermal
Safety Data Sheet (SDS) for this product/material as provided
expansion such that the radius of curvature of the composite
by the manufacturer, to establish appropriate safety, health,
changes with temperature change.
and environmental practices, and determine the applicability
of regulatory limitations prior to use.
4. Ordering Information
1.4 This international standard was developed in accor-
4.1 Orders for material under this specification shall include
dance with internationally recognized principles on standard-
the following information:
ization established in the Decision on Principles for the
4.1.1 Type designation (Table 1 and Table 2),
Development of International Standards, Guides and Recom-
4.1.2 Thickness (see 9.1),
mendations issued by the World Trade Organization Technical
4.1.3 Width (see 9.2),
Barriers to Trade (TBT) Committee.
4.1.4 Temper (designated as percent cold reduction as
needed),
2. Referenced Documents
4.1.5 Marking to identify vendor, type, high-expansion side
2
2.1 ASTM Standards:
or low-expansion side,
B63 Test Method for Resistivity of Metallically Conducting
4.1.6 Weight.
Resistance and Contact Materials
B106 Test Methods for Flexivity of Thermostat Metals
5. Material Segregation
B223 Test Method for Modulus of Elasticity of Thermostat
5.1 The thermostat metal shall be supplied segregated into
Metals (Cantilever Beam Method)
two groups after slitting: (1) the burr on the low-expansive
B362 Test Method for Mechanical Torque Rate of Spiral
component, and (2) the burr on the high-expansive component.
These two groups shall be identified and packaged separately
or together as mutually agreed upon between the producer and
1
This specification is under the jurisdiction of ASTM Committee B02 on
the user.
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
B02.10 on Thermostat Metals and Electrical Resistance Heating Materials.
6. Chemical Composition
Current edition approved April 1, 2018. Published April 2018. Originally
approved in 1962. Last previous edition approved in 2012 as B388 – 06 (2012).
6.1 The nominal composition of component materials is
DOI: 10.1520/B0388-06R18.
given in Table 1.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B388−06(2018)
TABLE 1 Composition
NOTE 1—TM6 and TM7 are no longer manufactured due to availability, difficulty to produce, commercial interest, or combinations t
...

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SCOPE
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SCOPE
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ABSTRACT
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SCOPE
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16.1 For the purpose of determining compliance with the specified limits of property requirements, an observed value or a calculated value shall be rounded in accordance with the rounding method of Practice E29.    
Test  
Rounded Units for Observed
or Calculated Value  
Chemical composition, tolerance
(when expressed in decimals)  
nearest unit in the last right hand place of figures of the specified limit  
Tensile strength and yield strength  
nearest 1000 psi (10 MPa)  
Elongation  
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SCOPE
1.1 This specification covers six grades of zirconium ingots.  
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Standard Practice for the Use of Color Codes for Zinc Casting Alloy Ingot

SIGNIFICANCE AND USE
4.1 The purpose of these color codes is to allow for quick identification of ingot bundles or jumbo ingots of zinc casting alloys. Other than jumbo ingots, this standard is not intended to imply that each ingot will be color coded but only that each ingot bundle be color coded.  
4.2 Each ingot bundle or jumbo ingot shall be identified with the appropriate color code listed in Table 1. (A) UNS assignations were established in accordance with Practice E527. The last digit of a UNS number differentiates between alloys of similar composition.(B) The North American system is design to be a simplified version of the International system by eliminating the leading white stripe and in the case of Alloy 3 eliminating all stripes.(C) ASTM alloy designations established in accordance with Practice B275.(D) The color codes for these alloys are adapted from European standard (CEN) specification EN 1774. No color coding currently exists in International standard ISO 301.(E) These alloys are not currently included in European standard EN 1774 nor International standard ISO 301 and no color codes have previously been assigned.(F) ACuZinc and ACuZinc5 are registered names of the General Motors Corporation.(G) ZA-73 is also often used as a hot-chamber die casting alloy and foundry casting alloy.  
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SCOPE
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ABSTRACT
This specification covers tantalum and tantalum alloy seamless and welded tubes of the following grades: UNS Grade R05400 which is unalloyed tantalum, powder-metallurgy consolidation, UNS Grade R05200 which is unalloyed tantalum, vacuum melted, UNS Grade R05252 which is tantalum with 2.5% tungsten alloy, vacuum melted, UNS Grade R05255 which is tantalum with 10% tungsten alloy, vacuum melted, and UNS Grade R05240 which is tantalum alloy with 60% tantalum, 40% columbium, electron-beam furnace or vacuum arc melted, or both. Seamless tube shall be made by any seamless method and the welded tube shall be made from flat-rolled product by an automatic or semiautomatic fusion welding process with no addition of filler metal. Mechanical properties such as ultimate tensile strength, yield strength, and elongation shall be determined by tensile, flare, and reverse flattening tests. Nondestructive tests such as hydrostatic test, pneumatic test, helium leak test, and ultrasonic test shall be done as well.
SIGNIFICANCE AND USE
12.1 For the purpose of determining compliance with the specified limits of property requirements, an observed value or a calculated value shall be rounded in accordance with the rounding method of Practice E29.
SCOPE
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ASTM
ASTM B909-21a(Guide)
Standard Guide for Plane Strain Fracture Toughness Testing of Non-Stress Relieved Aluminum Products

SIGNIFICANCE AND USE
4.1 The property KIc, determined by Test Method E399 or ISO 12135, characterizes a material's resistance to fracture in a neutral environment and in the presence of a sharp crack subjected to an applied opening force or moment within a field of high constraint to lateral plastic flow (plane strain condition). A KIc value is considered to be a lower limiting value of fracture toughness associated with the plane strain state.  
4.1.1 Thermal quenching processes used with precipitation hardened aluminum alloy products can introduce significant residual stresses.5 Mechanical stress relief procedures (stretching, compression) are commonly used to relieve these residual stresses in products with simple shapes. However, in the case of mill products with thick cross-sections (for example, heavy gauge plate or large hand forgings) or complex shapes (for example, closed die forgings, complex open die forgings, stepped extrusions, castings), complete mechanical stress relief is not always possible. In other instances residual stresses may be introduced into a product during fabrication operations such as straightening, forming, or welding operations.
Note 1: For the purposes of this guide, only bulk residual stress is considered (that is, of the type typically created during a quench process for thermal heat treatment) and not engineered residual stress, such as from shot peening or cold hole expansion.  
4.1.2 Specimens taken from such products that contain residual stress will likewise themselves contain residual stress. While the act of specimen extraction in itself partially relieves and redistributes the pattern of original stress, the remaining magnitude can still be appreciable enough to cause significant error in the test result.  
4.1.3 Residual stress is a non-proportional internal stress that is superimposed on the applied stress and results in an actual crack-tip stress-intensity factor that is different from one based solely on externally applied forces or di...
SCOPE
1.1 This guide covers supplementary guidelines for plane-strain fracture toughness testing of aluminum products for which complete stress relief is not practicable. Guidelines for recognizing when residual stresses may be significantly biasing test results are presented, as well as methods for minimizing the effects of residual stress during testing. This guide also provides guidelines for an empirical correction as well as interpretation of data produced during the testing of these products. Test Method E399 is the standard test method to be used for plane-strain fracture toughness testing of aluminum alloys.  
1.2 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 establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.3 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.

  • Guide
    4 pages
    English language
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  • Guide
    4 pages
    English language
    sale 15% off