Standard Active Last Updated: Jan 29, 2020 Track Document
ASTM A254/A254M-12(2019)

Standard Specification for Copper-Brazed Steel Tubing

Standard Specification for Copper-Brazed Steel Tubing A0254_A0254M-12R19 ASTM|A0254_A0254M-12R19|en-US Standard Specification for Copper-Brazed Steel Tubing Standard new BOS Vol. 01.01 Committee A01
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Abstract

This specification covers double-wall, copper brazed steel tubing suitable for general engineering uses, particularly in the automotive, refrigeration, and stove industries for fuel lines, brake lines, oil lines, heating and cooling units, and the like. The tubing shall be made by rolling steel strip into the form of tubing and subsequently copper brazing in a reducing atmosphere. The steel shall conform to the prescribed chemical composition and shall be subjected to heat analysis and product analysis. Tension, flattening, expansion, bending, and pressure proof tests shall be made in accordance with the specification.

Scope

1.1 This specification covers double-wall, copper-brazed steel tubing suitable for general engineering uses, particularly in the automotive, refrigeration, and stove industries for fuel lines, brake lines, oil lines, heating and cooling units, and the like. The tubing is available in either of two types, single strip or double strip as shown in Fig. 1.

FIG. 1 Brazed Tubing, Double-Wall, 360-deg Brazed Construction

 Brazed Tubing, Double-Wall, 360-deg Brazed Construction Brazed Tubing, Double-Wall, 360-deg Brazed Construction

1.2 Units—This specification is expressed in both inch-pounds units and in SI units; however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply. The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. In this specification hard or rationalized conversions apply to diameters, lengths, and tensile properties. Soft conversion applies to other SI measurements.

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.

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Details
Book of Standards Volume: 01.01
Developed by Subcommittee: A01.09
Pages: 4
DOI: 10.1520/A0254_A0254M-12R19
ICS Code: 23.040.15