Active Standard ASTM B251M | Developed by Subcommittee: B05.04
Book of Standards Volume: 02.01
Historical (view previous versions of standard)
This specification covers a group of general requirements for wrought seamless copper and copper alloy tube. The material shall be produced by either hot or cold working operations, or both, and shall be finished, unless otherwise specified, by such cold working and annealing or heat treatment as necessary to meet the properties specified. Dimensional requirements such as wall thickness are specified. The sampling requirements including lot size, portion size, and selection of sample pieces are given. Requirements for chemical analysis, and tension, microscopical examination, Rockwell hardness, grain size, expansion (pin), mercurous nitrate, and electrical resistivity tests are detailed. The material shall conform to the prescribed chemical composition, hardness, electrical resistivity, tensile strength, yield strength, elongation, and grain size.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers a group of general requirements common to several wrought product specifications. Unless otherwise specified in the purchase order, or in an individual specification, these general requirements shall apply to copper and copper-alloy tube supplied under Specifications B68, B75, B135, and B466/B466M.
Note 1—This specification is the SI companion to B251.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B68 Specification for Seamless Copper Tube, Bright Annealed
B75 Specification for Seamless Copper Tube
B135 Specification for Seamless Brass Tube
B153 Test Method for Expansion (Pin Test) of Copper and Copper-Alloy Pipe and Tubing
B154 Test Method for Mercurous Nitrate Test for Copper Alloys
B170 Specification for Oxygen-Free Electrolytic Copper--Refinery Shapes
B193 Test Method for Resistivity of Electrical Conductor Materials
B428 Test Method for Angle of Twist in Rectangular and Square Copper and Copper Alloy Tube
B466/B466M Specification for Seamless Copper-Nickel Pipe and Tube
B643 Specification for Copper-Beryllium Alloy Seamless Tube
E3 Guide for Preparation of Metallographic Specimens
E8 Test Methods for Tension Testing of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E53 Test Method for Determination of Copper in Unalloyed Copper by Gravimetry
E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods)
E112 Test Methods for Determining Average Grain Size
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E478 Test Methods for Chemical Analysis of Copper Alloys
ICS Number Code 77.150.30 (Copper products)
UNSPSC Code 40182000(Seamless copper tubes)