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. It shall be finished by such cold working and annealing or heat treatment as necessary to meet the properties specified. The following test methods shall be made to conform to the specified requirements: chemical analysis; tension test; Rockwell hardness; grain size; expansion test; mercurous nitrate test; and electrical resistivity.

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. Scope

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, B466/B466M, and B743.

Note 1—This specification B251 is the inch-pound companion to B251M; therefore, no SI equivalents are presented in the specification.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

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

B743 Specification for Seamless Copper Tube in Coils

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

Keywords

wrought; copper-alloy; tube;

ICS Code

ICS Number Code 77.150.30 (Copper products)

Citing ASTM Standards

[Back to Top]