查看标准

适用范围：<p>For purposes of determining compliance with the specified limits for requirements of the properties listed in the following table and for dimensional tolerances, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice <a href="http://myastm.astm.org/SUBSCRIPTION/NewValidateSubscription.cgi?E29-HTML">E29</a>:<p id="n00012"><table summary="TABLE 8" frame="void" id="n00012" class="rules"> <tr><td align="center" valign="middle">Property</td><td align="center" valign="middle">Rounded Unit for Observed or<br> Calculated Value</td></tr> <tr><td align="center" valign="middle"></td><td align="center" valign="middle"> </td></tr> <tr><td align="left" valign="top"> Chemical composition</td><td align="left" valign="top">Nearest unit in the last right-hand </td></tr> <tr><td align="center" valign="top">Hardness</td><td align="left" valign="top">Significant</td></tr> <tr><td align="center" valign="top">Electrical Resistivity</td><td align="left" valign="top">Digit used in expression the limiting value</td></tr> <tr><td align="left" valign="top"> Grain size up to 0.055 mm, incl</td><td align="left" valign="top">nearest multiple of 0.005 mm</td></tr> <tr><td align="left" valign="top"> Tensile strength</td><td align="left" valign="top">nearest ksi (5 MPa)</td></tr> <tr><td align="center" valign="top">Expansion</td><td align="left" valign="top">Nearest 1%</td></tr></table></p></p><p id="s00002">1.1 This specification establishes the requirements for welded copper tube with a longitudinal seam free of filler metal produced from sheet or strip of the following coppers:<p id="n00001"><table summary="TABLE 1" frame="void" id="n00001" class="rules"> <tr><td align="center" valign="top">Copper UNS Nos.</td><td align="center" valign="top">Type of Copper</td></tr> <tr><td align="center" valign="top"></td><TD> </TD></tr> <tr><td align="center" valign="top">C10100</td><td align="left" valign="top">Oxygen-free electronic</td></tr> <tr><td align="center" valign="top">C10200</td><td align="left" valign="top">Oxygen-free</td></tr> <tr><td align="center" valign="top">C10300</td><td align="left" valign="top">Oxygen-free, extra low phosphorus</td></tr> <tr><td align="center" valign="top">C10800</td><td align="left" valign="top">Oxygen-free, low phosphorus</td></tr> <tr><td align="center" valign="top">C11000</td><td align="left" valign="top">Electrolytic tough pitch</td></tr> <tr><td align="center" valign="top">C12000</td><td align="left" valign="top">Phosphorus deoxidized, low residual phosphorus</td></tr> <tr><td align="center" valign="top">C12200</td><td align="left" valign="top">Phosphorus deoxidized, high residual phosphorus</td></tr> <tr><td align="center" valign="top">C14200</td><td align="left" valign="top">Phosphorus deoxidized, arsenical</td></tr></table></p></p> <p id="s00003">1.2 Unless otherwise specified in the contract or purchase order, product furnished of any listed copper, with the exception of copper C11000, shall be considered acceptable.</p> <p id="s00004">1.2.1 Copper C11000 welded tube shall not be used in applications where hydrogen embrittlement during heating is a concern.</p> <p id="s00005">1.3 <span class="italic"><span class="italic">Units</span>8212;</span>Values stated in inch-pound units are to be regarded as standard except for grain size, which is given in SI units. The values given in parentheses are mathematical conversions to SI units, which are provided for information only and are not considered standard.</p> <p id="s00006">1.4 <span class="italic"><span class="med">The following hazard caveat pertains only to Section 13 of this specification: </span>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 and health practices and determine the applicability of regulatory limitations prior to use. </span>