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适用范围：<p>These test methods for the chemical analysis of metals and alloys are primarily intended to test such materials for compliance with compositional specifications such as Specification <a href="http://myastm.astm.org/SUBSCRIPTION/NewValidateSubscription.cgi?A101-HTML">A101</a> and <a href="http://myastm.astm.org/SUBSCRIPTION/NewValidateSubscription.cgi?A481-HTML">A481</a>. It is assumed that all who use these test methods will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory.</p><p id="s00002">1.1 These test methods cover the chemical analysis of chromium and ferrochromium having chemical compositions within the following limits:<p id="n00001"><table summary="TABLE 1" frame="void" id="n00001" class="rules"> <tr><td align="center" valign="top"></td><td align="center" valign="middle"> Element</td><td align="center" valign="middle">Concentration, %</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Aluminum</td><td align="center" valign="top">0.25 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Antimony</td><td align="center" valign="top">0.005 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Arsenic</td><td align="center" valign="top">0.005 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Bismuth</td><td align="center" valign="top">0.005 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Boron</td><td align="center" valign="top">0.005 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Carbon</td><td align="center" valign="top">9.00 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Chromium</td><td align="center" valign="top"> 51.0 to 99.5</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Cobalt</td><td align="center" valign="top">0.10 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Columbium</td><td align="center" valign="top">0.05 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Copper</td><td align="center" valign="top">0.05 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Lead</td><td align="center" valign="top">0.005 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Manganese</td><td align="center" valign="top">0.75 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Molybdenum</td><td align="center" valign="top">0.05 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Nickel</td><td align="center" valign="top">0.50 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Nitrogen</td><td align="center" valign="top">6.00 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Phosphorus</td><td align="center" valign="top">0.03 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Silicon</td><td align="center" valign="top">12.00 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Silver</td><td align="center" valign="top">0.005 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Sulfur</td><td align="center" valign="top">0.07 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Tantalum</td><td align="center" valign="top">0.05 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Tin</td><td align="center" valign="top">0.005 max</td></tr> <tr><td align="center" valign="top"></td><td align="left" valign="top">Titanium</td><td align="center" valign="top">0.50 max</td></tr> <tr><td align="center" va......