PDF《ASTM A213 T12》

1 and 2. 1.2 Grades containing the letter, H, in their designation, have requirements different from those of similar grades not containing the letter, H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements. 1.3 The tubing sizes and thicknesses usually furnished to this specification are 1/8 in. [3.2 mm] in inside diameter to

5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specification. 1.4 The values stated in either SI units or inch-pound 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. The inch-pound units shall apply unless the M designation of this specification is specified in the order. TABLE

1 Chemical Composition Limits, %A , for Low Alloy SteelA Maximum, unless range or minimum is indicated. Where ellipses (…) appear in this table, there is no requirement, and analysis for the element need not be determined or reported. B It is permissible to order T2 and T12 with a sulfur content of 0.045 max. See 16.3. C Alternatively, in lieu of this ratio minimum, the material shall have a minimum hardness of

275 HV in the hardened condition, defined as after austenitizing and cooling to room temperature but prior to tempering. Hardness testing shall be performed at mid-thickness of the product. Hardness test frequency shall be two samples of product per heat treatment lot and the hardness testing results shall be reported on the material test report. After testing, the test piece shall be free from cracks or breaks. However, slight incipient cracks at its edges shall not be regarded as justification for rejection. Online: http://www.sunnysteel.com/blog/index.php/astm-a213-T12/ Sunny Steel Enterprise Ltd. Collect Steel pipe and fitting Resources Http://www.sunnysteel.com E-mail: [email protected] Page:5 of ASTM A213 T12, ASME SA213 T12 specification.docx Read more information of seamless steel pipes ? Why seamless steel pipe? Some benefits of Seamless Steel Pipe ? Seamless steel pipes for high temperature and pressure sevice ? ASTM A213/ ASME SA213 Standard specification ? ASTM A213 T2/ ASME SA213 T2 specification ? ASTM A213 T2/ ASME SA213 T5 specification ? ASTM A213 T5b/ ASME SA213 T5b specification ? ASTM A213 T9/ ASME SA213 T9 specification ? ASTM A213 T12/ ASME SA213 T11 specification ? ASTM A213 T12/ ASME SA213 T12 specification ? ASTM A213 T17/ ASME SA213 T17 specification ? ASTM A213 T21/ ASME SA213 T21 specification ? ASTM A213 T22/ ASME SA213 T22 specification ? ASTM A213 T91/ ASME SA213 T91 specification ? ASTM Standard for Boilers tube, Super heater tubes ? Seamless steel pipes for high temperature and pressure sevice ? Standards commonly used stainless steel tube ? Seamless tube, Seamless tubing ? What is boiler tube ? Heat exchanger tube Sunny Steel Enterprise Ltd. Collect Steel pipe and fitting Resources Http://www.sunnysteel.com E-mail: [email protected] Page:6 of ASTM A213 T12, ASME SA213 T12 specification.docx Boiler Tube in the following Spec/Grades: ? ASTM A178 Grade A, C, D........