ASTM A409/A409M-2014
腐蚀场所或高温下使用的焊接大口径奥氏体钢管的标准规格

Standard Specification for Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service

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标准号

ASTM A409/A409M-2014

发布日期

2014年

实施日期

废止日期

无

中国标准分类号

H48

国际标准分类号

23.040.10

发布单位

US-ASTM

适用范围

1.1x00a0;This specification2 covers straight seam or spiral seam electric-fusion-welded, light-wall, austenitic chromium-nickel alloy steel pipe for corrosive or high-temperature service. The sizes covered are NPS 14 to 30 with extra light (Schedule 5S) and light (Schedule 10S) wall thicknesses. Table X1.1 shows the wall thickness of Schedule 5S and 10S pipe. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.

1.2x00a0;Several grades of alloy steel are covered as indicated in Table 1.

(A)x00a0;New designation established in accordance with ASTM E527 and SAE J1086.

(B)x00a0;The titanium content shall be not less than 5 times the carbon content and not more than 0.708201;%.

(C)x00a0;The columbium plus tantalum content shall be not less than 10 times the carbon content and not more than 1.108201;%.

(D)x00a0;The columbium plus tantalum content shall be not less than 10 times the carbon content and not more than 1.108201;%. The tantalum content shall be 0.108201;% maximum, CO 0.208201;% maximum.

1.3x00a0;Optional supplementary requirements are provided. These call for additional tests to be made, and when desired shall be stated in the order, together with the number of such tests required.

1.4x00a0;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 x201c;Mx201d; designation of this specification is specified in the order.

Note 1:x00a0;The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as nominal diameter, size, and nominal size.

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