ASTM-A511:2012 Edition

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A511/A511M-12 Standard Specification for Seamless Stainless Steel Mechanical Tubing

Published By	Publication Date	Number of Pages
ASTM	2012	11

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Categories: 23.040.10 - Iron and steel pipes, ASTM

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Description

ASTM A511/A511M-12

Historical Standard: Standard Specification for Seamless Stainless Steel Mechanical Tubing

ASTM A511/A511M

Scope

1.1 This specification covers seamless stainless tubing for use in mechanical applications where corrosion-resistant or high-temperature strength is needed. The grades covered are listed in Table 1, Table 2, and Table 3.

1.2 This specification covers seamless cold-finished mechanical tubing and seamless hot-finished mechanical tubing in sizes up to 12¾ in. [325 mm] in outside nominal diameter (for round tubing) with wall thicknesses as required.

1.3 Tubes shall be furnished in one of the following shapes, as specified by the purchaser: round, square, rectangular, or special.

1.4 Optional supplementary requirements are provided and when desired, shall be stated in the order.

1.5 The values stated in inch-pound units are to be regarded as the standard. Within the text, the SI units are shown in square brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.

TABLE 1 Chemical Requirements of Austenitic Stainless Steels

^A For small diameter or thin wall tubing or both, where many drawing passes are required, a maximum of 0.040 % carbon is necessary in grades MT-304L and MT-316L. Small outside diameter tubes are defined as those under a 0.500 in. [12.7 mm] outside diameter and light-wall tubes as those under a 0.049 in. [1.2 mm] average wall thickness (0.044 in. [1.1 mm] min wall thickness).

^B The titanium content shall be not less than five times the carbon content and not more than 0.60 %.

^C The columbium plus tantalum content shall be not less than ten times the carbon content and not more than 1.00 %.

TABLE 2 Chemical Requirements of Ferritic and Martensitic Stainless Steels

^A MT446-2 is a lower carbon version of MT446-1, that has a lower tensile strength but improved ductility and toughness.

^B Carbon plus nitrogen = 0.025 max %.

TABLE 3 Chemical Requirements of Austenitic-Ferritic Stainless Steels^A

^A Maximum, unless a 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 % Cr + 3.3 X % Mo + 16X % N ≥ 40.

Keywords

austenitic stainless steel; duplex stainless steel; ferritic/austenitic stainless steel; mechanical tubing; seamless steel tube; stainless steel tube; steel tube ; Corrosive service applications–tube (steel); High-temperature service applications–steel tube; Mechanical tubing–specifications; Seamless steel tube–specifications; Stainless steel tube–specifications

ICS Code

ICS Number Code 23.040.10 (Iron and steel pipes)

DOI: 10.1520/A0511_A0511M-12

Additional information

MT 310S	0.08 max
MT 302	0.08 to 0.20
S32750	0.030
MT 303	0.15 max
MT 303Se	0.15 max
MT 347	0.08 max
MT 304	0.08 max
MT 403	0.15
Grade	Composition, %
MT 305	0.12
MT 446–1	0.20
S32950	0.030
MT 446–2A	0.12
MT 321	0.08 max
MT 443	0.20
MT 317	0.08 max
29-4	0.010
MT 316L	0.035 maxA
S39274	0.030
MT 304L	0.035 maxA
S32760B	0.05
S31803	0.030
S31260	0.030
MT 431	0.20
MT 309S	0.08 max
S32506	0.030
S32707	0.030
S32906	0.030
MT 416Se	0.15
S32808	0.030
S32101	0.040
MT 414	0.15
MT 430	0.12
MT 316	0.08 max
	Carbon
S32205	0.030
S32304	0.030
MT 410	0.15
MT 405	0.08
MT 429	0.12
S32550	0.040
MT 440A	0.60 to 0.75
29-4-2	0.010
ICS Codes	23.040.10 - Iron and steel pipes