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ASTM A554-16
Standard Specification for Welded Stainless Steel Mechanical Tubing
Standard Specification for Welded Stainless Steel Mechanical Tubing
A0554-16
ASTM|A0554-16|en-US
Standard Specification for Welded Stainless Steel Mechanical Tubing
Standard
A554 Standard Specification for Welded Stainless Steel Mechanical Tubing>
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BOS Vol. 01.01 Committee A01
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Abstract
This guide covers standard specification for welded stainless steel tubing for mechanical applications where appearance, mechanical properties, or corrosion resistance is needed. The tubes shall be made from flat-rolled steel by an automatic welding process without the addition of filler metal. Tubes shall be furnished in one of the following shapes - round, square, rectangular, or special. Heat analysis shall be performed wherein several grades of steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, titanium, columbium, and tantalum.
Scope
1.1 This specification covers welded austenitic, ferritic, and austenitic-ferritic duplex stainless steel mechanical tubing intended for use in ornamental, structural, exhaust, and other applications where appearance, mechanical properties, or corrosion resistance is needed. The grades covered are listed in Table 1.
(A) Maximum, unless a range or minimum is indicated. Where ellipses (...) appear in this table, there is no minimum and analysis for the element need not be determined or reported.
(B) For small diameter or thin walls, or both, where many drawing passes are required, a carbon content of 0.040 % max is necessary in grades MT-304L and MT-316L. Small outside diameter tubes are defined as those less than 0.500 in. (12.7 mm) in outside diameter and light wall tubes as those less than 0.049 in. (1.24 mm) in average wall thickness.
(C) The columbium content shall be not less than ten times the carbon content and not more than 1.00 %.
(D) The titanium content shall be not less than five times the carbon content and not more than 0.60 %.
(E) S40900 (Type 409) has been replaced by S40910, S40920, and S40930. Unless otherwise specified in the ordering information, an order specifying S40900 or Type 409, shall be satisfied by any one of S40910, S40920, or S40930 at the option of the seller. Material meeting the requirements of S40910, S40920, or S40930 may, by agreement between purchaser and manufacturer, be certified as S40900.
(F) S41003 chemical composition relates to Type 412, which is not currently an AISI or SAE number.
(G) S44100 chemical composition relates to Type 441, which is not currently an AISI or SAE number.
(H) % Cr + 3.3 × %Mo + 16 × %N = 41 min.
(I) % Cr + 3.3 × %Mo + 16 × %N = 40 min.
(J) Designation established in accordance with Practice E527 and SAE J 1086.
(K) Common name, not a trademark, widely used, not associated with any one producer.
1.2 This specification covers as-welded or cold-reduced mechanical tubing in sizes to 16 in. (406.4 mm) outside dimension, and in wall thicknesses 0.020 in. (0.51 mm) and over.
1.3 Tubes shall be furnished in one of the following shapes as specified by the purchaser: round, square, rectangular, or special.
1.4 Supplementary requirements of an optional nature are provided and when desired shall be so stated in the order.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.