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Full Description

1.1 This specification covers welded stainless steel tubing for mechanical applications where appearance, mechanical properties, or corrosion resistance is needed. The grades covered are listed in Table 1.

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.

TABLE 1 Chemical Requirements

Grade
Composition, %
Carbon,
max
Manga-
nese,
max
Phos-
phorus,
max
Sulfur,
max
Silicon,
max
Nickel
Chromium
Molybdenum
Titanium
Columbium + Tantalum
Austenitic
MT-3010.152.000.040 0.0301.00 6.0-8.0 16.0-18.0...... ...
MT-3020.152.000.040 0.0301.00 8.0-10.0 17.0-19.0...... ...
MT-3040.082.000.040 0.0301.00 8.0-11.0 18.0-20.0...... ...
MT-304L0.035A2.000.0400.030 1.00 8.0-13.018.0-20.0.........
MT-3050.122.000.040 0.0301.0010.0-13.0 17.0-19.0...... ...
MT-309S0.08 2.000.0400.0301.0012.0-15.022.0-24.0 ....... . .
MT-309S-Cb0.08 2.000.0400.0301.00 12.0-15.022.0-24.0 ... ...B
MT-310S0.08 2.000.0400.0301.0019.0-22.024.0-26.0 .........
MT-3160.082.000.040 0.0301.0010.0-14.0 16.0-18.02.0-3.0 ... ...
MT-316L0.035A2.000.0400.030 1.0010.0-15.016.0-18.0 2.0-3.0......
MT-3170.082.000.040 0.0301.0011.0-14.0 18.0-20.03.0-4.0 ... ...
MT-3210.082.000.040 0.0301.00 9.0-13.0 17.0-20.0...C...
MT-3300.152.000.040 0.0301.0033.0-36.0 14.0-16.0...... ...
MT-3470.08 2.000.0400.0301.00 9.0-13.017.0-20.0 ......B
Ferritic
MT-4290.12 1.000.040 0.0301.00 0.50 max14.0-16.0.........
MT-4300.12 1.000.040 0.0301.00 0.50 max16.0-18.0.........
MT-430-Ti0.10 1.000.0400.0301.000.075 max 16.0-19.5... 5 × C min, ...
0.75 max

A 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.

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

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

 

Document History

  1. ASTM A554-21


    Standard Specification for Welded Stainless Steel Mechanical Tubing

    • Most Recent
  2. ASTM A554-16


    Standard Specification for Welded Stainless Steel Mechanical Tubing

    • Historical Version
  3. ASTM A554-15a


    Standard Specification for Welded Stainless Steel Mechanical Tubing

    • Historical Version
  4. ASTM A554-15


    Standard Specification for Welded Stainless Steel Mechanical Tubing

    • Historical Version
  5. ASTM A554-14


    Standard Specification for Welded Stainless Steel Mechanical Tubing

    • Historical Version
  6. ASTM A554-13


    Standard Specification for Welded Stainless Steel Mechanical Tubing

    • Historical Version
  7. ASTM A554-11


    Standard Specification for Welded Stainless Steel Mechanical Tubing

    • Historical Version
  8. ASTM A554-10


    Standard Specification for Welded Stainless Steel Mechanical Tubing

    • Historical Version
  9. ASTM A554-08a

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    viewing


    Standard Specification for Welded Stainless Steel Mechanical Tubing

    • Historical Version
  10. ASTM A554-08


    Standard Specification for Welded Stainless Steel Mechanical Tubing

    • Historical Version
  11. ASTM A554-03


    Standard Specification for Welded Stainless Steel Mechanical Tubing

    • Historical Version
  12. ASTM A554-98e1


    Standard Specification for Welded Stainless Steel Mechanical Tubing

    • Historical Version