49 C.F.R. § 179.300-7 Materials.
Title 49 - Transportation
(a) Steel plate material used to fabricate tanks must conform with the following specifications with the indicated minimum tensile strength and elongation in the welded condition. However, the maximum allowable carbon content for carbon steel must not exceed 0.31 percent, although the individual ASTM specification may allow for a greater amount of carbon. The plates may be clad with other approved materials: (b) [Reserved] (c) All plates must have their heat number and the name or brand of the manufacturer legibly stamped on them at the rolling mill. [Amdt. 179–10, 36 FR 21355, Nov. 6, 1971, as amended by Amdt. 179–42, 54 FR 38798, Sept. 20, 1989; Amdt. 179–43, 55 FR 27642, July 5, 1990; Amdt. 179–52, 61 FR 28682, June 5, 1996; Amdt. 179–52, 61 FR 50255, Sept. 25, 1996; Amdt. 179–53, 61 FR 51342, Oct. 1, 1996; 68 FR 75763, Dec. 31, 2003]
Title 49: Transportation
PART 179—SPECIFICATIONS FOR TANK CARS
Subpart E—Specifications for Multi-Unit Tank Car Tanks (Classes DOT-106A and 110AW)
§ 179.300-7 Materials.
------------------------------------------------------------------------ Tensile Elongation in strength 2 inches (psi) (percent) Specifications \2\ welded welded condition condition \1\ \1\ (longitudinal) (minimum) (minimum)------------------------------------------------------------------------ASTM A 240/A 240M type 304................. 75,000 25ASTM A 240/A 240M type 304L................ 70,000 25ASTM A 240/A 240M type 316................. 75,000 25ASTM A 240/A 240M type 316L................ 70,000 25ASTM A 240/A 240M type 321................. 75,000 25ASTM A 285 Gr. A........................... 45,000 29ASTM A 285 Gr. B........................... 50,000 20ASTM A 285 Gr. C........................... 55,000 20ASTM A 515/A 515M Gr. 65................... 65,000 20ASTM A 515/A 515M Gr. 70................... 70,000 20ASTM A 516/A 516M Gr. 70................... 70,000 20------------------------------------------------------------------------\1\ Maximum stresses to be used in calculations.\2\ These specifications are incorporated by reference (IBR, see § 171.7 of this subchapter.)
