ASTM A-48 to A-312 ASTM A-500 Tubing ASTM B-75 to B-626 ASTM Reference Chart Metallurgy Pipe Specifications Glossary of Terms

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Only general information is presented here. Please contact ASTM for greater detail. ASTM Number Explanation A-333 Covers nominal wall seamless and welded carbon and alloy steel pipe intended for low temperature service. (-50 to -320F). Several grades are covered including Grades 1, 3, 4, 6, 7, 8, and 9. A-334 Covers six grades of seamless or welded carbon and alloy steel tubes intended for use at low temperatures (-50 to -320F). A-335 Covers nominal wall seamless alloy steel pipe intended for high temperature service. Pipe ordered to this specification shall be suitable for bending, flanging, and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, mechanical properties, and high temperature characteristics. This specification covers twelve grades, most common of which are Grades 1,5 7, 9, 11 and 22. A-338 This specification covers malleable iron flanges, pipe fittings and valve parts, including parts to be assembled for use in railroad, marine and other heavy duty service applications where fittings furnished in accordance American National Standard for Malleable Iron Threaded Fittings, Class 150 and 300 (ANSI B16.3) are not considered adequate. A-350 This specification covers several grades of carbon and low-alloy steel forged or ring-rolled flanges, forged fittings and valve intended primarily for low-temperature service and requiring notch toughness testing. They are made to specified dimensions, or to dimensional standards, such as the ANSI and API specifications referenced in the full ASTM Specification. Although this specification covers come piping components machined from rolled bar and seamless tubular materials. It does not cover raw material produced in these product forms. A-351 This specification covers austenitic and austenitic-ferritic (duplex) steel castings for valves, fittings and other pressure-containing parts. Grades included in this specification are CF3, CF8, CF3M, CF8M, CF3MN and so on. A-352 This specification covers steel castings for valves, flanges, fittings and other pressure-containing parts intended primarily for low-temperature service. This specification contains the following grades LCA, LCB, LCC, LC1, LC2, LC2-1, LC3, LC4, LC9 and CA6NM. A-358 This specification covers electric-fusion-welded austenitic chromium-nickel alloy steel pipe suitable for corrosive or high-temperature service, or both. (Although no restrictions are placed on the sizes of pipe which may be furnished under this specification, commercial practice is commonly limited to sizes not less than NPS 8). A-387 This specification covers chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service. It covers the following grades, 2, 5, 9, 11, 12, 21, 21L, 22, 22L and 91. A-403 This specification covers two general classes, WP and CR, of wrought austeitic stainless steel fittings of seamless and welded construction covered by the lastest revision of ANSI B 16.9, ANSI B 16.11, ANSI B 16.28, MSS-SP79 and MSS-SP95. Fittings differing from these ANSI and MSS standards shall be identified with the marking "S9". A-405 Covers on grade (P-24) of seamless ferritic alloy-steel pipe specially heated treated for high temperature service. A-420 This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction covered by the lastest revision of ANSI B 16.9, ANSI B 16.11, ANSI B 16.28, MSS-SP79 and MSS-SP95. Fittings differing from these ANSI and MSS standards shall be identified with the marking "S6". These fittings are for use in pressure piping and pressure vessel service at low temperatures. A-500 Covers cold formed welded and seamless carbon square, rectangular, or special shape structural tubing for general structural purposes. Covers three grades: Grade A - 39,000 psi Min. Yield Grade B - 46,000 psi Min. Yield Grade C - 50,000 psi Min. Yield A-501 Covers hot formed welded and seamless carbon steel, rectangular, square, or special shape tubing for general structural purposes. A-512 This specification covers cold-drawn buttweld carbon steel tubes for use as mechanical tubing. It covers round, square, rectangular, and special shapes. Common grades in warehouse stock are 1010, 1015, and 1020. A-513 This specification covers electric-resistance welded carbon and alloy steel tubing for use as mechanical tubing. It covers round, square, rectangular, and special shapes made from hot or cold rolled steel. It covers "as welded," "sink drawn," "mandrel drawn," and "special smooth inside diameter." A-519 This specification covers a multitude of grades of carbon and alloy steel seamless mechanical tubing. It covers both hot finished and cold drawn tubing up to and including 12-3/4 in. outside diameter with wall thickness as required. A-524 Covers seamless carbon steel pipe for process piping applications. Suitable for welding, bending, flanging, and similar forming operations. Two grades are covered: Grade I (0.375 in. wall thickness and under) and Grade II (greater than 0.375 in. wall thickness). A-618 Covers three grades of hot-formed welded and seamless high-strength low-alloy square, rectangular, round or special shape tubing for use in bridge or building construction and general structural purposes. A-671 Covers electric-fusion-welded steel pipe with filler metal added, fabricated from pressure vessel quality plate of several analyses and strength levels and suitable for service at atmospheric and lower temperatures. A-672 Covers electric-fusion-welded steel pipe with filler metal added, fabricated from pressure vessel quality plate of several analyses and strength levels and suitable for high-pressure service at moderate temperatures. A-691 Covers electric-fusion-welded carbon and alloy steel pipe with filler metal added, fabricated from pressure vessel quality plate of several analyses and strength levels and suitable for high-pressure service at high temperatures.

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