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1.1 This specification covers several grades of carbon and alloy steel seamless mechanical tubing. The grades are listed in Tables 1-3. When welding is used for joining the weldable mechanical tube grades, the welding procedure shall be suitable for the grade, the condition of the components, and the intended service.

TABLE 1 Chemical Requirements of Low-Carbon Steels

Grade Designation	Chemical Composition Limits, %
Grade Designation	Carbon^A	Manganese^B	Phosphorus,^B max	Sulfur,^B max

MT 1010	0.05–0.15	0.30–0.60	0.040	0.050
MT 1015	0.10–0.20	0.30–0.60	0.040	0.050
MT X 1015	0.10–0.20	0.60–0.90	0.040	0.050
MT 1020	0.15–0.25	0.30–0.60	0.040	0.050
MT X 1020	0.15–0.25	0.70–1.00	0.040	0.050

^A Limits apply to heat and product analyses.

^B Limits apply to heat analysis; except as required by 6.1, product analyses are subject to the applicable additional tolerances given in Table 5.

TABLE 2 Chemical Requirements of Other Carbon Steels

Grade Designation	Chemical Composition Limits, %^A
Grade Designation	Carbon	Manganese	Phosphorus, max	Sulfur, max

1008	0.10 max	0.30–0.50	0.040	0.050
1010	0.08–0.13	0.30–0.60	0.040	0.050
1012	0.10–0.15	0.30–0.60	0.040	0.050
1015	0.13–0.18	0.30–0.60	0.040	0.050
1016	0.13–0.18	0.60–0.90	0.040	0.050
1017	0.15–0.20	0.30–0.60	0.040	0.050
1018	0.15–0.20	0.60–0.90	0.040	0.050
1019	0.15–0.20	0.70–1.00	0.040	0.050
1020	0.18–0.23	0.30–0.60	0.040	0.050
1021	0.18–0.23	0.60–0.90	0.040	0.050
1022	0.18–0.23	0.70–1.00	0.040	0.050
1025	0.22–0.28	0.30–0.60	0.040	0.050
1026	0.22–0.28	0.60–0.90	0.040	0.050
1030	0.28–0.34	0.60–0.90	0.040	0.050
1035	0.32–0.38	0.60–0.90	0.040	0.050
1040	0.37–0.44	0.60–0.90	0.040	0.050
1045	0.43–0.50	0.60–0.90	0.040	0.050
1050	0.48–0.55	0.60–0.90	0.040	0.050
1518	0.15–0.21	1.10–1.40	0.040	0.050
1524	0.19–0.25	1.35–1.65	0.040	0.050
1541	0.36–0.44	1.35–1.65	0.040	0.050

^A The ranges and limits given in this table apply to heat analysis; except as required by 6.1, product analyses are subject to the applicable additional tolerances given in Table Number 5.

1.2 This specification covers both seamless hot-finished mechanical tubing and seamless cold-finished mechanical tubing in sizes up to and including 12 ³/₄ in. (323.8 mm) outside diameter for round tubes with wall thicknesses as required.

1.3 The tubes shall be furnished in the following shapes, as specified by the purchaser: round, square, rectangular, and special sections.

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 the standard. The values given in parentheses are for information only.

Main informations

Collections

ASTM american standards

Publication date

March 2012

Number of pages

13 p.

Reference

ASTM A519-06(2012)

Classification index

A0519-06R12

Sumary

Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing

This specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished. The steel used in the mechanical tubing may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required. The seamless tubing is a tubular product made without a welded seam. It is usually manufactured by hot working steel, and if necessary, by subsequently cold finishing the hot-worked tubular product to produce the desired shape, dimensions and properties. The tubes shall be furnished in the following shapes: round, square, rectangular and special sections. Heat analysis shall be made to determine the percentages of the elements specified. If secondary melting processes are used, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot of each primary melt. The tubing shall be coated with a film of oil before shaping to retard rust when specified

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