ASME SA-179 pdf free download

ASME SA-179-SA-179M-2021 pdf free download.Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes.
1.1 This specification covers minimum-wall-thickness. seamless cold-drawn low-carbon steel tubes for tubular heal exchangers, condensers, and similar heat transfer apparatus.
1.2 This specification covers tubes ¼ to 3 in. 13.2 to 76.2 mml, inclusive, in outside diameter.
Nom lTubing smaller in outside diameter and having a thinner wall than indicated in this specification is available. Mechanical property requirements do not apply to tubing smaller than ¼ in. 13.2 mml in outside diameter or with a wall thickness under 0.015 in. [0.4 mml.
1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must he used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound Units shall apply unless the “M” designation of this specification is specified in the order.
2. Referenced Documents
2. I ASTM Standards:
A450/A450M Specification for General Requirements for Carbon and Low Alloy Steel Tubes
3. Ordering Information
3.1 Orders for material under this specification should include the following, as required. to describe the desired material adequately:
3. 1 . I Quantity (feet, metres, or number of lengths),
3.1.2 Name of material (seamless tubes).
3.1.3 Manufacture (cold-drawn).
3.1.4 Size (outsidc diameter and minimum wall thickness).
3.1.5 Length specitic or random).
3.1.6 Optional requirements (product analysis. Section 9. flange test, 11.3).
3.1.7 Test report required (Certification Section of Specification A45WA45OM.
3.1.8 Specification number, and
3.1.9 Special requirements
4. General Requirements
4.1 Material furnished under this specification shall conlorin to the applicable requirements of the current edition of Specification A450/A450M. unless otherwise provided herein.
5. Manufacture
5. 1 Tubes shall be made by the seamless pncss and shall be cold drawn.
6. Heat Ireatment
6.1 Tubes shall be heat treated after the final cold draw pass at a temperature of I 2(XYF 1650’CI or higher.
7. Surface (‘onditlon
7.1 Finished tubes shall he free of scale. A slight amount of oxidition will not be considered as scale.
8. Chemical Composition
K. I The steel shall confonn to the following requirements as to chemical composition:
Ca4bcn.% 006-0.16
Manganese, % 027-063
Phospliorus,maz,% 0.035
Sultuw. mar. % 0.035
8.2 Supplying an alloy grade that specifically requires the addition of any element other than those listed in 8.1 is not permitted.
9. Product Analsis
9.1 When requested on the purchase order, a product analysis shall be made by the supplier from I tube per 250 pieces or when tubes are identified by heat, one tube per heat shall he analyzed. The chemical composition thus determined shall conform to the requirements specified.
9.2 If the original test for product analysis fails. retests of two additional billets or tubes shall be made. Both retests, for the elements in question, shall meet the requirements of the specification; otherwise all remaining material in the heat or lot (Note 2) shall be rejected or, at the option of the producer. each billet or tube may be indisidually tested for acceptance. Billets or tubes which do not meet the requirements of the specilicalion shall be rejected.
Non 2—A lot ‘unsist’. of 250 tubes.
IlL hardness Requirements
10.1 The tubes shall hase a hardness number not exceeding
72 HRB.
Ii. Mechanical Tasts Required
11.1 Flattening Text—One flattening test shall be made on specimens from each of two tubes from each lot (Note 2) or fraction thereof.
11.2 Flaring Text— One Ilaring test shall be made on specimnens from each of tso tubes from each lot (Note 2) or fraction thereof.ASME SA-179 pdf download.