ASTM-B468 Standard Specification for Welded UNS N08020 Alloy Tubes

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Standard Specification for Welded UNS N08020 Alloy Tubes



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1.1 This specification covers welded UNS N08020, N08024, and N08026 alloy boiler, heat exchanger, and condenser tubes for general corrosion-resisting and low- or high-temperature service.

1.2 This specification covers tubes 1/8 to 5 in. (3.18 to 127 mm), inclusive, in outside diameter and 0.015 to 0.500 in. (0.38 to 12.70 mm), inclusive, in wall thickness. Table 2 of Specification B751 lists the dimensional requirements of these sizes. Tubes having other dimensions may be furnished provided such tubing complies with all other requirements of this specification.

1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.


Carpenter alloy; Chromium-nickel-iron-molybdenum-copper alloy-pipe/tube; Condenser and heat exchanger systems-nickel alloy; Corrosive service applications-tube (Ni/Ni alloy); Nickel alloys-tube; Nickel-chromium alloys-wrought; Nickel-iron-chromium alloys; Potassium Iodide method; Temperature service applications-high; Welding/welds-Ni/Ni alloy materials; tubes-Ni alloy, welded (for general corrosive and low-/high-temperature; service), UNS N08020/N08024/N08026, spec.,; UNS N08020 (Ni-Fe-Cr alloy, Carpenter 20Cb3); UNS N08024 (Cr-Ni-Fe-Mo-Cu alloy, columbium stabilized); UNS N08026 (Ni-Cr wrought alloy, Carpenter 20Mo6); tubes (nickel alloy), welded, for corrosive and low-/high-temperature; service, spec; ICS Number Code 77.150.30 (Copper products)

To find similar documents by ASTM Volume:

02.04 (Nonferrous Metals--Nickel, Cobalt, Lead, Tin, Zinc, Cadmium, Precious, Reactive, Refractory Metals and Alloys; Materials for Thermostats, Electrical Heating and Resistance Contacts, and Connectors)

To find similar documents by classification:

77.150.30 (Copper products)

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Document Number


Revision Level

2010 R20 EDITION



Modification Type


Publication Date

Oct. 20, 2020

Document Type


Page Count

2 pages

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