ASME SA-789/SA-789M free download

09-30-2020 comment

ASME SA-789/SA-789M pdf free download. Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service.
ASME SA-789/SA-789M covers grades of nominal wall thick Iess, stainless steel tubing for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated tem peratures.
The values stated in either SI units or inch-pound units re to be regarded separately as standard. The values stated in each system may not be exact equivalents: therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Within the text. the SI units are shown in brackets. The inch-pound units shall apply unless the M designation of this specification is specified in the order.
6. Heat Treatment
6. 1 All tubes shall be furnished in the heat-treated condition in accordance with the procedures shown in Table 2. For seamless tubes, as an alternate to final heat treatment in a continuous furnace or batch-type furnace, immediately follow- ing hot forming while the temperature of the tubes is not less than the specified minimum solution treatment temperature. tubes may be individually quenched in water or rapidly cooled by other means
7. Chemical Composition
7. 1 The steel shall conform to the chemical requirements prescribed in Table 1.

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