ASME A269 PDF

Quick Inquiry. ASTM A Covers grades of nominal-wall thickness, stainless steel tubing for general corrosion-resisting and low-or high-temperature services, as designated in standard. A AM Specification for general requirements for Flat-rolled stainless and Heat-Resisting steel plate, sheet, and strip. S 0.

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Quick Inquiry. ASTM A Covers grades of nominal-wall thickness, stainless steel tubing for general corrosion-resisting and low-or high-temperature services, as designated in standard.

A AM Specification for general requirements for Flat-rolled stainless and Heat-Resisting steel plate, sheet, and strip. S 0. Heat Treatment Requirements All material shall be furnished in the heat-treated condition. Except as provided in 6. Alternatively, for seamless tubes, immediately following 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.

Controlled structural or special service characteristics shall be specified as a guide for the most suitable heat treatment. When specified by the purchaser, a lower temperature stabilization or re-solution anneal shall be used subsequent to the initial high temperature solution anneal. Brinell or Rockwell hardness determination shall be made on specimens from two tubes from each lot.

The term lot applies to all tubes prior to cutting, of the same nominal diameter and wall thickness that are produced from the same heat of steel. When final heat treatment is in a batch-type furnace, a lot shall include only those tubes of the same size and the same heat which are heat treated in the same furnace charge.

When the final heat treatment is in a continuous furnace or when the heat-treated condition is obtained directly by quenching after hot forming, a lot shall include all tubes of the same size and heat, heat treated in the same furnace at the same temperature, time at heat, and furnace speed, or all tubes of the same size and heat, hot formed and quenched in the same production run.

For welded tubes, one reverse flattening test shall be made on a specimen from each ft m of finished tubing. Coiled tubing greater than ft m in length shall be sampled at both ends, a coil must be continuous without any circumferential butt welds.

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Historical Version s - view previous versions of standard. More A This specification covers nominal-wall-thickness, seamless and welded austenitic steel tubing for general corrosion-resisting and low- or high-temperature service. All material shall be furnished in the heat-treated condition. The steel shall conform to the chemical composition requirements. Different mechanical test requirements that includes, flaring test, flange test, hardness test, and reverse flattening test are presented. Also, each tube shall be subjected to the non-destructive electric test or the hydrostatic test.

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