ASTM A20 A20M PDF

ASTM A 20 A20M _冶金/矿山/地质_工程科技_专业资料。Designation: A20/ A20M? 13 Standard Speci?cation for General Requirements. ASTM A20/A20M Standard Specification for General Requirements for Steel Plates for Pressure Vessels. standard by ASTM International. ASTM A20/A20M: Standard Specification for General Requirements for Steel Plates for Pressure Vessels.

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When tighter bends are required, the manufacturer should be consulted. NOTE 3—For thickness measured at any location other than that speci? C For thicknesses over 4 in.

Yield strength tests, tension tests, and notch-toughness tests shall be made in accordance to the product specification to conform to the specified requirements. Maximum permissible camber, in. Class IV is Killed with a speci? Variations Over for All Speci?

Restrictive Plate Flatness S The purchaser should, therefore, be aware that testing of one plate-as-rolled does not provide assurance that all locations within a plate-as-rolled will be identical in toughness with the location tested. Drop-Weight Test for Plates 0. Therefore, the requirements of The coupon shall be heat treated in accordance with the applicable product speci? All mechanical-property tests shall be repeated and the plate surface shall be reexamined for surface defects when it is resubmitted for inspection.

The provisions of ICS Number Code Agreement shall be reached between the purchaser and the manufacturer or processor as to the number of plates to be tested and whether a maximum NDT temperature is mandatory or if the test results are for information only. Through-Thickness Tension Tests S If a test temperature is not speci?

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This abstract is a brief summary of the referenced standard.

Standard Specification for General Requirements for Steel Plates for Pressure Vessels

Accordingly, the following deductions shall be made from the base elongation requirements in w20m applicable product speci? NOTE 1—Such austenitic grain size numbers may be achieved with lower contents of austenitic grain re?

Size, 10 by 6. Class III is Killed with a speci? ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. If only one organization is involved in the hot rolling and processing operations, that organization is termed the manufacturer for the hot rolling operation and the processor for the processing operations. The tensile properties will vary within the same plate-as-rolled or piece, be it as-rolled, control-rolled, or heat-treated.

In case of dissatisfaction with the results of the tests, the supplier shall have the option of making claim for a rehearing within that time.

Size, 10 by 3. NOTE 3—When the longer dimension is under mm, the variation shall not exceed 10 mm. Reduction of Area Measurement S Flatness Tolerance from Tables A1.

For quenched and tempered plates, one impact test shall be made from each plate, as heat treated.

Size, 10 by 7. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Combining values from the two systems may result in non-conformance with the standard. Such weld metals shall be quali? Length Toexcl Width over 8 to 60, excl 60 to 84, excl 84 toexcl and over over 8 to 60, excl 60 to 84, excl 84 toexcl and over over 8 to 60, excl 60 to 84, excl 84 toexcl and over over 8 to 60, excl 60 to 84, excl 84 toexcl and over over 8 to 60, excl 60 to 84, excl 84 toexcl and over over 8 to 60, excl 60 to 84, excl 84 toexcl and over over 8 to 60, excl 60 to 84, excl 84 toexcl and over Permissible Variations over Speci?

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The test specimens shall conform to the requirements for either the 11?

ASTM A 20 A20M _百度文库

The effect is not so pronounced in thicker plates. To 2, excl 2 to 4, excl 4 to 6, excl 6 to 8, excl 8 to 15, incl Variations Over for All Speci? NOTE 4—This table and these notes cover the? For such material, if so stated in the applicable product speci? Other weld metals may be employed that are compatible with the plate being repaired, if so approved by the purchaser. For drop-weight test, give testing temperature4.

NOTE 7—Plates shall in a horizontal position on a? Sharp corners on edges and on punched or gas cut holes should be removed by chamfering or grinding to a radius. Historic limitations of a plate based q20m dimensions thickness, width, and length do not take into account current production and processing capabilities. The number of plates tested and the specimen orientation shall be the same as in