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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NOTE 1—Such austenitic grain size numbers may be achieved with lower contents of austenitic grain re? Notwithstanding the absence of a signature, the organization submitting the report is responsible for the content of the report.

If the plate thickness is insufficient to obtain full-size specimens, the largest possible subsize specimens shall be used. In addition, for elements that are listed in Table 1 but are not speci? NOTE 2—Thickness shall be measured 10 to 20 mm from the longitudinal edge.

NOTE 3—When the longer dimension is under mm, the variation shall not exceed 10 mm. Flatness Tolerance from Tables A1. The data are presented in tables of probability that tensile properties at other than the official location may differ from those of the reported test location.

Reduction of area shall be determined only on the 0. The defects may be removed and replaced with weld metal see 9. NOTE 8—Plates shall be in horizontal position on a?

When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized. B Permissible variations in length apply also to Universal Mill plates up to 12 in. Originally approved in Such processing operations include decoiling, leveling, cutting to length, testing, inspection, conditioning, heat treatment if applicablepackaging, marking, loading for shipment, and certi? It is, therefore, incumbent on designers and engineers to use sound engineering judgement when using tension test results shown on mill test reports.

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See Ordering Information in Speci?

Charpy V-notch tests shall be conducted on the strain aged specimens. NOTE 4—The variations given in this table apply to plates that have a minimum speci? A B Laminar-type discontinuities 1 in. C By agreement between the purchaser and the supplier, the aztm analysis limit for vanadium is permitted to be increased to a value not higher than 0.

Standard Specification for General Requirements for Steel Plates for Pressure Vessels

Such differences are in addition to the effects on mechanical properties caused by differences in heat analysis and chemical segregation. Except as allowed by Strain Age Test S The testing procedures of this general requirements speci?

To 6, excl 6 to 10, excl 10 to 12, excl 12 aztm 20, excl 20 to 25, excl 25 to 50, excl 50 toexcl toexcl toexcl toexcl toexcl toincl TABLE A2. The provisions of For plates produced aztm coil, the test coupon locations shall be the same as for Charpy V-notch tests.

Aztm Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

For plates produced from coil, see also 3. Unless otherwise agreed upon with the purchaser, it is the responsibility of the manufacturer to select suitable process procedures. 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. Combining values from the two systems may result in non-conformance with the standard.

Such testing procedures are not intended to de? The manufacturer shall report 2a0 specimen orientation, test temperature, and absorbed energy for each specimen tested. Stainless Chromium Steel-Clad Plate.

The surface of the dies in q20 area of radius should be smooth. B Permissible variations in length apply also to Universal Mill plates up to mm in width for thicknesses over 50 to 65 mm, incl, except for alloy steel up to 50 mm thick. These radii apply when the precautions listed in X4. Other weld metals may be employed that are compatible with the plate being repaired, if so approved by the purchaser.

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The test coupons shall be taken from the material after decoiling and leveling. NOTE 5—Waviness tolerances for rectangular plates, universal mill plates, and circular and sketch plates do not apply. NOTE 3—When the longer dimension is under 36 in. The specimens shall represent wstm plates in the?

When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized.

ASTM A 20 A20M _百度文库

Additional Tension Test S4. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

Permitted variations for other sizes are subject to agreement between the purchaser and the manufacturer or processor, whichever is applicable.

B For thicknesses of 4 in. If, during decoiling, the amount of material decoiled is less than that required to reach the next standard test location, a test for quali? Maximum permissible camber, in. When the larger dimension is from 36 to 72 in. Material that does not form satisfactorily atsm fabricated in accordance with Q20m X4. A; A; A in thicknesses to 25 mm, incl; or A If plates are furnished by the manufacturer or processor in accordance with Therefore, the requirements of Notwithstanding the absence of a signature, the organization submitting the EDI transmission is responsible for the content of the report.