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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Accordingly, the following deductions shall be made from the base elongation requirements in the applicable product speci? Combining values from the two systems may result in non-conformance with the standard.

In general, such temperatures are higher as the steel thickness increases. Restricted Limits on Elements For each heat, based upon the heat analysis, the content shall not exceed 0. Reduction of Area Measurement S 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.

All mechanical-property tests shall be repeated and the plate surface shall be reexamined aastm surface defects when it is resubmitted for inspection.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? NOTE 3—When the longer dimension is under 36 in. Class I is Other Than Killed with a speci? B Permissible variations in length apply also to Universal Mill plates up to 12 in.

When the larger dimension is from 36 to 72 in. NOTE 5—Waviness tolerances for rectangular plates, universal mill plates, and circular and sketch plates do not apply.

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Class VI is Killed with a speci? A plot of the data is not required.

ASTM A 20 A20M _百度文库

If bend lines are parallel to the direction of? The required chemical analysis as well as the carbon equivalent shall be reported.

B Full size 10 by 10 mm specimens. NOTE 4—This table and these notes cover the variations for?

Standard Specification for General Requirements for Steel Plates for Pressure Vessels

If a test temperature is not speci? For transverse tests, the available minimum temperature may be somewhat higher. NOTE 5—This table and notes aatm the?

When the longer dimension is from to mm, inclusive, the? These radii apply when the precautions listed in X4. Interpolated values shall be rounded to the nearest whole number as prescribed in Practice E If it is necessary to bend with the bend awtm parallel to the direction of?

The width across the shoulders of the female die should be at least 8 times the plate thickness. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. C Full size 10 by 10 mm specimens. ICS Number Code Through-Thickness Tension Tests S The defects may be removed and replaced with weld metal see 9. If, during decoiling, the amount of material decoiled is less than that required to reach the next standard test location, a test for quali?

Sufficient full-size specimens were taken from each sample so that three longitudinal and three transverse specimens could be broken at three test temperatures de? The heat number, the plate identi? Maximum permissible camber, in. D By agreement between the purchaser and the supplier, the heat analysis limit for columbium is permitted to be increased to a value not higher that 0.

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Notwithstanding the absence of a signature, the organization submitting the report is responsible for the content of the report. 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.

The survey data consists of test values obtained from six locations in addition to the locations speci? 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.

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. Also, if purchaser speci?

The actual test temperature used shall be reported with the test results. Historic limitations of a plate based upon dimensions thickness, width, and ashm do not take into account current production and processing capabilities.

For plates produced from coil, the processor shall furnish the required certi? D For any type. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.