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 4—This table and notes cover the tolerances for? NOTE 4—The variations given in this table apply to plates that have a minimum speci? Accordingly, the following deductions shall be made from the base elongation requirements in 2 in. Other weld metals may be employed that are compatible with the plate being repaired, if so approved by the purchaser.
ICS Number Code Interpolated values shall be rounded to the nearest whole number as ast, in Practice E Materials and Manufacture 5.
Strain Age Test S This general requirements speci? A; A; A in thicknesses to 1 in.
A plot of the data is not required. E By agreement between the purchaser and the supplier, the heat analysis limit for titanium is permitted to be increased to a value not higher than 0. Magnetic Particle Examination S9.
Restricted Limits on Elements For each heat, based upon the heat analysis, the content shall not exceed 0. NOTE 5—Waviness tolerances for rectangular plates, universal mill plates, and circular and sketch plates do not apply. To 32, excl 32 to 84, excl 84 to a200, excl toexcl and over Variations Over Speci? Maximum permissible camber, in. If bend lines are parallel to the direction of?
Sharp corners on edges and on punched or gas cut holes should be removed by chamfering or grinding to a radius. Size, 10 by 5 mm [J]            13?
NOTE 7—Plates shall be in horizontal position on a? The acceptability of defects revealed by this examination shall be judged in accordance with the requirements for quality in 9.
Standard Specification for General Requirements for Steel Plates for Pressure Vessels
Testing temperature as speci? In general, such temperatures are higher as the steel thickness increases. For plates produced from coil, all injurious surface imperfections shall be removed by the processor.
Notwithstanding the absence of s20m signature, the organization submitting the report is responsible for the content of the report.
All tests except product analysis and inspection shall be made at the place of manufacture prior to shipment, unless otherwise speci? Restricted Chemical Requirements S It shall be demonstrated that the cooling rate of the tension test specimen is no faster than, and not substantially slower than, that attained by the method described in This value shall be based upon the heat analysis. The suggested radii listed in Table X4. Permissible Variations Over Speci?
Such plates shall have been quali? The surface of the dies in the area of radius should be smooth. B In addition for each heat, based upon the heat analysis, the sum of chromium and molybdenum shall not exceed 0. This specification covers a group of common requirements that apply to rolled steel plates for pressure vessels. The purchaser shall be informed of the procedure followed in heat treating the specimens. Such weld metals shall be 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 reports shall state whether the plates only, the test coupons only, or both plates and test coupons were heat treated.
The year-date of the speci? The survey data consists of z20m values obtained from six locations in addition to the locations speci? The test specimens shall conform to the requirements for either the 11? The defects may be removed and replaced with weld metal see 9. In addition, for elements that are listed in Table 1 but are not speci? NOTE 5—This table and these notes cover the?
Flatness Tolerances for Speci? The testing procedures of this general requirements speci?
ASTM A 20 A20M _百度文库
Historical Version s – view previous versions of standard Translated Version s: Size, 10 by 7. Reduction of area shall be determined only on the 0. 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. s20
Additional Tension Test S4. Charpy V-notch tests shall be conducted on the strain aged specimens. This a200 does not apply to those plates with speci?