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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Ast, 5—This table and notes cover the? Flatness Tolerance from Tables A2. For quenched and tempered plates, one impact test shall be made from each plate, as heat treated. The purchaser shall be informed of the procedure followed in heat treating the specimens.
Standard Specification for General Requirements for Steel Plates for Pressure Vessels
Size, 10 by 7. A number in parentheses indicates the year of last reapproval.
In such cases, the manufacturer or processor shall be noti? If the plate thickness is insufficient to obtain full-size specimens, the largest possible subsize specimens shall be used. If the heattreatment temperatures are not speci? Mandatory conformance of these additional tests with the speci?
D For any type. Variations from a Flat Surface for Speci?
ASTM A 20 A20M _百度文库
Vacuum Carbon-Deoxidized Steel S NOTE 3—For thickness measured at any location other than that speci? The defects may be removed and replaced with weld metal see 9. If the material is to be measured by equipment reporting dimensions as decimals, conversion of permitted variations from fractions of an inch to decimals shall be made to three decimal places; using the rounding method prescribed in Practice E The actual test temperature used shall be reported with the test results.
Accordingly, the following deductions shall be made from the base elongation requirements in 2 in. Therefore, the requirements of In general, such temperatures are higher as the steel thickness increases. The coupon shall be heat treated in accordance with the applicable product speci? Also, if purchaser speci?
To 6, excl 6 to 10, excl 10 to 12, excl 12 to 20, excl 20 to 25, excl 25 to 50, excl 50 toexcl toexcl toexcl toexcl toexcl toincl TABLE A2. Notwithstanding the absence of a signature, the organization submitting the EDI transmission is responsible for the content of the report.
Restricted Limits a220 Elements For each heat, based upon the heat analysis, the content shall not exceed 0. NOTE 4—For thickness measured at any location other than that speci?
When the larger dimension is from 36 to 72 in. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Permission rights to photocopy the standard may also be secured from the ASTM website www.
Link to Active This link will always route to the current Active version of the standard. Two tension test coupons shall be taken from each quenched and tempered plate, as heat treated. NOTE 2—Thickness shall be measured 10 to 20 mm from asgm longitudinal edge.
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 Except as allowed by ICS Number Code 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. The specimens for testing shall be obtained as required for the room temperature tension tests speci?
For plates produced from coil, see also 3.
NOTE 8—Plates shall be in horizontal position on a? Reduction of Area Measurement S NOTE 4—This table and these notes cover the variations for?