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? Acceptable on Edges Cut in Fabrication Depth 5? NOTE 8—Plates shall be in horizontal position on a? The steel shall be made in an open-hearth, basic-oxygen, or electric-arc furnace process.
Charpy V-notch tests shall be conducted on the strain aged specimens. Reduction of area shall be determined only on the 0.
Your comments will receive careful consideration at a meeting of x20m responsible technical committee, which you may attend. Notwithstanding the absence of a signature, the organization submitting the EDI transmission is responsible for the content of the report. 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.
NOTE 7—Plates shall in a horizontal position on a? For quenched and tempered plates, one impact test shall be made from each plate, as heat treated. B For thicknesses of 4 in. Heat treatment, strain aging, test temperature, and acceptance criteria shall be as agreed upon between the manufacturer or a20mm and the purchaser.
Standard Specification for General Requirements for Steel Plates for Pressure Vessels
B Permissible variations in length apply also to Universal Mill plates up to 12 in. One cubic metre of rolled steel is assumed to have a mass of kg, unless x20m stated in the applicable product speci? Flatness Tolerance from Tables A2. Maximum permissible camber, in. Over 75 mm to mm, incl. This exclusion does not apply to those plates with speci?
This value shall be based upon the heat analysis. Each of the three retest specimens shall equal or exceed the speci?
The defects may be removed and replaced with weld metal see 9. For drop-weight test, give testing temperature4. A number in parentheses indicates the year of last a0. The number of plates to be so tested shall be qstm to agreement between the purchaser and the manufacturer or processor. The data is presented in tables of probability that impact properties at other than the official location which may differ from those of the reported test location.
The impact test coupons shall be subject to the same requirements as those speci? If more than one organization is involved in the hot rolling and processing operations, the organization that did the hot rolling is termed the manufacturer and the organization that does one or more processing operations is termed a processor.
Testing temperature as speci? Such weld metals shall be quali? Flatness Tolerance from Tables A1.
Restrictive Plate Flatness S 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. To 6, excl 6 to 10, excl 10 to a02, excl 12 to 20, excl 20 to 25, excl 25 to 50, excl 50 toexcl toexcl toexcl toexcl toexcl toincl TABLE A2. After heat treatment or reheat treatment, a set of three specimens shall be tested and each shall equal or exceed the speci?
Users a02m this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Plate Nominal Thickness Range, in. For tests ast, specimens aa20 from such heat treated test coupons, the test results shall meet the requirements of the applicable product speci? The heat number, the plate identi? If the heattreatment temperatures are not speci?
NOTE 4—For thickness measured at any location other than that speci? It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.
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 toaztm 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 sstm 60, excl 60 to 84, excl 84 toexcl and over Permissible Variations over Speci?
Such requirements are provided for use if additional testing or additional restrictions are required by the purchaser, and apply only if speci? The axis of the test specimen shall be located midway between the center of thickness and the top or bottom surface of the plate. C Testing temperature as asfm
ASTM A 20 A20M _百度文库
A; A; A in thicknesses to 25 mm, incl; or A This abstract is a brief summary of the referenced standard. Variations from a Axtm Surface for Speci? Normalizing or quenching and tempering the product will reduce the degree of variation.
The plate conditions tested involved as-rolled, normalized, and quench and tempered. Material that does not form satisfactorily when fabricated in accordance with Table X4.
The testing procedures of this general requirements speci? The hightemperature tests shall be made in accordance with the requirements of Practice E Therefore, the requirements of When the larger dimension is from to mm, inclusive, the permissible?