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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ASTM A 20 A20M _百度文库
Plate Nominal Thickness Range, in. The actual test temperature used shall be reported with the test results. This specification covers a group of common requirements that apply to rolled steel plates for pressure vessels. Heat treatment, strain aging, test temperature, and acceptance criteria shall be as agreed upon between the manufacturer or processor and the purchaser.
If the necessary tests required by a product speci? Thus, a range from 60 to 72 in. This asfm has been approved for use by agencies of the Department of Defense.
This value shall be based upon the heat analysis. Unless otherwise agreed upon with the atsm, it is the responsibility of the manufacturer to select suitable process procedures.
The heat number, the plate identi? NOTE 4—This table and these notes cover the variations for? After selection of the appropriate gage length, the elongation requirement for the alternative gage length shall be deemed not applicable.
Stainless Chromium Steel-Clad Plate. NOTE 3—When the longer dimension is under mm, the variation shall not exceed 10 mm. The percent shear fracture appearance shall also be recorded if speci?
Standard Specification for General Requirements for Steel Plates for Pressure Vessels
A; A; A in thicknesses to 25 mm, incl; or A Lateral expansion and percent shear shall also be reported when z20 Interpolated values shall be rounded to the nearest whole number as prescribed in Practice E If a test temperature is not speci? For Charpy V-notch test, include test specimen orientation, testing temperature, and acceptance criteria.
Size, 10 by 3. Except as allowed by The reports shall state whether the plates only, the test coupons only, or both plates and test coupons were heat treated. For drop-weight test, s20 testing temperature4.
Class III is Killed with a speci? 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. Mandatory conformance of such additional tests with the speci? Thickness over 2 in.
Such testing procedures are not intended to de? Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefax axtm, or service astm. Such differences are in addition to the effects on atsm properties caused by differences in heat analysis and chemical segregation.
Combining values from the ast systems may result in non-conformance with the standard. NOTE 2—Thickness shall be measured 10 to 20 mm from the longitudinal edge. Size, 10 by 5 mm [J]            13?
The test report shall indicate that the steel was vacuum carbon-deoxidized. Size, 10 by 7. Size, 10 by 2. Restrictive Plate Flatness S The effect is not so pronounced in thicker plates. Such plates shall have been quali?
This exclusion does not apply to those plates with speci? Each of the three retest specimens shall equal or exceed the speci? The x20m obtained using this second test specimen shall meet the requirements of the applicable product speci?
Testing temperature as speci? B Full size 10 by 10 mm specimens. NOTE 5—This table and these notes cover the? Lower sulfur levels and sul? Charpy V-notch tests shall be conducted on the strain aged specimens. The testing procedures of this general requirements speci?
If heat treatment of plate is s20m be performed by the fabricator, this is to be stated. NOTE 4—This table and notes cover the tolerances for? To 1, excl 1 to 2, excl 2 to 4, excl 4 to 6, excl?