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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The number of plates tested and the specimen orientation shall be the same as in Two tension test coupons shall be taken from each quenched and tempered plate, as heat treated.

To qualify any plate to a particular product speci? NOTE 8—Plates shall be in a horizontal position on a? Size, 10 by 7. Mandatory conformance of these additional tests with the speci? The tensile properties will vary within the same plate-as-rolled or piece, be it as-rolled, control-rolled, or heat-treated.

For quenched and tempered plates, the two tension test coupons shall be taken from opposite ends of the plate. For Charpy V-notch test, include test specimen a20k, testing temperature, and acceptance criteria.

Accordingly, the following deductions shall be made from the base elongation requirements in the applicable product speci?

This standard has been approved for use by agencies of the Department of Defense. Strain Age Test S The effect is not so pronounced in thicker plates. The number of plates to be so tested shall be subject to agreement between the purchaser and the manufacturer or processor. Combining values from the two systems may result in non-conformance with the standard.

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The axis of the test specimen shall be located midway between the center of thickness and the top or bottom surface of the plate. One cubic metre of rolled steel is assumed to have a mass of kg, unless otherwise stated in the applicable product speci?

The test coupons shall be taken from the material after decoiling and leveling. Notwithstanding the absence of a signature, the organization submitting the EDI transmission is responsible for the content of the report.

All mechanical-property tests shall be repeated and the plate surface shall be reexamined for surface defects when it is resubmitted for inspection. 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 differ- ence in cooling rate can result in measurable differences in the mechanical properties throughout a coil.

Such requirements are provided for use if additional testing or additional restrictions are required by the purchaser, and apply only if speci?

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ASTM A 20 A20M _百度文库

The required chemical analysis as well as the carbon equivalent shall be reported. The specimens for analysis shall be taken adjacent to or from a broken tension test specimen. NOTE 5—This table and these notes cover the?

The waviness tolerance is a function of the? Maximum Carbon Equivalent for Weldability S Sampling and methods for chemical analysis are discussed. Historical Version s astk view previous versions of standard Translated Version s: The type of test and the acceptance criteria shall be as agreed upon between the manufacturer or processor and the purchaser.

Magnetic Particle Examination S9.

Standard Specification for General Requirements for Steel Plates for Pressure Vessels

In general, such temperatures are higher as the steel thickness increases. Except as allowed by Materials and Manufacture 5. Class IV is Killed with a speci?

Therefore, the requirements of 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. NOTE 5—This table and notes cover the? This exclusion does not apply to those plates with speci?