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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Standard Specification for General Requirements for Steel Plates for Pressure Vessels

It is, therefore, incumbent on designers and engineers to use sound engineering judgement when using tension test results shown on mill test reports. For quenched and tempered plates, the two tension test coupons shall be taken from opposite ends of the plate. Originally approved in This exclusion does not apply to those plates with speci? D For any type. The number of plates to be so tested shall be subject to agreement between the purchaser and the manufacturer or processor.

A; A; A in thicknesses to 25 mm, incl; or A B Permissible variations in length apply also to Universal Mill plates up to 12 in. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.

Size, 10 by 6. The year-date of the speci?

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ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. The test report shall indicate that the steel was vacuum carbon-deoxidized.

The purchaser should, therefore, be aware that testing aatm one plate-as-rolled does not provide assurance that all locations within a plate-as-rolled will be identical in toughness with the location tested.

Variations from a Flat Asmt for Speci? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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 effect is not so pronounced in thicker plates.

Two tension test coupons shall be taken from each quenched and tempered plate, as heat treated. If plates are furnished by the manufacturer or processor in accordance with Sampling and methods for chemical analysis are discussed. NOTE 5—This table and notes cover the?

NOTE 3—For thickness measured at any location other than that speci? If bend lines are parallel to the direction 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.

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The results obtained using this second test specimen shall meet the requirements of the applicable product speci? When the larger dimension is from to mm, inclusive, the permissible?

The surface of the dies in the area of radius should be smooth. The manufacturer shall report the specimen orientation, test temperature, and absorbed energy for each specimen tested.

Mandatory conformance of these additional tests with the speci? NOTE 2—Plates with universal rolled edges will be gas cut to length only.

The defects may be removed and replaced with weld metal see 9. The impact test coupons shall be subject to the same requirements as those speci? Variations Over for All Speci? For plates produced from coil, the processor shall furnish the required certi?

ASTM A 20 A20M _百度文库

A B Laminar-type discontinuities 1 in. Current edition approved Oct. To 1, excl 1 to 2, excl 2 to 4, excl 4 to 6, excl? C By agreement between the purchaser and the supplier, the heat analysis limit for vanadium is permitted to be increased to a value not higher than 0. The heat number, the plate identi?

Combining values from the two systems may result in non-conformance with the standard.