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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Sharp corners on edges and on punched or gas cut holes should be removed by chamfering or grinding to a radius. If the plate thickness is insufficient to obtain full-size specimens, the largest possible subsize specimens shall a2m0 used.

ASTM A 20 A20M _百度文库

The hightemperature tests shall be made in accordance with the requirements of Practice E It is, therefore, incumbent on designers and engineers to use sound engineering judgement when using tension test results shown on mill test reports. All tests except product analysis and inspection shall be made at the place of manufacture prior to shipment, unless otherwise speci?

NOTE 2—Thickness to be measured at 3? ICS Number Code a0m Size, 10 by 3. Size, 10 by 7. Q20 Carbon Equivalent for Weldability S Unless otherwise provided in the applicable product speci? The effect is not so pronounced in thicker plates.

These supplementary requirements shall apply only if speci? Originally approved in Individual reprints single or multiple copies of this standard may be obtained by w20 ASTM at the above address or at phonefaxor service astm.

Standard Specification for General Requirements for Steel Plates for Pressure Vessels

After heat treatment or reheat treatment, a set of three specimens shall be tested and each shall equal q20 exceed the speci? High-Temperature Tension Tests S7. A B Laminar-type discontinuities 1 in.


Yield strength tests, tension tests, and notch-toughness tests shall be made in accordance to the product specification to conform to the specified requirements.

NOTE 2—Plates with universal rolled edges will be gas cut to length only. Interpolated values shall be rounded to the nearest whole number as prescribed in Practice E Class V is Killed with a speci? The waviness tolerance is a function of the? The coupon shall be heat treated in accordance with the applicable product speci? Inspection and Testing One a02m metre of rolled steel is assumed to have a mass of kg, unless otherwise stated in the applicable product speci?

When tighter bends are required, the manufacturer should be consulted.

When the longer dimension is from 36 to 72 in. Normalizing or quenching and tempering the product will reduce the degree of variation.

The differ- ence in cooling rate can result in measurable differences in the mechanical properties throughout a coil. NOTE 2—Any stress relief of test specimens intended to simulate post-weld heat treatment is not included in the above heat treatment. Over 50 mm to 75 mm, incl. Such testing procedures are not intended to de? The width across the shoulders of the female die should be at least 8 times the plate thickness.

Flatness Tolerances for Speci? Restricted Limits on Elements For each heat, based upon the heat analysis, the content shall not exceed 0. Drop-Weight Test for Plates 0.


The survey data consists of test values obtained from six locations in addition to the locations speci? Restricted Chemical Requirements S If you feel that x20 comments have not received a fair hearing you should make a220m views known to the ASTM Asgm on Standards, at the address shown below. A; A; A in thicknesses to 1 in.

Those that are considered suitable for use with a product speci? This standard has been approved for use by agencies of the Department of Defense. NOTE 3—For thickness measured at any location other than that speci? Heat treatment, strain aging, test temperature, and acceptance criteria shall be as agreed upon between the manufacturer or processor and the purchaser.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

The test temperature range shall be wide enough to establish the upper w20 lower shelf energies, with sufficient testing at intermediate temperatures to permit plotting a reasonable smooth curve. Over 75 mm to mm, incl.

For tests using specimens taken from such heat treated test coupons, the test results shall meet the requirements of the applicable product speci? Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Reduction of area shall be determined a20j on the 0.

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