Scope of ASTM A737

ASTM A737 steel plate is used for piping and making pressure vessels, material with high strength and low alloy steel. It inlcudes two grades of Grade B [Min Y.S. 345Mpa] and Grade C [Min Y.S. 415Mpa].

Maximum Thickness

The maximum thickness of plates is limited only by the capacity of the chemical composition and heat treatment to meet the specified mechanical property requirements; however, current practice normally limits the maximum thickness to 4 in. [100 mm] for each grade.

Delivery Condition

ASTM A737 grade C in the as-rolled condition is sensitive to cracking during flame cutting, transit, and handling, particularly in thicknesses over 2 in. [50 mm]. Plates should not be shipped in the as-rolled condition only except by mutual agreement between the manufacturer and the purchaser.

Referred Documents

ASTM Standards

A20/A20M General Requirements of steel plates for pressure vessels.

A435/A435M For straight-beam Ultrasonic Examination of steel plates.

A577/A577M For UT of angel-beam of steel plate.

A578/A578M For straight-beam UT examination of rolled steel plates for special applications.

General Requirements and Ordering Information

Material supplied to this specification shall conform to the requirements of Specification A20/A20M. These requirements outlines the testing and retesting methods and procedures, permitted variations in dimensions and mass, quality, repair of defects, marking, loading, and ordering information.

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