ASTM International - ASTM A543/A543M-93(1999)
Standard Specification for Pressure Vessel Plates, Alloy Steel, Quenched and Tempered Nickel-Chromium-Molybdenum
|Publication Date:||10 September 1999|
|ICS Code (Steels for pressure purposes):||77.140.30|
1.1 This specification covers nickel-chromium-moly
1.2 Material under this specification is available in two types, B and C. The material is also available in three classes as follows:
Minimum Tensile Strength, Class ksi [MPa] 1 105  2 115  3 90 
1.3 The maximum thickness of plates is limited only by the capacity of the chemical composition to meet the specified mechanical property requirements.
1.4 The minimum plate thickness is 3/16 in. [5 mm].
1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.