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Specified Minimum Yield Strength (SMYS) means the specified minimum yield strength for steel pipe manufactured in accordance with a listed specification 1. This is a common term used in the oil and gas industry for steel pipe used under the jurisdiction of the United States Department of Transportation .
Barlow's formula (called "Kesselformel" [1] in German) relates the internal pressure that a pipe [2] can withstand to its dimensions and the strength of its material. This approximate formula is named after Peter Barlow, an English mathematician. [3] = Cylinder, where
[3] 0.2% proof and ultimate tensile strength of the Fe–55Mn–3Al–3Si wt% TWIP steel as a function of the test temperature; strain rate ε=10 −4.s −1. [ 3 ] Austenitic steels are used widely in many applications because of their excellent strength and ductility combined with good wear and corrosion resistance.
The object is to determine the critical stresses in each part, and compare them to the strength of the material (see strength of materials). For parts that have broken in service, a forensic engineering or failure analysis is performed to identify weakness, where broken parts are analysed for the cause or causes of failure. The method seeks to ...
The ultimate tensile strength of a material is an intensive property; therefore its value does not depend on the size of the test specimen.However, depending on the material, it may be dependent on other factors, such as the preparation of the specimen, the presence or otherwise of surface defects, and the temperature of the test environment and material.
Strength depends upon material properties. The strength of a material depends on its capacity to withstand axial stress, shear stress, bending, and torsion.The strength of a material is measured in force per unit area (newtons per square millimetre or N/mm², or the equivalent megapascals or MPa in the SI system and often pounds per square inch psi in the United States Customary Units system).
ASTM A500 defines four grades of carbon steel based primarily on material strength. [ 1 ] This is a standard set by the standards organization ASTM International , a voluntary standards development organization that sets technical standards for materials, products, systems, and services.
Indentation hardness correlates roughly linearly with tensile strength for most steels, but measurements on one material cannot be used as a scale to measure strengths on another. [17] Hardness testing can therefore be an economical substitute for tensile testing, as well as providing local variations in yield strength due to, e.g., welding or ...