ASTM A387 Grade 11 Class 1 is in the standard ASTMA-387/SA-387M .A387 Grade 11Class 1 is a kind of Cr-Mo-alloy steel plates material used to fabric high temperature pressure vessels.A387 have ten grades or levels. They are grade 2 , grade 12 , grade 11 , grade 22 , grade 22L , grade 21 , grade 21L , grade 5 , grade 9 , grade 91.(plate) ASTM A537 Class 1, 2 and 3 Steel Plates Specification a387 yield strength(steel) Tensile strength and yield strenght The material as represented by the tension-test specimens shall conform to the requirements shown in Table 2. For Class 2 and Class 3 plates with a nominal thickness of 3/4 in. [20 mm] and under, the 1 1/2-in. [40 mm] wide rectangular specimen may be used for the tension test, and the elongation may be a387 yield strength(plate) Designation Requirement Grade 91 A387 Grade 91 Tensile strength,ksi [MPA] 85 to 110 [585 to 760] Yield strength,min,ksi [MPa]/(0.2% of a387 yield strength 60  Elongation in 8 in. [200mm],min % Elongation in 2 in. [50mm],min,% 18 1 more rows a387 yield strengthApr 30 2021ASTM A387 Chrome Moly Pressure Vessel Steel Supplier a387 yield strength(steel) Was this helpful?
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