What Does ASTM A387 Grade 11 Class 2 and ASME SA387 Grade 11 Class 2 Cover?
These specifications cover chrome moly steel alloy plates that are used specifically for pressure vessels and welded boilers that operate under elevated temperatures. Other applications for steel plates that come under these specifications include heat exchangers and pipework.
This grade has a nominal chromium content of 1.25% and nominal molybdenum content of 0.50%, and the high levels of chromium provide the steel with outstanding oxidation and corrosion resistance.
The class denotes the tensile strength required by a steel plate to meet this specification. ASTM A387 Grade 11 Class 2 and ASME SA387 Grade 11 Class 2 require a tensile strength of 75 to 100 ksi (515 to 690 MPA) with a minimum yield strength of 43 ksi (310 MPA).
The maximum thickness of these steel plates is only limited by the capacity of the composition to meet the mechanical property specifications required.
All plates are pre-tested to rigorous standards, and we can arrange third party testing if more specific testing is required.