Masteel UK supplies high-quality steel worldwide for the oil, gas, and petrochemical sectors. We offer a wide range of steel grades and classes. This blog will specifically look at two chromium molybdenum steel specifications. These grades are ASTM A387 Grade 11 Class 2 and ASME SA387 Grade 11 Class 2.
What is the Difference Between ASTM and ASME?
Before outlining these specifications, it helps to understand the difference between the two bodies. ASME stands for the American Society of Mechanical Engineers. ASTM stands for the American Society for Testing and Materials. Although different organisations publish these standards, they are equivalent and cover the same specifications.
What Does ASTM A387 Grade 11 Class 2 and ASME SA387 Grade 11 Class 2 Cover?
These specifications define chrome moly alloy steel plates. Engineers use them in pressure vessels and welded boilers operating at high temperatures.
They also suit applications such as heat exchangers and pipework. This grade contains 1.25% chromium and 0.50% molybdenum. The chromium improves oxidation and corrosion resistance.The class defines the required tensile strength. ASTM A387 Grade 11 Class 2 and ASME SA387 Grade 11 Class 2 require a tensile strength of 75–100 ksi (515–690 MPa). They also require 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.
This material from Masteel
Masteel stocks a wide range of steel plates that are ASTM A387 Grade 11 Class 2 and ASME SA387 Grade 11 Class 2 certified.
All plates are pre-tested to rigorous standards, and we can arrange third party testing if more specific testing is required.
Our steel plates are sources from steel mills in Western Europe and we are able to ship our products worldwide.