I urgently need to know what material the following grades are made of; please help, experts.
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1. SA-182F11CL.2 2. SA-336F11CL3 Please help, experts!
ASTM A182 / SA-182: Forged or rolled alloy steel pipe flanges, forged fittings, valves, and parts for high-temperature services. ASTM A182 / SA-336: Specifications for alloy steel forgings used in pressure and high-temperature applications. F11Cl.3: Materials for F11, Category 3
What material in our country is equivalent to it?
ASME SA-182/SA-182M: Nominal pipe flanges made of forged or rolled alloy steel for high-temperature applications, as well as forged pipe fittings, valves, and components. ASME SA182 F11 Class 2 UNS K11572 – Cr-Mo alloys, chromium molybdenum alloys. ASME SA182 is a standard designation issued by the American Society of Mechanical Engineers; for SA-182-F11 CL2, the chemical composition (%) is as follows: Cr: 1.00–1.5, Mo: 0.44–0.65, C: 0.10–0.20, Si: 0.50–1.00, Mn: 0.30–0.80, P: 0.040, S: 0.040. This is a common type of heat-resistant low-alloy steel forging in the United States, with a composition of approximately 1.25Cr0.5Mo. Equivalent to 15CrMo in our country
SA336 is a standard; ASME SA336GR.F11 CL.3 refers to the material, where GR denotes grade, F11 is the alloy designation, and CL.3 indicates the forging grade. For more details, see Baidu Wenku: http://wenku.baidu.com/view/a080f16cb84ae45c3b358c9f.html
SA336 F11 CL3 is a forged material, and it belongs to the 1.25Cr-0.5Mo series. The domestically produced 15CrMo belongs to the 0.5Cr series of hydrogen-resistant forgings
Its composition and properties are equivalent to those of 14Cr1Mo as specified in the national standard NB47008-2010; whether it can be used as a substitute still requires evaluation. Pang Long from Wuyi Iron and Steel: 13137747779
Here is my personal understanding: 1. SA-182F11CL.2 F11, Class 2; UNS number: K11572; grade: 1.25%Cr, 0.5%Mo – roughly corresponds to 14Cr1Mo forgings. 2. SA-336F11CL3 F11, Class 3; UNS number: K11597; grade: 2.25%Cr, 1.0%Mo – roughly corresponds to 12Cr2Mo1 forgings
Based on this material, it is estimated to be used on pressure pipelines; if switching to another standard, a material change form would need to be designed