Because there are both alloy steel vessel plates and alloy steel grades under EN10028-3 steel standard. Many are confused and do not know material P460NL1 is low alloy steel or alloy steel?
BBN steel is professional China steel plates supplier and can help you to tell steel grades and steel material application easily.
According to EN10028-3 standard, P275NH steel, grade P275NL1, material P355N, p355nh grade, P355NL1 material are unalloy steel quality. Meanwhile, P460NH grade, material P460NL1, grade P460NL2 are alloy steel quality.
The alloy steel is made by adding a proper amount of alloy elements on the basis of carbon steel.The main alloy elements of alloy steel are silicon, manganese, chromium, nickel, molybdenum, tungsten, vanadium, titanium, niobium, zirconium, cobalt, aluminum, copper, boron, rare earth and so on. From EN10028-3 table 1 chemical composition, you can also find that alloy elements content of P460NH grade, material P460NL1, grade P460NL2 are obviously higher than that of P275NH steel, grade P275NL1, material P355N, P355NH grade, P355NL1 material.
So please remember EN10028-3 P460NL1 as alloy steel for pressure vessel use.
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