P280GH in European standard EN 10222-2017 "pressure steel forgings - part 2: have a certain high temperature performance of ferrite and martensite steel", its composition and performance in JB 4726-2000 the pressure vessel [TJC STEEL]with carbon steel and low alloy steel forgings of 16 mn is similar, also with our country GB - 2009-24512.1 the nuclear power plant in seamless steel tube part 1: carbon steel seamless steel tube, HD280, HD280Cr of similar.
Component Specification(EN 10222-2-2017)(similarly hereinafter) C 0.08~0.20 Cr ≤0.30 Ti ≤0.03 Si ≤0.40 Cu ≤0.30 V ≤0.02 Mn 0.90~1.50 Mo ≤0.08 Cr+Cu+Mo+Ni ≤0.70 P ≤0.025 Nb ≤0.01 carbon equivalent ≤0.45 S ≤0.015 Ni ≤0.30 [TJC STEEL] Heat Treatment name code technology normalizing[TJC STEEL] N 880~920℃,air cooling Normal + tempering NT 880~920℃,air cooling、oil cooling、water-cooling 600~640℃,air cooling、furnace cooling Quenching + tempering QT Room-Temperature Mechanical Property SIZE tR≤35 35<tR≤160 yield strength ReH(MPa) ≥280 ≥255 strength of extension Rm(MPa) 460~580[TJC STEEL] percentage elongation after fracture A% l ≥23 tr/t ≥21 ballistic work J l ≥48 tr/t ≥27 Strong Non - Proportional Extension of Requirements for High Temperature Environments Rp0.2(MPa) SIZE tR≤50 50<tR≤160 T 100℃[TJC STEEL] ≥250 ≥210 150℃ ≥235 ≥200 200℃ ≥225 ≥195 250℃ ≥205 ≥185 300℃ ≥185 ≥170 350℃ ≥170 ≥155 400℃ ≥155 ≥135 Applications: P280GH is a kind of carbon steel with specified high temperature characteristics, and has good impact toughness and welding performance.Its use is similar to 16Mn, such as shell and tube heat exchanger carbon steel tube plate, flange, etc.The important use of P280GH is in the field of nuclear power, in the nuclear [TJC STEEL]power components are mainly used as steam generator main steam system, water supply control system, auxiliary water supply system of rolling pipe fittings or forged pipe fittings, or steam generator main steam system forging or die forging elbow. Comments are closed.
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