18MnMoNbR - GB /T 713.2-2023

Grade	18MnMoNbR
Corresponding Standard	GB /T 713.2-2023 Steel Plate, Sheet and Strip for Pressure Equipments - Part 2: Non-Alloy And Alloy Steel with Specified Temperature Properties
Classification	Alloy Steel

18MnMoNbR Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	Nb
Minimum Value	-	0.15	1.2	-	-	-	-	-	0.45	0.025
Maximum Value	0.21	0.5	1.6	0.02	0.01	0.3	0.3	0.3	0.65	0.05

18MnMoNbR Mechanical Properties

thickness t mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
30≤t≤60	Normalizing + Tempering	570~720	≥400	≥18	0°C ≥47
60＜t≤100	Normalizing + Tempering	570~720	≥390	≥18	0°C ≥47

Approximate Comparison Table Steel Plate for Boilers and Pressure Vessels

China	International Organization for Standardization	European Standard
GB	ISO	EN	Numerical Grade
18MnMoNbR	18MnMo4-5	18MnMo4-5	1.5414

18MnMoNbR Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!