Q420NE - GB /T 1591-2018

Grade	Q420NE
Corresponding Standard	GB /T 1591-2018 High Strength Low Alloy Structural Steels
Classification	Alloy Steel

Q420NE Chemical Element Composition Content (%)

Component	C	Si	Mn	P ^②	S ^②	Cr	Ni	Cu	Mo	N	Ti ^③	V	Nb	Al ^④
Minimum Value	-	-	1	-	-	-	-	-	-	-	0.006	0.01	0.01	0.015
Maximum Value	0.2	0.6	1.7	0.025	0.02	0.3	0.8	0.4	0.1	0.025	0.05	0.2	0.05	-

Q420NE Mechanical Properties

thickness or diameter d mm	Test Temperature	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
d≤16	Room Temperature	520~680	ReH: ≥420	≥19
16<d≤40		520~680	ReH: ≥400	≥19
40<d≤63		520~680	ReH: ≥390	≥19
63<d≤80		520~680	ReH: ≥370	≥18
80<d≤100		520~680	ReH: ≥360	≥18
100<d≤150		500~650	ReH: ≥340	≥18
150<d≤200		500~650	ReH: ≥330	≥18
200<d≤250		500~650	ReH: ≥320	≥18
specimen	20°C				long. ≥63 tr. ≥40
specimen	0°C				long. ≥55 tr. ≥34
specimen	-20°C				long. ≥47 tr. ≥27
specimen	-40°C				long. ≥31 tr. ≥20
specimen	-50°C				long. ≥27* tr. ≥16*

New and Old Grade Replacement List

Approximate Comparison Table High strength low alloy structural steels

China	International Organization for Standardization	European Standard
GB	ISO	EN
Q420NE GB/T 1591-2018	S420NE ISO 630-3-2012	S420NL EN 10025-3-2004

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