Q420KZB - GB /T 34560.6-2017 - H2ABC

中文版

Grade	Q420KZB
Corresponding Standard	GB /T 34560.6-2017 Structural Steels - Part 6: Technical Delivery Conditions for Seismic-Improved Structural Steels for Building
Classification	Alloy Steel

Q420KZB Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	More
Minimum Value	-	-	-	-	-	-	-	-	-	Nb+V+Ti ≤ 0.22
Maximum Value	0.2	0.55	1.7	0.025	0.015	0.8	1	0.3	0.5	Nb+V+Ti ≤ 0.22

Q420KZB Mechanical Properties

Nominal thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Reduction of Area ψ %	Impact Energy Absorption KV2 J
6≤t≤16	530~680	ReH: ≥420	20	≥47（冲击温度 20℃）
16＜t≤50	530~680	ReH: 420~550	20	≥47（冲击温度 20℃）
50＜t≤100	530~680	ReH: 410~540	20	≥47（冲击温度 20℃）
100＜t≤150	510~660	ReH: 400~530	20	≥47（冲击温度 20℃）

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