P355GH - ISO 9328-2-2018

Grade	P355GH
Corresponding Standard	ISO 9328-2-2018 Steel flat products for pressure purposes - Non-alloy and alloy steels with specified elevated temperature properties
Classification	Alloy Steel

P355GH Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	Ti	V	Nb	Al	More
Minimum Value	0.1	-	1.1	-	-	-	-	-	-	-	-	-	-	-	Cr+C+Mo+Ni≤0.70；Al：N ≥ 2
Maximum Value	0.22	0.6	1.7	0.025	0.01	0.3	0.3	0.3	0.08	0.012	0.03	0.02	0.04	0.02	Cr+C+Mo+Ni≤0.70；Al：N ≥ 2

P355GH Mechanical Properties

	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
t≤16	Normalizing	510~650	≥355	≥20	（-20℃） ≥27
16＜t≤40	Normalizing	510~650	≥345	≥20	≥27
40＜t≤60	Normalizing	510~650	≥335	≥20	≥27
60＜t≤100	Normalizing	490~630	≥315	≥20	≥27
100＜t≤150	Normalizing	480~630	≥295	≥20	≥27
150＜t≤250	Normalizing	470~630	≥280	≥20	≥27

1 Approximate Comparison Table

China	Japan	United States	International Organization for Standardization	European Standard		Russia
GB	JIS	ASTM	ISO	EN	Numerical Grade	GOST
Q345R GB/T 713-2008	SEV345 JIS G3124:2004	Grade B ASTM A737/A737M-1999	P355GH ISO 9328-2004	P355GH EN 10028-2-2003	1.0473	17Г1С GOST 5520-1979

2 Approximate Comparison Table

China	United States	International Organization for Standardization	European Standard
GB	ASTM	ISO	EN
Q345R GB/T 713.2-2023	SA516 Gr.70 ASME Ⅱ-2-2021	P355GH P355NH ISO 9328-2018	P355GH P355NH EN 10028-2017

P355GH Corresponding Standards(Same grade name, different standards)

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