09MnNiDR - GB /T 713.3-2023

Grade	09MnNiDR
Corresponding Standard	GB /T 713.3-2023 Steel Plate, Sheet and Strip for Pressure Equipments— Part 3: Low Alloy Steel with Specified Low Temperature Properties
Classification	Alloy Steel

09MnNiDR Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Ni	Mo	N	Nb	Al
Minimum Value	-	0.15	1.2	-	-	0.3	-	-	-	0.02
Maximum Value	0.12	0.5	1.6	0.015	0.005	0.8	0.08	0.012	0.04	-

• When acid-soluble aluminium (Als) is used instead of Alt, the Als content should be no less than 0.015%. When the Nb+V+Ti content in steel is ≥0.015%, the Al content is not required.

09MnNiDR Mechanical Properties

thickness t mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
6≤t≤16	Normalizing or normalizing + tempering	440~570	ReL ≥300	≥23	-70°C ≥60
16＜t≤36	Normalizing or normalizing + tempering	430~560	ReL ≥280	≥23	-70°C ≥60
36＜t≤60	Normalizing or normalizing + tempering	430~560	ReL ≥270	≥23	-70°C ≥60
60＜t≤80	Normalizing or normalizing + tempering	420~550	ReL ≥260	≥23	-70°C ≥60
80＜t≤120	Normalizing or normalizing + tempering	420~550	ReL ≥260	≥23	-60°C ≥60

• When the yield phenomenon is not obvious, the specified plastic extension strength Rp0.2 is adopted.

Approximate Comparison Table Pressure-Bearing Flat Steel

China	European Standard
GB	EN
09MnNiDR GB/T 713.3-2023	11MnNi5-3 EN 10028-4-2017

09MnNiDR Corresponding Standards(Same grade name, different standards)

1	GB 3531-2014
	09MnNiDR L28093 09MnNiD
2	GB /T 713.3-2023
	09MnNiDR

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