12 Ni 14 - ISO 9329-3-1997

Grade	12 Ni 14
Corresponding Standard	ISO 9329-3-1997 Unalloyed and Alloyed Steels with Specified Low Temperature Properties
Classification	Alloy Steel

12 Ni 14 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Ni	V
Minimum Value	-	0.15	0.3	-	-	3.25	-
Maximum Value	0.15	0.35	0.85	0.025	0.02	3.75	0.05

12 Ni 14 Mechanical Properties

wall 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
T≤40	Quenching + Tempering	440~590	ReH or Rp0.2 or Rp0.5 ≥245	16	l: ≥65 t: ≥45
/					T≤25 l: ≥60 t: ≥45 25＜T≤40 l: ≥55 t: ≥40
/					T≤25 l: ≥55 t: ≥40 25＜T≤40 l: ≥50 t: ≥35
/					T≤25 l: ≥55 t: ≥35 25＜T≤40 l: ≥50 t: ≥30
/					T≤25 l: ≥50 t: ≥35 25＜T≤40 l: ≥45 t: ≥30
/					T≤25 l: ≥45 t: ≥30 25＜T≤40 l: ≥40 t: ≥27
/					T≤25 l: ≥40 t: ≥27

1 Approximate Comparison Table Pressure-Bearing Flat Steel

International Organization for Standardization	European Standard
ISO	Numerical Grade
12Ni14	1.5637

2 Approximate Comparison Table Pressure-Bearing Flat Steel

China	Japan	United States	International Organization for Standardization	European Standard
GB	JIS	ASTM	ISO	EN
08Ni3DR GB/T 713.4-2023	SL3N255 SL3N275 SL3N440 JIS G 3127-2021	3.5%Ni D级 3.5%Ni E级 3.5%Ni F级 ASTM A203/A203M-17	12Ni14 ISO 9328-4-2018	12Ni14 EN 10028-4-2017

12Ni14 Corresponding Standards(Same grade name, different standards)

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