Material – EN X 5 CrNiCuNb 16-4

Standard Specification for Open Die Steel Forgings for General Engineering Purposes

Group - Ferrous Stainless Steel Alloys

Sub Group - EN X 5 CrNiCuNb 16-4 Open Die Steel Forgings for General Engineering Purposes

Application - Intended for Valve, Pump, General Engineering, Automotive and Other Industries

Grade Belongs to the Industry - Forging

Chemical Composition
CarbonC %0.070 max.
SiliconSi %0.700 max.
ManganeseMn %1.500 max.
PhosphorusP %0.040 max.
SulphurS %0.030 max.
ChromiumCr %15.000 - 17.000
NickelNi %3.000 - 5.000
MolybdenumMo %0.600 max.
CopperCu %3.000 - 5.000
NiobiumNb %0.450 max.
IronFe %Balance
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Heat Treatment
Normalising or Annealing or Hardening + Tempering
Mechanical Properties
Tensile Strength in Mpa800 - 1275
Yield Strength in Mpa520 min.
Elongation in %3 min.
Reduction of Area in %-
Hardness in HB360 max.
Impact in Joule15 J @ RT

Cross Reference Table

Material Standard Country Grade Belong to the Industry
SA747 CB7Cu-1 ASME USA Casting
17-4PH SAE USA Steel
Z 7 CNU 17-04 AFNOR NF France Steel
5622 AMS USA Bar, Wire, Tube and Forging
X 5 CrNiCuNb 16-4 DIN Germany Steel
J92180 UNS USA Casting
A747 Grade CB7Cu-1(H900) ASTM USA Casting