Material – EN 1.7386+I

Standard Specification for Seemless Steel Tubes for Pressure Purposes

Group - Ferrous Stainless Steel Alloys

Sub Group - EN 1.7386+I Seemless Steel Tubes for Pressure Purposes

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

Grade Belongs to the Industry - Steel and Tube

Chemical Composition
CarbonC %0.080 - 0.150
SiliconSi %0.250 - 1.000
ManganeseMn %0.300 - 0.600
PhosphorusP %0.025 max.
SulphurS %0.010 max.
ChromiumCr %8.000 - 10.000
MolybdenumMo %0.900 - 1.100
AluminiumAl %0.040 max.
CopperCu %0.300 max.
IronFe %Balance
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Heat Treatment
Isothermal Annealing
Mechanical Properties
Tensile Strength in Mpa460 - 640
Yield Strength in Mpa210 min.
Elongation in %18 min.
Reduction of Area in %-
Hardness in BHN-
Impact in Joule27 J @ RT

Cross Reference Table

Material Standard Country Grade Belong to the Industry
1.7386+I EN European Union Steel and Tube
1.7386+I DIN Germany Steel and Tube
X11CrMo91TA ISO International Steel and Tube
X11CrMo91TN+TT ISO International Steel and Tube
X12CrMo9 1 DIN Germany Steel and Tube
17116 CSN Czech Republic Steel
X12Cr9KG UNI Italy Steel and Forging