Material – EN 1.4311

Standard Specification for Seemless Steel Tubes for Pressure Purposes

Group - Ferrous Stainless Steel Alloys

Sub Group - EN 1.4311 Seemless Steel Tubes for Pressure Purposes

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

Grade Belongs to the Industry - Steel

Chemical Composition
CarbonC %0.030 max.
SiliconSi %1.000 max.
ManganeseMn %2.000 max.
PhosphorusP %0.045 max.
SulphurS %0.015 max.
ChromiumCr %17.500 - 19.500
NickelNi %8.500 - 11.500
NitrogenN %0.120 - 0.220
IronFe %Balance
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Heat Treatment
Solution Annealing
Mechanical Properties
Tensile Strength in Mpa550 - 760
Yield Strength in Mpa270 min.
Elongation in %30 min.
Reduction of Area in %-
Hardness in HB230 max.
Impact in Joule60 J @ RT

Cross Reference Table

Material Standard Country Grade Belong to the Industry
1.4311 DIN Germany Tube
1.4311 EN European Union Steel
CrNi18/9-0.03C/N BS British Steel and Flat
X3CrNiN18-10 AFNOR NF France Steel and Tube
SUS 304 LN JIS Japan Steel, Plate, Sheet and Strip
X20CrNiN 18-10 UNI Italy Sheet, Plate, Strip and Bar
X2CrNiN18 10 KKW ONORM Australia Steel