Material ‐ BS 10216 ‐ 5 EN X1NiCrMoCu25 ‐ 20 ‐ 5

Standard Specification for Seemless Steel Tubes for Pressure Purposes

Group - Ferrous Stainless Steel Alloys

Sub Group - BS 10216 ‐ 5 Seemless Steel Tubes for Pressure Purposes

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

Grade Belongs to the Industry - Tube

Chemical Composition
CarbonC %0.020 max.
SiliconSi %0.700 max.
ManganeseMn %2.000 max.
PhosphorusP %0.030 max.
SulphurS %0.010 max.
ChromiumCr %19.000 ‐ 21.000
NickelNi %24.000 ‐ 26.000
MolybdenumMo %4.000 ‐ 5.000
NitrogenN %0.150 max.
CopperCu %1.200 ‐ 2.000
IronFe %Balance
Heat Treatment
Solution Annealing
Mechanical Properties
Tensile Strength in Mpa520 ‐ 720
Yield Strength in Mpa230 min.
Elongation in %30 min.
Reduction of Area in %
Hardness in BHN
Impact in Joule60 min. @ ‐ 196 ̊ C

Cross Reference Table

Material Standard Country Grade Belong to the Industry
1.4539 BS British Steel, Bar and Rod
1.4539 DIN Germany Steel, Bar and Rod
X1NiCrMoCu25 ‐ 20 ‐ 5 UNI Italy Steel, Sheet, Plate and Strip
X1NiCrMoCu25 ‐ 20 ‐ 5 AFNOR NF France Steel
X1NiCrMoCu25 ‐ 20 ‐ 5 DIN Germany Steel, Bar and Rod