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AFNOR X1NiCrMoCu31-27-4, 1.4563, Alloy 28, UNS N08028 Details

X1NiCrMoCu31-27-4, 1.4563, Alloy 28, UNS N08028 Application:Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Austenitic steel designed to deal with sour gas, phosphoric, sulphuric and acetic acids, and vinyl chloride. It is used for heat exchangers, co

Category Type Grade Microstructure Designations
Grades Stainless Steels X1NiCrMoCu31-27-4, 1.4563, Alloy 28, UNS N08028 Austenite France - AFNOR , EN 10028-7 - Flat products made of steels for pressure purposes - Part 7: Stainless steels
EN 10088-1 - Stainless steels - Part 1: List of stainless steels
EN 10088-2 - Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes
EN 10088-3 - Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes
EN 10088-4 - Stainless steels - Part 4: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for construction purposes
EN 10088-5 - Stainless steels - Part 5: Technical delivery conditions for bars, rods, wire, sections and bright products of corrosion resisting steels for construction purposes
EN 10216-5 (2004) - Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 5: Stainless steel tubes
EN 10217-7 - Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7: Stainless steel tubes
EN 10250-4 - Open die steel forgings for general engineering purposes - Part 4: Stainless steels
EN 10253-3 - Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements
EN 10253-4 - Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements
EN 10272 - Stainless steel bars for pressure purposes
EN 10297-2 (2005) - Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel

Chemical composition(wt.%) of X1NiCrMoCu31-27-4, 1.4563, Alloy 28, UNS N08028 grade: EN 10028-7

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.020
Si - 0.70
Mn - 2.00
P - 0.030
S - 0.010
Cr 26.00 28.00
Mo 3.00 4.00
Ni 30.00 32.00
N - 0.11
Cu 0.70 1.50

Mechanical properties of grade X1NiCrMoCu31-27-4, 1.4563, Alloy 28, UNS N08028 EN 10028-7

Yield Strength,Rp 0.2(MPa)

Condition Min Max Similar Note
220
High temperature 50°C 209
High temperature 100°C 190
High temperature 150°C 175

Tensile Strength,Rm(MPa)

Condition Min Max Similar Note
Forgings 500 700
High temperature 50°C 485
High temperature 100°C 460
High temperature 150°C 445

Impact,Kv/Ku(J)

Condition Min Max Similar Note

Elongation,A(%)

Condition Min Max Similar Note
40

Reduction of area,(%)

Condition Min Max Similar Note

Hardness

Condition Type Min Max Similar Note
HB 230

Physical properties of grade X1NiCrMoCu31-27-4, 1.4563, Alloy 28, UNS N08028 EN 10028-7

Density Note
8.00 g/cm3
Specific heat capacity Note
0.45 kJ/(kg*K)
Thermal conductivity Note
12 W/(m*K)
Young's modulus E Note
195 GPa
Electrical resistivity Note
1 µΩ*m
Linear expansion coefficient Note
15.8 (10-6/K)

Related properties

Heat treatment and working - Forging: 1150-850 °C
Heat treatment and working - Rolling: 1150-850 °C
Heat treatment and working - Solutioning: 1050-1150 °C

Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel, Austenitic steel designed to deal with sour gas, phosphoric, sulphuric and acetic acids, and vinyl chloride. It is used for heat exchangers, coolers, tanks, pumps and pipelines in the chemical, cryogenic, paper, petrochemical and energy industries, for elements of mining platforms, and for aircraft structures, screws and valves.It has a better corrosion resistance than UNS N08904 / 904L / 1.4539.The steel is resistant to intergranular corrosion in the delivery condition. It also has an excellent resistance to stress corrosion cracking phenomena, particularly in case of hot chloride environments.The alloy belongs to the welding group ISO 8.2; Preheating is not necessary.

X1NiCrMoCu31-27-4, 1.4563, Alloy 28, UNS N08028 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
X1NiCrMoCu31-27-4, 1.4563, Alloy 28, UNS N08028 AFNOR France
Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Austenitic steel designed to deal with sour gas, phosphoric, sulphuric and acetic acids, and vinyl chloride. It is used for heat exchangers, co

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