1.4563, Alloy 28, UNS N08028, Z2NCDU31-27 - stainless steel

1.4563, X1NiCrMoCu31-27-4, Alloy 28, UNS N08028 - special stainless steel / nickel alloy according to EN 10088-1, ISO 21457.

1.4563, X1NiCrMoCu31-27-4, Alloy 28, N08028 – description

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.

Physical and mechanical properties

1.4563 - general physical and mechanical properties:

• In ambient temperature:
  • Density: 8 g/cm³
  • Specific heat capacity: 0.45 kJ/(kg*K)
  • Thermal conductivity: 12 W/(m*K)
  • Young's modulus E: 195 GPa
  • Electrical resistivity: 1 µΩ*m
  • Linear expansion coefficient: 15.8 (10^-6/K)
• Testing temperature: 100°C:
  • Lin. exp. coeff.: 15.8 (10^-6/K)
  • Young's modulus E: 190 GPa
• Testing temperature: 200°C:
  • Lin. exp. coeff.: 16.1 (10^-6/K)
  • Young's modulus E: 182 GPa
• Testing temperature: 300°C:
  • Lin. exp. coeff.: 16.5 (10^-6/K)
  • Young's modulus E: 174 GPa
• Testing temperature: 400°C:
  • Lin. exp. coeff.: 16.9 (10^-6/K)
  • Young's modulus E: 166 GPa
• Testing temperature: 500°C:
  • Lin. exp. coeff.: 17.3 (10^-6/K)
  • Young's modulus E: 158 GPa

1.4563 alloy's mechanical properties in hot rolled and solution annealed condition (+AT):

• Forgings:
  • General parameters:
    • Yield strength Re: > 220 MPa
    • Tensile strength Rm: 500-700 MPa
    • Elongation A: > 40 %
    • Hardness HB: < 230
  • Longitudial test pieces:
    • Impact energy KV. 20°С: > 100 J
  • Transverse test pieces:
    • Impact energy KV. 20°С: > 60 J
    • Impact energy KV. -196°С: > 60 J
• High temperature test:
  • Testing temperature: 50°C:
    • Re: > 209 MPa
    • Rm: > 485 MPa
  • Testing temperature: 100°C:
    • Re: > 190 MPa
    • Rm: > 460 MPa
  • Testing temperature: 150°C:
    • Re: > 175 MPa
    • Rm: > 445 MPa
  • Testing temperature: 200°C:
    • Re: > 160 MPa
    • Rm: > 430 MPa
  • Testing temperature: 250°C:
    • Re: > 155 MPa
    • Rm: > 410 MPa
  • Testing temperature: 300°C:
    • Re: > 150 MPa
    • Rm: > 400 MPa
  • Testing temperature: 350°C:
    • Re: > 145 MPa
    • Rm: > 395 MPa
  • Testing temperature: 400°C:
    • Re: > 135 MPa
  • Testing temperature: 450°C:
    • Re: > 125 MPa
  • Testing temperature: 500°C:
    • Re: > 120 MPa
  • Testing temperature: 550°C:
    • Re: > 115 MPa

Mechanical properties of 1.4563 wires:

• Delivery condition +2D:
  • Diameter D: 0.05 - 0.10 mm
    • Rm: < 1100 MPa
    • A: > 20 %
  • Diameter D: 0.1 - 0.2 mm
    • Rm: < 1050 MPa
    • A: > 20 %
  • Diameter D: 0.2 - 0.5 mm
    • Rm: < 1000 MPa
    • A: > 30 %
  • Diameter D: 0.5 - 1.0 mm
    • Rm: < 950 MPa
    • A: > 30 %
  • Diameter D: 1 - 3 mm
    • Rm: < 900 MPa
    • A: > 30 %
  • Diameter D: 3 - 5 mm
    • Rm: < 850 MPa
    • A: > 35 %
  • Diameter D: > 5 mm
    • Rm: < 800 MPa
    • A: > 35 %
• In strain hardened delivery condition +2H, with diameter > 0.05mm:
  • cond. +C500 - Rm: 500-700 MPa
  • cond. +C600 - Rm: 600-800 MPa
  • cond. +C700 - Rm: 700-900 MPa
  • cond. +C800 - Rm: 800-1000 MPa
  • cond. +C900 - Rm: 900-1100 MPa
  • cond. +C1000 - Rm: 1000-1250 MPa
  • cond. +C1100 - Rm: 1100-1350 MPa
  • cond. +C1200 - Rm: 1200-1450 MPa
  • cond. +C1400 - Rm: 1400-1700 MPa
  • cond. +C1600 - Rm: 1600-1900 MPa
  • cond. +C1800 - Rm: 1800-2100 MPa

Heat treatment and working

Recommended working and heat treatment parameters for X1NiCrMoCu31-27-4 alloy:

• Forging: 1150-850 °C
• Rolling: 1150-850 °C
• Solutioning: 1050-1150 °C

We deliver this steel alloy as:

• Rods
• Sheets
• Strips
• Sections

Replacements, equivalents and other designations:

1.4563, 02Ch27N31M4, 02Х27Н31М4, Z2NCDu31-27, Nicrofer 3127LC, Alloy 28, UNS N08028, A31MKN, CHROMINO 1.4563, Marker G4563M, NIROSTA 4563, Puro 1.4563, T901K, VLX928, A958, BGH 4563, Maresist 28, Marker Irrubigo 4563, Nicrofer 3127LC, REMANIT 4563, TECRONIMO 28-31-4