Sanicro® 69

Want to keep this datasheet? Save it now in your required format

Description

Sanicro® 69 is an austenitic nickel-chromium-iron alloy used primarily for steam generators in nuclear power plants (PWR). For this application it is used in the 'thermally treated' condition. This treatment results in chromium carbide precipitation at the grain boundaries but no significant chromium depletion. The grade has good structure stability and good weldability.


For the steam generator application the material is characterized by:

  • Extremely high resistance against stress corrosion cracking in primary side PWR water conditions
  • Improved pitting corrosion resistance in chloride containing solutions compared with Alloy 600
  • Sanicro® 69 is also characterized by:

  • Good corrosion resistance in caustic environments
  • Excellent performance in nitric acid solutions

  • For steam generator applications Sanicro® 69 is delivered to the most stringent individual specifications in order to assure maximum reliable performance in nuclear power plants.


    More technical information and charts that are relevant to the materials corrosion, mechanical and physical performance are displayed in the figures on the right side of the material page.


    Datasheet URL:

    Sanicro® 69


    Datasheet updated 2020-05-07 13:07 (supersedes all previous editions)

    Related Standards

    Equivalent Materials

    Diese Materialdaten wurden von Sandvik Materials Technology zur Verfügung gestellt

    Alle Daten beziehen sich auf Raumtemperatur soweit nicht anderweitig spezifiziert. SI Einheiten werden verwendt soweit nicht anderweitig spezifiziert.
    Äquivalente Standards sind ähnlich zu einem oder mehreren Standards die der Anbieter angegeben hat. Manche äquivalente Standards können strikter sein oder außerhalb der Bedingungen des ursprünglichen Standards.

    Ashby charts

    See where falls on the material property chart for against in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.

    Eigenschaften

    Allgemein

    PropertyTemperatureValue

    Dichte

    23.0 °C

    8.12 g/cm³

    Show Supplier Material materials with Dichte of 8.12 g/cm³

    Mechanisch

    PropertyTemperatureValueComment

    Dehnung

    23.0 °C

    30 %

    Show Supplier Material materials with Dehnung of 30 %

    min.

    Elastizitätsmodul

    20.0 °C

    210 GPa

    Show Supplier Material materials with Elastizitätsmodul of 210 GPa

    100.0 °C

    206 GPa

    Show Supplier Material materials with Elastizitätsmodul of 206 GPa

    200.0 °C

    201 GPa

    Show Supplier Material materials with Elastizitätsmodul of 201 GPa

    300.0 °C

    195 GPa

    Show Supplier Material materials with Elastizitätsmodul of 195 GPa

    400.0 °C

    189 GPa

    Show Supplier Material materials with Elastizitätsmodul of 189 GPa

    500.0 °C

    182 GPa

    Show Supplier Material materials with Elastizitätsmodul of 182 GPa

    600.0 °C

    174 GPa

    Show Supplier Material materials with Elastizitätsmodul of 174 GPa

    Härte, Vickers

    23.0 °C

    160 [-]

    Show Supplier Material materials with Härte, Vickers of 160 [-]

    Streckgrenze Rp 0,2

    20.0 °C

    240 MPa

    Show Supplier Material materials with Streckgrenze Rp 0,2 of 240 MPa

    higher values for steam generator tubing in the thermally treated condition can be achieved (280 MPa at 20°C)

    100.0 °C

    220 MPa

    Show Supplier Material materials with Streckgrenze Rp 0,2 of 220 MPa

    higher values for steam generator tubing in the thermally treated condition can be achieved (280 MPa at 20°C)

    200.0 °C

    190 MPa

    Show Supplier Material materials with Streckgrenze Rp 0,2 of 190 MPa

    higher values for steam generator tubing in the thermally treated condition can be achieved (280 MPa at 20°C)

    300.0 °C

    187 MPa

    Show Supplier Material materials with Streckgrenze Rp 0,2 of 187 MPa

    higher values for steam generator tubing in the thermally treated condition can be achieved (280 MPa at 20°C)

    400.0 °C

    184 MPa

    Show Supplier Material materials with Streckgrenze Rp 0,2 of 184 MPa

    higher values for steam generator tubing in the thermally treated condition can be achieved (280 MPa at 20°C)

    500.0 °C

    180 MPa

    Show Supplier Material materials with Streckgrenze Rp 0,2 of 180 MPa

    higher values for steam generator tubing in the thermally treated condition can be achieved (280 MPa at 20°C)

    600.0 °C

    175 MPa

    Show Supplier Material materials with Streckgrenze Rp 0,2 of 175 MPa

    higher values for steam generator tubing in the thermally treated condition can be achieved (280 MPa at 20°C)

    700.0 °C

    150 MPa

    Show Supplier Material materials with Streckgrenze Rp 0,2 of 150 MPa

    higher values for steam generator tubing in the thermally treated condition can be achieved (280 MPa at 20°C)

    Unlock all property charts

    Zugfestigkeit

    20.0 °C

    585 MPa

    Show Supplier Material materials with Zugfestigkeit of 585 MPa

    min.

    100.0 °C

    550 MPa

    Show Supplier Material materials with Zugfestigkeit of 550 MPa

    min.

    200.0 °C

    510 MPa

    Show Supplier Material materials with Zugfestigkeit of 510 MPa

    min.

    300.0 °C

    495 MPa

    Show Supplier Material materials with Zugfestigkeit of 495 MPa

    min.

    400.0 °C

    490 MPa

    Show Supplier Material materials with Zugfestigkeit of 490 MPa

    min.

    500.0 °C

    480 MPa

    Show Supplier Material materials with Zugfestigkeit of 480 MPa

    min.

    600.0 °C

    440 MPa

    Show Supplier Material materials with Zugfestigkeit of 440 MPa

    min.

    700.0 °C

    340 MPa

    Show Supplier Material materials with Zugfestigkeit of 340 MPa

    min.

    Unlock all property charts

    Kerbschlagenergie

    Since Sanicro® 69 is a fully austenitic alloy it possesses good toughness down to -196°C (-320°F)

    Thermisch

    PropertyTemperatureValueComment

    Koeffizient der thermischen Ausdehnung

    100.0 °C

    1.35E-5 1/K

    Show Supplier Material materials with Koeffizient der thermischen Ausdehnung of 1.35E-5 1/K

    for 30°C to the mentioned temperature

    200.0 °C

    1.4E-5 1/K

    Show Supplier Material materials with Koeffizient der thermischen Ausdehnung of 1.4E-5 1/K

    for 30°C to the mentioned temperature

    300.0 °C

    1.45E-5 1/K

    Show Supplier Material materials with Koeffizient der thermischen Ausdehnung of 1.45E-5 1/K

    for 30°C to the mentioned temperature

    400.0 °C

    1.5E-5 1/K

    Show Supplier Material materials with Koeffizient der thermischen Ausdehnung of 1.5E-5 1/K

    for 30°C to the mentioned temperature

    500.0 °C

    1.55E-5 1/K

    Show Supplier Material materials with Koeffizient der thermischen Ausdehnung of 1.55E-5 1/K

    for 30°C to the mentioned temperature

    600.0 °C

    1.55E-5 1/K

    Show Supplier Material materials with Koeffizient der thermischen Ausdehnung of 1.55E-5 1/K

    for 30°C to the mentioned temperature

    Unlock all property charts

    Spezifische Wärmekapazität

    23.0 °C

    460 J/(kg·K)

    Show Supplier Material materials with Spezifische Wärmekapazität of 460 J/(kg·K)

    100.0 °C

    480 J/(kg·K)

    Show Supplier Material materials with Spezifische Wärmekapazität of 480 J/(kg·K)

    200.0 °C

    495 J/(kg·K)

    Show Supplier Material materials with Spezifische Wärmekapazität of 495 J/(kg·K)

    300.0 °C

    505 J/(kg·K)

    Show Supplier Material materials with Spezifische Wärmekapazität of 505 J/(kg·K)

    400.0 °C

    510 J/(kg·K)

    Show Supplier Material materials with Spezifische Wärmekapazität of 510 J/(kg·K)

    500.0 °C

    520 J/(kg·K)

    Show Supplier Material materials with Spezifische Wärmekapazität of 520 J/(kg·K)

    600.0 °C

    580 J/(kg·K)

    Show Supplier Material materials with Spezifische Wärmekapazität of 580 J/(kg·K)

    Unlock all property charts

    Wärmeleitfähigkeit

    23.0 °C

    11 W/(m·K)

    Show Supplier Material materials with Wärmeleitfähigkeit of 11 W/(m·K)

    100.0 °C

    13 W/(m·K)

    Show Supplier Material materials with Wärmeleitfähigkeit of 13 W/(m·K)

    200.0 °C

    14 W/(m·K)

    Show Supplier Material materials with Wärmeleitfähigkeit of 14 W/(m·K)

    300.0 °C

    16 W/(m·K)

    Show Supplier Material materials with Wärmeleitfähigkeit of 16 W/(m·K)

    400.0 °C

    18 W/(m·K)

    Show Supplier Material materials with Wärmeleitfähigkeit of 18 W/(m·K)

    500.0 °C

    19 W/(m·K)

    Show Supplier Material materials with Wärmeleitfähigkeit of 19 W/(m·K)

    600.0 °C

    23 W/(m·K)

    Show Supplier Material materials with Wärmeleitfähigkeit of 23 W/(m·K)

    Unlock all property charts

    Elektrisch

    PropertyTemperatureValue

    spezifischer Widerstand

    20.0 °C

    1.11E-6 Ω·m

    Show Supplier Material materials with spezifischer Widerstand of 1.11E-6 Ω·m

    100.0 °C

    1.14E-6 Ω·m

    Show Supplier Material materials with spezifischer Widerstand of 1.14E-6 Ω·m

    200.0 °C

    1.18E-6 Ω·m

    Show Supplier Material materials with spezifischer Widerstand of 1.18E-6 Ω·m

    300.0 °C

    1.22E-6 Ω·m

    Show Supplier Material materials with spezifischer Widerstand of 1.22E-6 Ω·m

    400.0 °C

    1.24E-6 Ω·m

    Show Supplier Material materials with spezifischer Widerstand of 1.24E-6 Ω·m

    Unlock all property charts

    Chemical properties

    PropertyValueComment

    Aluminium

    10 %

    Show Supplier Material materials with Aluminium of 10 %

    Chrom

    30 %

    Show Supplier Material materials with Chrom of 30 %

    Eisen

    Balance

    Kobalt

    0.05 %

    Show Supplier Material materials with Kobalt of 0.05 %

    Lower contents can be specified after agreement.

    Kohlenstoff

    0.02 %

    Show Supplier Material materials with Kohlenstoff of 0.02 %

    Mangan

    0.5 %

    Show Supplier Material materials with Mangan of 0.5 %

    max.

    Nickel

    60 %

    Show Supplier Material materials with Nickel of 60 %

    Phosphor

    0.02 %

    Show Supplier Material materials with Phosphor of 0.02 %

    max.

    Schwefel

    0.015 %

    Show Supplier Material materials with Schwefel of 0.015 %

    max.

    Silizium

    0.5 %

    Show Supplier Material materials with Silizium of 0.5 %

    max.

    Technological properties

    Property
    Application areas

    Sanicro® 69 is used in:

  • Steam generators in nuclear power plants.
  • Units in contact with nitric acid at elevated temperatures.
  • Equipment requiring high resistance to oxidation, carburization and nitriding.
  • Units exposed to caustic solutions at high temperature.
  • Certifications

    Approvals:

  • ASME Boiler and Pressure Vessel Code Case N-20 and N-474
  • AFCEN RCCM M4105
  • Cold Forming

    The excellent formability of Sanicro® 69 permits cold-bending to very small bending radii. Annealing is normally not necessary after cold-bending owing to the high stress corrosion cracking resistance for Sanicro® 69.

    Corrosion properties

    Stress corrosion cracking: The thermally treated condition of Sanicro® 69 is developed specifically to resist stress corrosion cracking in steam generator environment at nuclear power plants. This has been confirmed by laboratory stress corrosion cracking tests in pure water (less than 5 ppm oxygen, 4-5 ppm hydrogen added) at 365°C (690°F).

    No stress corrosion cracking was developed in Sanicro® 69 during the entire test period of 33 000 hours. Alloy 600 started to crack after 200 hours.


    Intergranular corrosion: Sanicro® 69 has good resistance to intergranular corrosion in both the thermally treated condition and the solution annealed condition. Typical corrosion rates in the Huey test (65% HNO₃, 5 x 48h, ASTM A262 Practice C) are 0.06 mm/year (2.4 mpy).

    The figure on the right side shows a TTS diagram for a heat of Sanicro® 69 with 0.03% carbon tested in the Huey test. The initial material was annealed at 1040°C (1900°F), 20 min/WQ. As can be seen there is a very narrow area where Sanicro® 69 shows some tendency for sensitization.


    General corrosion: Sanicro® 69 and Alloy C-276 have been corrosion tested in 20% HNO₃+ 4%HF at 65°C (150°F). Sanicro® 69 had a corrosion rate of 0.625 mm/year (24.6 mpy) while Alloy C-276 suffered a corrosion rate of 23.7 mm/year (933 mpy).

    Expanding

    Sanicro® 69 is expanded into tube sheets in the same way as standard austenitic stainless steels.

    Heat Treatment

    For steam generator application the tubes are delivered in the thermally treated conditions. This means exposure at about 720°C (1330°F) for normally 10 hours. Prior to the thermal treatment the tubes are solution annealed at approximately 1100 °C (2010°F) for some minutes.

    For other applications the tubes are delivered in the solution annealed condition. If additional solution annealing is necessary after further processing the following procedure is recommended:

    1050-1150°C (1920-2100°F), 1-10 minutes, rapid cooling in air or water.

    Other

    Forms of supply:

    Seamless tube and pipe are supplied in the size range from 1/4" O.D. (6.35 mm) to 4" O.D. (101.6 mm) in wall thickness from 0.030" (0.9 mm) to 1" (25.4 mm).


    Tube and pipe are delivered in the solution annealed and pickled condition.


    PWR steam generator tubes are delivered in the bright annealed and thermally treated condition. The thermal treatment involves a treatment in vacuum furnace at about 720°C (1330°F) for normally 10 hours.

    Welding

    The weldability of Sanicro® 69 is good. Suitable methods of fusion welding are manual metal-arc welding (MMA/SMAW) and gas-shielded arc welding, with the TIG/GTAW method as first choice.


    For Sanicro® 69, heat-input of <1.0 kJ/mm and interpass temperature of <100°C (210°F) are recommended. A string bead welding technique should be used.


    Recommended filler metals:

    • TIG/GTAW or MIG/GMAW welding
      • ISO 18274 S Ni 6052/AWS A5.14 ERNiCrFe-7 (e.g. Exaton Ni68HP)
    • MMA/SMAW welding
      • ISO 14172 E Ni 6152/AWS A5.11 ENiCrFe-7 (e.g. Exaton Ni69)


    Overlay welding:

  • ISO 18274 S Ni 6043/AWS A5.14 ERNiCrFe-14 (e.g. Exaton Ni69HPQ) strip electrode is recommended for overlay welding of tube sheets and high-pressure vessels in cases where corrosion resistance, equal to that of Sanicro® 69, is required.