Sandvik 353 MA

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Description

Sandvik 353 MA is an austenitic chromium-nickel steel alloyed with nitrogen and rare earth metals. The grade is characterized by:


  • High creep strength
  • Very good resistance to isothermal and cyclic oxidation
  • Very good resistance to combustion gases
  • Very good resistance to carburization
  • Good resistance to nitriding gases
  • Good structural stability at high temperatures
  • Good weldability
  • Maximum operating temperature is approx. 1175°C (2150°F)

  • 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:

    Sandvik 353 MA


    Datasheet updated 2019-08-22 07:39 (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.

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    Eigenschaften

    Allgemein

    PropertyTemperatureValueComment

    Dichte

    23.0 °C

    7.9 g/cm³

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    Recycled Content

    82.1 %

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    Average recycled content

    Mechanisch

    PropertyTemperatureValueComment

    Creep strength 10^4 cycles

    550.0 °C

    206 MPa

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    at 10000h, average values

    600.0 °C

    127 MPa

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    at 10000h, average values

    650.0 °C

    82 MPa

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    at 10000h, average values

    700.0 °C

    56 MPa

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    at 10000h, average values

    750.0 °C

    39 MPa

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    at 10000h, average values

    800.0 °C

    28 MPa

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    at 10000h, average values

    850.0 °C

    20 MPa

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    at 10000h, average values

    900.0 °C

    15 MPa

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    at 10000h, average values

    950.0 °C

    11 MPa

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    at 10000h, average values

    1000.0 °C

    8 MPa

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    at 10000h, average values

    1050.0 °C

    6 MPa

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    at 10000h, average values

    1100.0 °C

    4.5 MPa

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    at 10000h, average values

    Creep strength 10^5 cycles

    550.0 °C

    129 MPa

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    at 100000h, average values

    600.0 °C

    80 MPa

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    at 100000h, average values

    650.0 °C

    52 MPa

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    at 100000h, average values

    700.0 °C

    36 MPa

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    at 100000h, average values

    750.0 °C

    25 MPa

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    at 100000h, average values

    800.0 °C

    18 MPa

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    at 100000h, average values

    850.0 °C

    14 MPa

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    at 100000h, average values

    900.0 °C

    10 MPa

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    at 100000h, average values

    950.0 °C

    6.7 MPa

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    at 100000h, average values

    1000.0 °C

    44.8 MPa

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    at 100000h, average values

    1050.0 °C

    3.5 MPa

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    at 100000h, average values

    1100.0 °C

    2.9 MPa

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    at 100000h, average values

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    Dehnung

    23.0 °C

    40 %

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    min.

    Elastizitätsmodul

    20.0 °C

    190 GPa

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    200.0 °C

    180 GPa

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    400.0 °C

    165 GPa

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    600.0 °C

    155 GPa

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    700.0 °C

    150 GPa

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    800.0 °C

    140 GPa

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    900.0 °C

    135 GPa

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    1000.0 °C

    130 GPa

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    1100.0 °C

    125 GPa

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    Härte, Vickers

    23.0 °C

    160 [-]

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    Streckgrenze Rp 0,2

    20.0 °C

    300 MPa

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    min.

    100.0 °C

    228 MPa

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    min.

    200.0 °C

    195 MPa

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    min.

    300.0 °C

    166 MPa

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    min.

    400.0 °C

    152 MPa

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    min.

    500.0 °C

    143 MPa

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    min.

    600.0 °C

    138 MPa

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    min.

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    Streckgrenze Rp0,1

    20.0 °C

    340 MPa

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    min.

    100.0 °C

    261 MPa

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    min.

    200.0 °C

    223 MPa

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    min.

    300.0 °C

    190 MPa

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    min.

    400.0 °C

    173 MPa

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    min.

    500.0 °C

    163 MPa

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    min.

    600.0 °C

    159 MPa

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    min.

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    Verlängerung A2

    23.0 °C

    35 %

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    min.

    Zugfestigkeit

    23.0 °C

    650 MPa

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    min.

    Thermisch

    PropertyTemperatureValueComment

    Koeffizient der thermischen Ausdehnung

    100.0 °C

    1.55E-5 1/K

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    for 20°C to the mentioned temperature

    200.0 °C

    1.55E-5 1/K

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    for 20°C to the mentioned temperature

    400.0 °C

    1.65E-5 1/K

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    for 20°C to the mentioned temperature

    600.0 °C

    1.7E-5 1/K

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    for 20°C to the mentioned temperature

    700.0 °C

    1.7E-5 1/K

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    for 20°C to the mentioned temperature

    800.0 °C

    1.75E-5 1/K

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    for 20°C to the mentioned temperature

    900.0 °C

    1.8E-5 1/K

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    for 20°C to the mentioned temperature

    1000.0 °C

    1.8E-5 1/K

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    for 20°C to the mentioned temperature

    1100.0 °C

    1.85E-5 1/K

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    Max. Betriebstemperatur

    1175 °C

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    Spezifische Wärmekapazität

    20.0 °C

    480 J/(kg·K)

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    100.0 °C

    500 J/(kg·K)

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    200.0 °C

    530 J/(kg·K)

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    300.0 °C

    555 J/(kg·K)

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    400.0 °C

    575 J/(kg·K)

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    500.0 °C

    590 J/(kg·K)

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    600.0 °C

    610 J/(kg·K)

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    700.0 °C

    625 J/(kg·K)

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    800.0 °C

    640 J/(kg·K)

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    900.0 °C

    655 J/(kg·K)

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    1000.0 °C

    665 J/(kg·K)

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    1100.0 °C

    680 J/(kg·K)

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    Wärmeleitfähigkeit

    20.0 °C

    11 W/(m·K)

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    100.0 °C

    13 W/(m·K)

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    200.0 °C

    15 W/(m·K)

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    300.0 °C

    17 W/(m·K)

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    400.0 °C

    18 W/(m·K)

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    500.0 °C

    20 W/(m·K)

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    600.0 °C

    22 W/(m·K)

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    700.0 °C

    23 W/(m·K)

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    800.0 °C

    25 W/(m·K)

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    900.0 °C

    26 W/(m·K)

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    1000.0 °C

    27 W/(m·K)

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    1100.0 °C

    29 W/(m·K)

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    Elektrisch

    PropertyTemperatureValue

    spezifischer Widerstand

    20.0 °C

    1E-6 Ω·m

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    200.0 °C

    1.07E-6 Ω·m

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    400.0 °C

    1.14E-6 Ω·m

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    600.0 °C

    1.2E-6 Ω·m

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    700.0 °C

    1.22E-6 Ω·m

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    800.0 °C

    1.25E-6 Ω·m

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    900.0 °C

    1.28E-6 Ω·m

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    1000.0 °C

    1.3E-6 Ω·m

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    1100.0 °C

    1.32E-6 Ω·m

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    Chemical properties

    PropertyValueComment

    Cerium

    0.05 %

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    The quantity of other rare earth metals should be added to cerium, because the addition takes the form of misch metal containing about 50 % Ce.

    Chrom

    25 %

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    Eisen

    Balance

    Kohlenstoff

    0.07 %

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    Mangan

    1.5 %

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    Nickel

    35 %

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    Phosphor

    0.04 %

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    max.

    Schwefel

    0.015 %

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    max.

    Silizium

    1.6 %

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    Stickstoff

    0.16 %

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    Technological properties

    Property
    Application areas

    The excellent oxidation and carburization resistance of Sandvik 353 MA in constantly carburizing gas, makes it particularly suitable grade for high-temperature petrochemical furnaces. The high nitriding resistance is very beneficial for service in high temperature cracked ammonia gas. Typical applications are:


  • Ethylene furnace, radiant cracking tubes
  • EDC furnace tubes
  • Tubes in wast heat recovery systems in the metallurgical industry, e.g. recuperators
  • Tubes in heat treatment furnaces, e.g. muffle tubes, radiant tubes, thermocouple protection tubes, burner components, furnace rollers
  • Recuperator tubes in chemical waste and sewage sludge incineration
  • *353 MA is a trademark owned by Outokumpu OY.

    Cold Forming

    Due to its higher strength compared with conventional stainless steels, higher deformation forces are required for cold bending of Sandvik 353 MA.

    Corrosion properties

    Oxidation: Owing to the high silicon content and the addition of rare earth metals (REM), Sandvik 353 MA has very high resistance to oxidation. The REM addition also contributes to improved scale adhesion during temperature cycling. Figure 1, which shows the measured weight increase after 45 h cyclic oxidation at different temperatures, illustrates how Sandvik 353 MA compares with some other high temperature grades. Weight increase after longer exposure at 1150°C (2100°F) is shown in Figure 2. The weight increase shown in Figure 1 and Figure 2 includes the weight of any spalled oxide.


    Carburizing and nitrogen pick-up: Corrosion attack by carburization or nitrogen pick-up usually follows a parabolic rate law: x2=kp * t+C, where x is the attack, expressed as penetration depth or weight increase, kp a rate constant, t exposure time and C a constant accounting for the initial attack (which follows a different rate law).

    Due to its ability to form a dense chromium oxide and its high nickel content, Sandvik 353 MA also has good resistance to carburization and nitrogen pick-up. Figure 3 shows the measured rate constants for carburization tests of various alloys at different temperatures. Cyclically carburizing-oxidizing conditions are often more detrimental, but, as Figure 4 shows, Sandvik 353 MA is able to resist these conditions better than other alloys. In nitrogen pick-up tests, Figure 5, Sandvik 353 MA showed similar resistance to Alloy 601.


    Sulphur attack: Alloys with high nickel content are generally sensitive to attack by sulphur at higher temperatures. However, under oxidizing conditions a protective oxide will be able to form, contributing to an improved resistance to sulphur attack. This is illustrated in Figure 6, which shows the rate constant for different alloys in different sulphidizing-oxidizing conditions. Again, the dense oxide formed on Sandvik 353 MA is shown to be advantageous.

    Heat Treatment

    Tubes are delivered in the heat treated condition. If another heat treatment is needed after further processing, the following is recommended:

    Stress relieving: 1000–1100°C (1830–2010°F), 10–15 minutes, cooling in air.

    Solution annealing: 1100–1200°C (2010–2190°F), 5–20 minutes, rapid cooling in air or water.

    Annealing after cold bending is not normally necessary, but this decision should be made taking account of the degree of bending and the service conditions.

    Other

    Forms of supply:

    Seamless tube and pipe in Sandvik 353 MA is supplied in dimensions up to 200 mm (7.9 in.) outside diameter in the solution-annealed and white pickled condition, or solution annealed by a bright-annealing process.


    Other forms of supply:

  • Bar steel
  • Welding

    The weldability of Sandvik 353 MA 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.


    In common with all fully austenitic stainless steels, Sandvik 353 MA has low thermal conductivity and high thermal expansion. Welding plans should therefore be carefully selected in advance, so that distortions of the welded joint are minimized. If residual stresses are a concern, solution annealing can be performed after welding.


    For Sandvik 353 MA, heat-input of <1.0 kJ/mm and interpass temperature of <100°C (210°F) are recommended.


    Recommended filler metals:

    • TIG/GTAW or MIG/GMAW welding
      • ISO 18274 S Ni 6082/AWS A5.14 ERNiCr-3 (e.g. Exaton Ni72HP)
    • MMA/SMAW welding
      • ISO 14172 E Ni 6182/AWS A5.11 ENiCrFe-3 (e.g. Exaton Ni71)