ASTM A276 Grade S20910 Annealed

Alternative and trade names
NITRONIC® 50, UNS S20910, XM-19
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Description

NITRONIC® 50 is manganese alloyed austenitic stainless steel with improved corrosion resistance compared to 316L and 317L due to increased chromium content plus about twice the yield strength of the same at room temperature. Unlike many austenitic alloys, NITRONIC® 50 does not become magnetic when cold formed. NITRONIC® 50 Stainless has very good mechanical properties at both elevated and sub-zero temperatures.

Related Standards

Equivalent Materials

This material data has been provided by MakeItFrom.com,Sverdrup Steel.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValue

Density

23.0 °C

7.8 g/cm³

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Dimension

PropertyValue

Diameter

25.4 - 140 mm

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Mechanical

PropertyTemperatureValueComment

Charpy impact energy, V-notch

23.0 °C

230 J

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Elastic modulus

23.0 °C

220 GPa

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Elongation

23.0 °C

35 - 40 %

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Hardness, Brinell

23.0 °C

201 - 293 [-]

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Poisson's ratio

23.0 °C

0.3 [-]

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Typical for Austenitic Stainless Steel

Shear modulus

23.0 °C

77 GPa

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Typical for Austenitic Stainless Steel

Tensile strength

23.0 °C

655 - 790 MPa

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Yield strength

23.0 °C

440 MPa

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Yield strength Rp0.2

23.0 °C

345 - 420 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

1.6E-5 1/K

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Melting point

1230 - 1480 °C

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Typical for Austenitic Stainless Steel

Specific heat capacity

23.0 °C

480 J/(kg·K)

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Thermal conductivity

23.0 °C

13 W/(m·K)

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Electrical

PropertyTemperatureValueComment

Electrical resistivity

23.0 °C

8.5E-7 Ω·m

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Typical for Austenitic Stainless Steel

Chemical properties

PropertyValueComment

Carbon

0 - 0.06 %

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Chromium

20.5 - 23.5 %

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Iron

52.1 - 62.1 %

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Balance

Manganese

4 - 6 %

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Molybdenum

1.5 - 3 %

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Nickel

11.5 - 13.5 %

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Niobium

0.1 - 0.3 %

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Nitrogen

0.2 - 0.4 %

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Phosphorus

0 - 0.04 %

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Silicon

0 - 1 %

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Sulfur

0 - 0.03 %

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Vanadium

0.1 - 0.3 %

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Technological properties

Property
Application areas

The combination of corrosion resistance and mechanical strength is utilized in marine hardware, pump shafting, petrochemical, pulp & Equipment for the Paper Industry, Paper Industry, food processing and petroleum industries. Can also be used in “down hole” applications due to sulfide stress cracking resistance. NITRONIC® 50 in both the annealed and high-strength (hot rolled) conditions has been included in NACE Standard MR01-75/ ISO 15156-3 “Sulfide Stress Cracking Resistant Metallic Material for Oil Field Equipment,” at hardness levels up to HRc 35 maximum.

Corrosion properties

Field service experience have shown that NITRONIC® 50 stainless has excellent resistance to sulfide stress cracking in air conditions.

Heat Treatment

Annealed, for most applications, the 1066°C condition should be selected, as it provides a higher level of mechanical properties along with excellent corrosion resistance. A high strength version can also be supplied with min. yield at 585MPa.