NITRONIC® 50 Bar

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 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.

Ashby charts

Properties

Dimension

PropertyValue

Diameter

25.4 - 140 mm

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Mechanical

PropertyValueTemperature

Charpy impact energy, V-notch

230 J

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23.0 °C

Elongation

35 %

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23.0 °C

Hardness, Brinell

201 - 293 [-]

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23.0 °C

Tensile strength

655 - 730 MPa

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23.0 °C

Yield strength Rp0.2

345 - 420 MPa

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23.0 °C

Chemical properties

Property

Carbon

0.06 %

Chromium

20.5 - 23.5 %

Iron

Balance

Manganese

4 - 6 %

Molybdenum

1.5 - 3 %

Nickel

11.5 - 13.5 %

Niobium

0.1 - 0.3 %

Nitrogen

0.2 - 0.4 %

Phosphorus

0.04 %

Silicon

1 %

Sulfur

0.03 %

Vanadium

0.1 - 0.3 %

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.