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

Ashby charts

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Properties

General

Density

ρ

7.8 g/cm³ at 20 °C

Dimension

Diameter

d

25.4 - 140 mm

Mechanical

Charpy impact energy, V-notch

aK,charpy,V-notch

230 J at 20 °C

Elastic modulus

E

220 GPa at 20 °C

Elongation

A

35 - 40 % at 20 °C

Hardness, Brinell

HB

201 - 293 [-] at 20 °C

Poisson's ratio

ν

0.3 [-] at 20 °C

Typical for Austenitic Stainless Steel

Shear modulus

G

77 GPa at 20 °C

Typical for Austenitic Stainless Steel

Tensile strength

Rm

655 - 790 MPa at 20 °C

Yield strength

YS

440 MPa at 20 °C

Yield strength Rp0.2

Rp0.2

345 - 420 MPa at 20 °C

Thermal

Coefficient of thermal expansion

α

1.6E-5 1/K at 20 °C

Melting point

Tm

1375 - 1450 °C

Typical for Austenitic Stainless Steel

Specific heat capacity

cp

480 J/(kg·K) at 20 °C

Thermal conductivity

λ

13 W/(m·K) at 20 °C

Electrical

Electrical conductivity

σel

1.22E+8 S/m at 20 °C

Electrical resistivity

ρel

8.5E-7 Ω·m at 20 °C

Typical for Austenitic Stainless Steel

Chemical properties

Element

Weight %

Comment

Fe

52.1 - 62.1 %

Balance

Cr

20.5 - 23.5 %

Ni

11.5 - 13.5 %

Mn

4 - 6 %

Mo

1.5 - 3 %

More

Technological properties

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.

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

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.