Nitronic 50 Stainless Steel Supplier

Ram Alloys is a leading supplier of Nitronic 50 stainless steel in a variety of shapes including round bar, square bar, hex bar and mill flats. Nitronic 50 is an XM-19 (UNS S20910) stainless steel grade that offers superior strength and corrosion resistance when compared to the other common austenitic stainless steel grades. At room temperature, grade XM-19 displays double the yield strength of grades 316/316L and 317/317L along with higher levels of oxidation resistance, especially in marine applications.

Standard Composition XM-19 Stainless Steel:

  • Chromium: 20 to 23 percent
  • Nickel: 11 to 13 percent
  • Manganese: 4 to 6 percent
  • Molybdenum: 1.5 to 3 percent
  • The balance (55 to 63.5 percent) is comprised of iron

Nitronic 50 Stainless Steel (XM-19) Characteristics:

Stainless steel grade XM-19 is widely used in a long list of industries, including oil and gas, petrochemical, pump, marine, chemical processing and transportation, nuclear, and pulp and paper. Its specific performance attributes include:

  • Outstanding tensile & yield strength
  • Elite resistance to corrosion, especially in marine environments
  • Strong mechanical performance properties, particularly at high-temperature elevations & in sub-freezing conditions
  • Corrosion-resistant             


Unlike some other stainless steel grades, alloy XM-19 will not become magnetic with prolonged exposure to cold temperatures.

XM-19 High Strength (HS) has been specially processed to enhance specific attributes and performance characteristics. The HS process gives this metal higher strength, a technique that involves dual rolling, and cold working (all of which combine to boost final product durability).                                                                                        

Nitronic 50 Stainless Steel (XM-19) grade is extremely versatile and high-performing, given the numerous condition variations seen in this stainless steel alloy. For questions about the availability of grade XM-19 stainless round bars for your intended application, or to inquire about other services, call or email the Ram Alloys’ team today.  


  • Pumps and valves
  • Marine pump shafts
  • Marine Hardware
  • Downhole rigging
  • Pressure vessels

XM-19 Chemical Composition

UNS: S20910 / TYPE: XM-19

 Carbon (C)Manganese (Mn)Phosphorus (P)Sulpher (S)Silicon (Si)Chrome (Cr)Nickel (Ni)Nitrogen (N)Molybdenum (Mo)Other Elements
Min           20.5 11.5 0.20 1.50 Cb 0.10-0.30, V 0.10-0.30
Max 0.06 4.0-6.0 0.045 0.030 1.00 23.5 13.5 0.40 3.00 Cb 0.10-0.30, V 0.10-0.30

XM-19 Mechanical Composition 

UNS: S20910 / TYPE: XM-19

  Grade       UNS NumberTensile Min (psi)Yield Min (psi)Elongation Min %Reductions Min %Hardness BHN
XM-19 S20910          
 Cond-A   100,000 55,000 35 55 293 Max
 Cond-HS   135,000 105,000 20 50 *


Nitronic® is a registered trademark of AK Steel Corp. and used by Electralloy, and the information herein is independent of AK Steel Corp. and Electralloy, and is not authorized by, endorsed by, sponsored by, affiliated with or otherwise approved by AK Steel Corp. or Electralloy.


Need more information? click here for a quote or call us at 713.466.1890 to speak with a Ram Alloys representative.