Stainless steel Alloy 50 / 1.3964 / XM-19 – properties, applications and technical data
Alloy 50, also known as Nitronic 50, 1.3964 or XM-19, is an austenitic stainless steel with high strength, good corrosion resistance and very good wear and galling resistance.
The alloy combines high mechanical strength with excellent resistance to corrosion in marine environments, chloride solutions and chemical process environments.
Alloy 50 is often used in the marine industry, pump and valve components, chemical process industry and other applications where both high strength and good corrosion resistance are required.
Properties of Alloy 50 / 1.3964
Alloy 50 is an austenitic stainless steel alloyed with chromium, nickel, manganese and nitrogen to achieve high strength and improved corrosion resistance.
The nitrogen in the alloy contributes to higher strength and improved resistance to pitting and crevice corrosion.
- Type: high-strength austenitic stainless steel
- Alloy: Fe-Cr-Ni-Mn-N
- Structure: austenitic structure
- Designations: Alloy 50, Nitronic 50, Werkstoff 1.3964, UNS S20910, XM-19
- Typical composition: Cr ~20–23%, Ni ~11–13%, Mn ~4–6%, N ~0.2–0.4 %
Advantages
- Higher strength than many austenitic stainless steels
- Very good corrosion resistance in marine environments
- Good resistance to pitting and crevice corrosion
- Excellent galling and wear resistance
- Good toughness even at low temperatures
Limitations
- Higher material cost than standard stainless steels
- Machining can be more demanding than for simpler stainless steels
- Not intended for very high temperatures
Common product forms for Alloy 50
- Round bar
- Forgings
- Sheet and strip
- Pipe and tube
- Special dimensions according to drawing
Typical components manufactured in Alloy 50
- Pump shafts
- Valve components
- Marine shafts and fittings
- Fasteners and fasteners
- Components in the chemical process industry
Corrosion resistance
Alloy 50 offers very good corrosion resistance in marine environments, chloride solutions and many chemical process environments.
The alloy has better resistance to pitting corrosion than many standard austenitic stainless steels.
Environments where Alloy 50 performs well
- Marine environments
- Chemical process industry
- Pumps and valves
- Offshore applications
Environments to avoid
- Applications where simpler stainless steels are sufficient
- Very high temperature environments
Technical data
| Yield strength (0.2%) |
~380–690 MPa depending on condition |
| Tensile strength |
~690–965 MPa |
| Elongation |
~35 % |
| Density |
~7.9 g/cm³ |
| Modulus of elasticity |
~193 GPa |
| PREN value |
~34–36 |
With a global network of suppliers, we can offer Alloy 50 / 1.3964 in technical dimensions for demanding industrial applications.
Contact us for price, availability and technical advice.
Supplier of Alloy 50 with certified quality
HARALD PIHL is one of Europe's largest suppliers of special alloys and advanced stainless steels, including high-strength materials such as Alloy 50.
With over 100 years of experience in the metal industry, we deliver materials with full traceability and certification according to EN 10204 3.1 / 3.2 as well as relevant ASTM and ISO standards.
Cutting, testing and quality assurance are carried out in-house to ensure the right tolerances and fast global delivery for technically demanding projects.
- Europe's largest stock of nickel and titanium alloys
- Special alloys from stock
- ASTM / ISO standards
- Top quality for safety-critical applications
- Fast global delivery
- Full material certification (EN 10204 3.1 / 3.2)
- Over 100 years in the metal industry
- Nickel and titanium experts
