What is 1.4567 Stainless Steel?

1.4567 stainless steel, commonly known as Nitronic 50 or UNS S34565, is a high-strength, nitrogen-strengthened austenitic stainless steel. It offers a combination of high strength, excellent corrosion resistance, and good wear and galling resistance, making it suitable for demanding applications in aerospace, marine, chemical processing, and high-stress fastener industries.

 

This high-strength austenitic grade is standardized under key international designations.

Standard	Equivalent Grade
EN (Europe)	1.4567
ASTM/AISI (USA)	Nitronic 50, UNS S34565
Common Name	Nitronic 50

Its composition includes high levels of chromium, nickel, molybdenum, and nitrogen for strength and corrosion resistance.

Element	C	Si	Mn	P	S	Cr	Ni	Mo	N
Content (%)	≤ 0.06	≤ 1.0	4.0 - 6.0	≤ 0.04	≤ 0.03	16.0 - 18.0	11.0 - 13.0	2.0 - 3.0	0.20 - 0.40

It offers significantly higher strength than standard austenitic grades while maintaining good ductility.

Property	Yield Strength (Rp0.2)	Tensile Strength (Rm)	Elongation (A)	Hardness (HB)
Typical Value	≥ 415 MPa	760 - 965 MPa	≥ 35%	≤ 270

 

Key Characteristics and Applications of 1.4567 / Nitronic 50

High Strength and Good Toughness: Provides approximately twice the yield strength of 316 stainless steel while maintaining excellent impact toughness.

Excellent Corrosion Resistance: Offers corrosion resistance comparable to 316L in many environments, with better resistance to chloride pitting and crevice corrosion.

Good Wear and Galling Resistance: Performs well in moving contact applications, such as bearings, bushings, and valve components.

 

Primary Applications:

Aerospace: Fasteners, landing gear components, and high-stress structural parts.

Marine: Shafts, pumps, and valves in seawater environments.

Chemical Processing: High-stress components exposed to corrosive media.

Oil & Gas: Downhole tools, wellhead components, and high-pressure fasteners.

 

How does Nitronic 50 (1.4567) compare to 17-4PH (1.4542)?
Nitronic 50 is an austenitic stainless steel, while 17-4PH is martensitic precipitation-hardening. Nitronic 50 offers better corrosion resistance, especially in chloride environments, and maintains its properties at cryogenic temperatures. 17-4PH can achieve higher hardness and strength but may be more susceptible to stress corrosion cracking. Nitronic 50 is non-magnetic and has better weldability without post-weld heat treatment.

 

What are the machining considerations for Nitronic 50 stainless steel?
Nitronic 50 has a high work hardening rate, which can make machining more challenging. Recommended practices include using rigid setups, sharp cutting tools, moderate speeds and feeds, and adequate cooling. It is often machined in the annealed condition. Despite its strength, it can be machined successfully with proper techniques.

 

Looking for a Reliable Supplier of 1.4567 / Nitronic 50 Stainless Steel?
GNEE Steel supplies high-performance Nitronic 50 (1.4567) stainless steel in bar, wire, plate, and forging forms for demanding aerospace, marine, and industrial applications. We provide full material certification and processing support. If you have any requirements, please feel free to contact us.