X13CrMnMoN18-14-3 Cr-Mn-N Steel Round Rods

Product Description

X13CrMnMoN18-14-3 is a high-nitrogen, austenitic stainless steel often referred to by its Werkstoff number 1.4452. It is a specialized material designed for applications requiring high mechanical strength, excellent corrosion resistance, and a strictly non-magnetic profile.

This grade is frequently used as a high-performance alternative to standard molybdenum-bearing steels like 316L, particularly when higher yield strength is required.

1. Chemical Composition (Typical)

The alloy is characterized by its high manganese and nitrogen content, which stabilizes the austenite phase while significantly increasing the material's hardness and strength.

2. Key Technical Properties

• High Strength: The addition of Nitrogen ($N$) acts as a solid solution strengthener, providing a yield strength roughly twice that of standard 316L ($1.4404$).

• Corrosion Resistance: With a Chromium content up to 19% and the addition of Molybdenum, it offers excellent resistance to pitting and crevice corrosion, especially in chloride-bearing environments.

• Non-Magnetic: It remains stable and non-magnetic even after significant cold working or cryogenic exposure ($\mu \leq 1.01$).

• Wear Resistance: Due to its high work-hardening rate, it performs well in environments involving light abrasive wear.

3. Mechanical Properties

Values typically represent the solution-annealed condition for round rods:

• Yield Strength ($0.2\%$ Offset): $\geq 430$ MPa

• Tensile Strength: $750 - 950$ MPa

• Elongation ($A_5$): $\geq 35\%$

• Hardness: $\approx 200 - 250$ HBW

4. Comparison with Other Grades

Compared to other Cr-Mn-N steels like BioDur 108, X13CrMnMoN18-14-3 retains a significant amount of Nickel. This makes it more suitable for traditional industrial and marine environments where the complete absence of nickel is not a requirement, but higher ductility and general corrosion resistance are.

5. Common Applications

• Watchmaking & Fine Mechanics: Used for cases and movement components due to its non-magnetic nature and high polishability.

• Medical Technology: Surgical instruments and tools where high strength and corrosion resistance are mandatory.

• Oil & Gas: Specialized downhole tools and sensor housings requiring non-magnetic properties.

• Aerospace: Fasteners and structural rods where weight-saving (via high strength) and low magnetic interference are critical.

6. Processing & Machinability

• Machining: Like most high-nitrogen steels, 1.4452 is prone to rapid work-hardening. Heavy-duty equipment, sharp carbide tools, and constant feed rates are necessary to prevent glazing.

• Welding: It is generally weldable; however, care must be taken to maintain the nitrogen content in the weld pool to prevent the formation of ferrite or the loss of strength. Matching fillers are usually required.