P2000 Cr-Mn-N Steel Round Bar

Product Description

P2000 is a premium, high-nitrogen, fully austenitic non-magnetic stainless steel produced by BÖHLER (standardized under the European Werkstoffnummer 1.4452 and designated by the EN chemical name X13CrMnMoN18-14-3).

By completely replacing traditional nickel with a precisely engineered combination of Manganese and Interstitial Nitrogen, P2000 achieves an ultra-stable austenitic matrix. It is widely recognized for delivering an exceptional combination of high yield strength, superior pitting resistance, and a completely stable, non-magnetic baseline.

Chemical Composition (Mass Weight %)

To ensure absolute elemental homogeneity and prevent gas-void or porosity defects from the ultra-high nitrogen concentration, P2000 is typically manufactured using Pressure Electroslag Remelting (PESR).

Key Engineering Performance Characteristics

• Extreme Localized Corrosion Resistance (PREN $\ge$ 45): Due to the synergy of $18\%$ Chromium, $3\%$ Molybdenum, and an exceptionally high interstitial Nitrogen content, its Pitting Resistance Equivalent Number (PREN) sits above 45. It easily outperforms standard austenitic grades like 316L in warm, highly chlorinated solutions, seawater, and harsh physiological fluids.

• Strictly Amagnetic ($\mu \le 1.005$): P2000 is entirely free of delta ferrite and resists transformation into strain-induced martensite. It remains completely non-magnetic even after undergoing severe cold drawing, heavy surface machining, or deep work-hardening.

• Nickel-Free Bio-Compatibility: Because its nickel content is tightly restricted to trace residual limits ($\le 0.05\%$), it completely avoids the risk of nickel-allergy complications. This makes it fully compliant with strict medical regulations (such as EU MDR) regarding sensitive tissue exposure.

Mechanical Properties (At Room Temperature)

Thanks to solid-solution strengthening via nitrogen atoms tightly packed within the FCC crystal lattice, P2000 features a baseline annealed yield strength that is roughly double that of standard 300-series stainless steels. It also features incredible work-hardening potential.

Technical Processing Guidelines

• Hot Forming: Must be precisely executed within a strict thermal window between 1200°C and 1000°C, followed immediately by rapid water quenching or forced-air cooling to eliminate any risk of localized chromium nitride precipitation.

• Solution Annealing: 1050°C to 1120°C with swift, immediate cooling.

• Machinability: Due to its immense strain-hardening potential and structural tenacity, P2000 causes rapid tool wear if allowed to glaze or rub. Fabricators must implement heavy positive feed rates, rigid clamping, sharp cobalt/carbide inserts, and rich, high-pressure cooling fluids.

Primary Applications for Round Bars

P2000 round bars are heavily utilized for structural components operating under high mechanical loads inside highly corrosive or magnetically sensitive environments:

• Medical & Surgical Technology: High-fatigue surgical instruments, implant components, orthodontic fixtures, and precision dental tools requiring total non-magnetism during MRI diagnostics.

• Energy & Industrial Subsea Systems: Non-magnetic actuator shafts, downhole sensor housings, high-pressure valves, and marine pump components exposed to harsh seawater or brine.

• Aerospace & Precision Instruments: Amagnetic high-load structural pins, guiding rods, satellite chassis fasteners, and high-end horology (luxury watch casings and internal movements).