XD15NW Bar - Stainless Steel

Summary

MATERIAL FOR REQUIREMENTS MELT PRACTICE TYPICAL SPECS. CORROSION RESISTANCE TYPICAL TEMP. LIMIT ALT. TO:
XD15NW Bar Stainless Bearing Steel, High Nitrogen (CREN) ESR AMS5925 Superior to 440C  830°F (443°C) 440C

General

XD15NW is a martensitic stainless steel primarily used for bearings and ballscrews. This grade was developed for high stress applications where high hardness, fatigue resistance and corrosion resistance are paramount.

Features and benefits

  • Significantly better corrosion resistance relative to 440C (X105CrMo17)
  • HRC of at least 58 after tempering at low (around 180°C) and high (500°C) temperatures
  • Low residual austenite after heat treatment in order to ensure a high dimensional stability of the parts.
  • Heat treatment is relatively simple, utilizing standard equipment.

Typical applications

  • Bearings (ball, roller and spherical)
  • Ball and roller-screws
  • Rod Ends

Stocking sizes

  • 0.112"ø to 8.0"ø (2.8 mm ø – 203.2 mm ø)
  • Stock Summary       (115 KB)  

Chemical composition

  C Si Mn Cr Mo V N Ni
min. 0.37 - - 15.00 1.50 0.20 0.16 -
max. 0.45 0.60 0.60 16.5 1.90 0.40 0.25 0.30

Reference publications

Corrosion-resistant spherical roller bearings - Next generation protection for the pulp and paper industry, SKF and MRC Product Brochure 2011

Download brochure 

Characterization of the XD15NW High Nitrogen Martensitic Stainless Steel for Aerospace Bearing, Presented in Belguim in Dec 2002 at 4th International Conference on Launcher Technology "Space Launcher Liquid Propulsion"

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A Comparison of the Mechanical and Physical Properties of Contemporary and New Alloys for Aerosapce Bearing Applications, Presented at Bearing Steel Symposia in 2002.

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Behavior of the Nitrogen Bearing Martensitic Stainless Steel: XD15NW in Cryotechnical Environment. 4th European Mechanics of Materials Conference on Processes, Microstructures and Mechanical Properties

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Specifications

X40CrMoVN16-2 UNS: S42025 Euro Number: 1.4123 SAE: AMS 5925 Boeing: BMS 7-357 Download Brochure: XD15NW LITERATURE

 

Downloads:
Product Brochure     (1813 KB)

Stock Summary     (115 KB)

XD15NW


X105CrMo17 (440C)

Aspect of the surface after 96 h salt spray (NaCl) exposure For both grades, heat treatment cycle: 1050 °C Oil/ -75 °C/ 180 °C

(Source: Aubert & Duval Brochure)