Resources Contact Us Home
High-strength martensitic stainless steel having superior fatigue properties in corrosive and erosive environment and method of producing the same

Image Number 2 for United States Patent #5232520.

A high strength martensitic stainless steel having superior anti-fatigue characteristics when used in a corrosive or erosive environment. The steel has a proof strength of 80 to 110 kg/mm.sup.2 and a composition containing specified amounts of carbon, silicon, manganese, chromium, nickel, molybdenum, vanadium, and nitrogen, the balance being substantially iron and incidental inclusions. The contents of the additives are such that a nickel equivalent Nieq given by the following Formula (1) ranges between 10.5 and 12.9 wt. %:where, [Ni], [Mn], [Cr], [Si], and [Mo], respectively represent the contents of Ni, Mn, Cr, Si, and Mo, respectively. The steel may also contain niobium or copper. The steel is produced by a process which includes a hot work and a subsequent cooling at a specific cooling rate to a specific temperature range.

  Recently Added Patents
System, apparatus, and method for fast startup of USB devices
Smooth silicon-containing films
Leg mounted portable computer
Electrowetting display devices with a reflective plate structure
Battery loading and unloading mechanism
Target output device and extreme ultraviolet light source apparatus
Operation controlling apparatus
  Randomly Featured Patents
Hose connection piece, a hose coupling and a hose fitting having a hose connection piece
Method of making a catheter having interlocking ribbed bond regions
Dual diaphragm differential pressure transducer
Device for ducting gas in a centrifuge block
Apparatus for heat treatment of material in pieces at high temperature
Method of inquiring
Bifurcated bed covering
Nonvolatile semiconductor memory
Cyclic peptide antifungal Agents
Extreme pressure and wear resistant grease with synergistic sulfate and carboxylate additive system