NHBB PES 1.102 - 440C Stainless Steel
NHBB PES 1.102 refers to the New Hampshire Ball Bearings material specification for 440C stainless steel, which is utilized for the fabrication of precision bearings and bearing assemblies. This material specification ensures that the material possesses the required hardness, cleanliness, fatigue resistance, and wear resistance that meet the aerospace standards set by NHBB.
Typical Applications
440C Stainless Steel, which is aligned with NHBB PES 1.102, is used in niche aerospace and other high-precision applications. It is specified for ball bearings and bearing races, rotor and spindle assemblies, aerospace control systems and actuators, bearings for medical and instrumentation devices, and other high-speed, small-sized mechanical devices.
What is 440C Stainless Steel ?
440C is a high carbon martensitic stainless steel that has slightly more carbon than 440A and 440B giving it the highest hardness of any martensitic stainless alloy. This grade has excellent wear resistance making it perfect as a bearing steel used as ball bearings and bearing races.
440 STAINLESS STEEL SPECIFICATIONS
440A Stainless Steel
440A is a high-carbon martensitic stainless steel, AOD melted for refined quality and consistency. It contains slightly less carbon than 440B and 440C
440C Stainless Steel
440C is the hardest and most wear-resistant grade in the 440 series due to its highest carbon content. It achieves excellent dimensional stability and superior bearing performance after hardening.
Certified Material for Critical Service
Fighter Jet Metals supplies 440A, 440B, 440C, and 440FSE Stainless Steel in various forms—bars, plates, and forgings—with full traceability and certification. Each alloy meets the highest aerospace and industrial standards, offering guaranteed quality and performance.