Longer Service Life:
Engineered to develop higher strength, finer finish, cleaner chemistry and better fatigue resistance than standard grades of alloys and carbon steels such as SAE 1045, 4140, 4150, 4340, etc.

Precision Finish:
Turned, ground and polished to very close tolerances, Nichroloy will save you time and money in machining and down-time.

Availability:
Baldwin International maintains one of the largest stocks of precision finished shafting in the U.S. With a full array of sizes from 1/4" dia. to 9" dia. in common 1/16" increments, as well as metric sizes, we can supply your specific shaft how you want it and when you want it.

Factors	4140	Nichroloy	Advantages of Nichroloy
Manufacturing Process	Open Hearth Furnace. Large heats, little uniform control	Small Electric Furnace heats	Greater control, less defects, cleaner steel which increases toughness and service life
Tensile Strength (Heat Treated 28-32 RC)	125,000 PSI	155,000 PSI Typical (Higher on smaller diameters)	Approximately 25% higher strength
Yield Strength (Heat Treated 28-32 RC)	100,000 PSI	130,000 PSI Typical (Higher on smaller diameters)	Approximately 25% higher strength
Stress Relieved & Machine Straightened	Optional - must be specified	Stress relieved at mill	Minimizes Bowing and "Walking" during machining
Low Sulphur Vacuum Degassed	Not a commercial practice	Degassed at mill	Builds toughness by removing impurities in the steel
Fatigue Resistance	Low Toughness	High degree of toughness	Higher endurance limit. Will minimize fatigue caused by twisting and flexing in use.
Wear Resistance	Hard and soft spots, Uneven wear	Uniform hardness	Uniform hardness and less decarburization give increased wear life. Tends to work-harden with wear.
Machinability	Not consistent	Uniform	Uniform grain and hardness offer better machinability