420 Grade Stainless Steel Balls has extreme toughness and low magnetic permeability. These Balls have high tensile strength at elevated temperatures and resistance to scaling. 420 Grade Stainless Steel Balls are manufactured by Balco Industries
Balco Industries also manufactures various types of steel balls and bicycle parts. The 420 Grade Stainless Steel Balls has rigid corrosion resistance. These Balls have tensile strength of 92,000 psi and specific weight of 0.280 lbs/cubic inch. These Balls have hardness ranging from 52-55 HRC. These Balls contains 0.28-0.36% carbon, 12.0-14.0% silicon, 0.8% silicon and 0.1% manganese.