440C High Precision Solid Ball


440C stainless steel balls has strong material strength. They have been widely used in many applications requiring good toughness, hardness and dimensional stability. HRGQ offers 1/16″-2″ 440C stainless steel balls. With precisely controlled Nadcap certified heat treating (AMS 2759/5), lapping and passivation (AMS 2700), HRGQ’s 440C balls are with maximum corrosion resistance. HRGQ provides 440C materials from Carpenter, Hitachi and Cogne which are comply with DFARS requirements.

Material Analysis
Type 440C
Carbon0.95% to 1.20%
ManganeseMaximum of 1.00%
SiliconMaximum of 1.00%
PhosphorusMaximum of 0.04%
SulphurMaximum of 0.03%
Chromium16.00% to 18.00%
Molybdenum0.40% to 0.65%
NickelMaximum of 0.75%
CopperMaximum of 0.50%
* Per AMS 5630L
Mechanical Properties
Modulus of Elasticity29000 Kpsi
Elongation In Two Inches2%
Reduction In Area55%-70%
Ultimate Tensile Strength285 Kpsi
Physical Characteristics
MagneticYes
HardnessMinimum HRC 58
Density0.277 lbs./in3(7.67g/cm3)
Corrosion ResistanceFair
Nominal DiameterGradeHardness
1/16"(1.5875mm)-2"(50.8mm)G5-G200HRC 58-65/ HRC58-62
HRGQ provides 440C materials from Carpenter, Hitachi and Cogne which are comply with DFARS requirements