E52100 Chrome steel high precision balls for ball bearings


HRGQ is currently developing high precision 52100 steel balls of G3, G5 for ball bearings applications in aerospace and automotive industries. Our Nadcap standard modern heat treating facilitates, equipped with high temperature uniformity and precision controlled atmosphere, have guaranteed to maintain uniformed hardness range. Advanced lapping and grinding processes have also help to achieve tightest roundness and highest surface roughness requirements. HRGQ has strictly supply chain management when comes to raw materials procurement. All supplies are subject to periodic audit to make sure consistence quality of steels.

Material Analysis
E52100GCr15
Carbon0.93%-1.05%Carbon0.95%-1.05%
Manganese0.25%-0.45%Manganese0.20%-0.40%
PhosphorusMaximum of 0.025%PhosphorusMaximum of 0.025%
SulphurMaximum of 0.015%SulphurMaximum of 0.020%
Silicon0.15%-0.35%Silicon0.15%-0.35%
Chromium1.35%-1.60%Chromium1.40%-1.65%
NickelMaximum of 0.25%NickelMaximum of 0.25%
MolybdenumMaximum of 0.10%MolybdenumMaximum of 0.10%
CopperMaximum of 0.30%CopperMaximum of 0.25%
OxygenMaximum of 0.0015%OxygenMaximum of 0.0012%
AluminumMaximum of 0.050%AluminumMaximum of 0.050%
* Per ASTM A295-2014* Per GB18254-2016
Mechanical PropertiesPhysical Characteristics
E52100E52100
Modulus of Elasticity29500 KpsiDensity0.283 lbs./in3(7.83g/cm3)
Elongation In Two Inches5%Corrosion ResistanceNo
Reduction In Area8%
Tensile Strength325 Kpsi
Yield Strength295 Kpsi
Normial DiameterGrade
3.175mm-12.70mmG5,G10
Size is also avaiable in inches.