High Quality 7mm Diameter loose grade 100 AISI420 stainless steel ball bearings
Grade 100 AISI420 Stainless steel loose ball bearings hardened to 53 - 57 Rockwell Scale, these offer higher hardness and a considerable resistance to corrosion against water, steam, oil, gasoline and alcohol.
They are not suitable to be used with chemical agents.
This type of ball is suitable for valves, special bearings, in which the protection against rustproof-greases is poor or absent.
Min Crushing Load: 2700kg
Hardness: 53 - 57 HRC
Approximate qty per litre: 3400
Weight each: 1.40g
Can not be drilled
Attracted to magnets: Yes
Tensile Strength: 180,000 psi
Yield Strength: 150,000 psi
Density: 0.290 lbs/cu in
AISI 420/420C, X30CR13/X46CR13 Z40 C13, EN56D, Wks 1.4034/1.3541
Tensile Strength: 95,000-250,000 psi
Density: 0.279 lbs/cu in
Chemical composition (percentage)
Chromium 12 - 14
|Dimensions - D (outside diameter)||4mm|