250Pcs 4Mm 440C Stainless Steel Bearing Balls G25 Precision

Specifications: Ball Diameter: 4mm(+/-0.0625) Precision Grade: G25 Material: 440C Stainless Steel Package Contents:250 x Precision BallsDescriptions: Bearing balls are useful in valve pumps, and spray paint bottles for agitation, sprinkling systems, appliance components, casters, drawer slides, locking mechanisms, semi-precision bearings, and lots of other industrial and consumer products. Notice: Please confirm the Ball Diameter you are ordering. (To better understand each type of commonly used stainless steel and its properties, see the following descriptions.) 440C Stainless Steel is a high carbon martensitic stainless steel. It has high strength, medium corrosion resistance, good hardness, and wear resistance 304 Stainless Steel is the most widely used stainless steel. It is austenitic stainless steel and has a higher corrosion resistance than ordinary steel. 316L Stainless Steel is also austenitic stainless steel. It offers higher corrosion resistance than 304. 201 Stainless Steel is the least expensive type of stainless steel. It is tough in cold environments but has lower corrosion resistance. 201 stainless steel is the preferred choice for applications that require low cost, high durability, and no concern for exposure to corrosive elements.