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High-carbon steel balls are spherical products made from carbon steels with a carbon content ranging from 0.60% to 1.70%. Their performance differs significantly from that of low-carbon steel balls, and their key characteristics are "high hardness and high wear resistance."
AUSI 1010/1015 Low-Carbon Steel
Low-carbon steel balls are spherical products made from carbon steel with a carbon content ranging from 0.0218% to 0.25%. They exhibit good toughness, excellent weldability, easy machinability, and low cost.
Bearing steel balls are used in high-speed, low-noise bearings for bicycles, motorcycles, automobiles, slide rails, universal joints, luggage, and the electronics industry. They can also be used to grind other media.
Chrome steel balls are used in high-speed, low-noise bearings, as well as in bicycles, motorcycles, automobiles, slide rails, universal joints, luggage, and the electronics industry. They can also be used for grinding other media.
304 stainless steel balls are among the most widely used types of steel balls on the market. They can be applied in medical devices, chemical industry, aerospace, and plastic hardware—including perfume bottles, sprayers, valves, nail polish containers, motors, switches, electric irons, washing machines, refrigerators, air conditioners, pharmaceutical products, auto parts, bearings, instruments, and baby bottles.
316 Stainless Steel: Primarily used in fields such as medical devices, food machinery, cosmetic accessories, body jewelry, and instrumentation. The 316 stainless steel ball is a product with relatively high requirements and is typically employed in specialized industries including medical devices, chemical processing, aerospace, and aviation—such as perfume bottles, sprayers, valves, nail polish containers, body jewelry, and mobile phone circuit boards.
As a representative of martensitic stainless steels, 420 stainless steel balls combine high hardness, excellent wear resistance, and a certain degree of toughness. After heat treatment (quenching and tempering), they also exhibit outstanding corrosion resistance and polishability. They have good machinability and are ideally suited for manufacturing parts that endure high loads and high wear resistance.
440C steel balls are spherical components made from high-carbon, high-chromium martensitic stainless steel. Their characteristics fully leverage the core performance of 440C steel and, combined with their “spherical shape,” make them ideal for applications such as bearings, grinding, and precision transmissions—resulting in three key advantages: hardness, wear resistance, and rust resistance.
SUS420/SUS420C stainless steel ball
420 stainless steel balls are commonly used in industries that demand both high precision and excellent rust resistance: motorcycle parts, pulleys, stainless steel bearings, plastic bearings, crafts, valves, and petroleum applications.
The microstructure of this steel is martensitic, and its production process has high technical requirements. There are relatively few domestic enterprises capable of producing stainless steel 440C; thus, companies that can manufacture 440C materials often earn the reputation of being special-grade stainless steel producers. The heat treatment process is rather complex and prone to cracking, while also demanding high precision. This steel is the hardest stainless steel ball among all steel balls: its Rockwell hardness (HRC) is ≥58. Its hardness is comparable to that of bearing steel balls, yet it boasts superior rust- and corrosion-resistant properties.
Stainless steel balls are used in a variety of hardware industries, handicrafts, and plastic products, such as lamps, switches, motorcycle parts, luggage and bags, bearings, and die-cast components.
A brass sphere is a spherical product made from an alloy of copper and zinc. It boasts excellent electrical and thermal conductivity, with a density typically ranging around 8.4–8.5 g/cm³. It exhibits moderate strength and wear resistance, though these properties are lower than those of materials such as stainless steel. Brass has good machinability and is relatively soft, making it easier to process through casting, forging, machining, and other techniques.
A brass sphere is a spherical product made from an alloy of copper and zinc. It boasts excellent electrical and thermal conductivity, with a density typically ranging around 8.4–8.5 g/cm³. It possesses moderate strength and wear resistance, though these properties are lower than those of materials such as stainless steel. Brass has good machinability; it is relatively soft and thus easier to process through casting, forging, machining, and other techniques.
The core material of glass beads is glass, primarily made from silica as the base ingredient, with the addition of sodium carbonate (to lower the melting point) and calcium carbonate (to enhance stability). Some beads may also contain small amounts of colorants—such as metal oxides like iron, cobalt, and chromium—which impart colors including red, blue, and green. Glass beads exhibit excellent light transmission, a brittle texture (easily broken upon impact), moderate hardness, low cost, and lack any special functional properties.
Slingshot carbon steel ball G1000 6mm
EN - DIN standard steel grades: 1.413, 1.4318, 1.4307, 1.4306, 1.4311, 1.4301, 1.4948, 1.4303, 1.4541, 1.4878, 1.4404, 1.4435, 1.4401
The steel ball has a hardened surface but a low core hardness; its surface hardness is low, and its resistance to corrosive attack is also low.
Plastic balls of different specifications
Acrylic resin appears as colorless, cylindrical granules with a smooth surface. The particle size ranges from 2 mm to 5 mm in any direction, and the particles are free of mechanical impurities. The powder form is off-white, non-caked, and qualified products may exhibit a slight yellowish tint. Polypropylene resin is non-toxic, with a density ranging from 0.90 g/cm³ to 0.91 g/cm³—making it one of the lightest among common plastics. Polypropylene resin boasts excellent mechanical properties and heat resistance, with a usable temperature range from -30°C to 140°C. It also exhibits outstanding electrical insulation performance and chemical stability; it virtually does not absorb water and remains inert when in contact with most chemicals. However, it exhibits corrosive effects upon contact with fuming sulfuric acid, fuming nitric acid, chromic acid solutions, halogens, benzene, carbon tetrachloride, chloroform, and other similar substances.
Zirconia balls exhibit excellent corrosion resistance and can withstand the erosion of various acidic and alkaline solutions; however, they may degrade under strongly alkaline conditions.
