AISI 304 and 304L Stainless Steel Balls for Valves and Pumps
REDHILL supplies AISI 304 and 304L stainless steel balls for valves, pumps, dispensers and industrial mechanisms. These austenitic grades combine toughness with good corrosion resistance. In addition, 304L has a lower carbon limit than 304.
Common European References: AISI 304: 1.4301 / X5CrNi18-10; AISI 304L: 1.4306 / X2CrNi19-11.
Key Technical Specifications
The following figures provide material reference values. Therefore, confirm the required standard and material condition when ordering.
- AISI 304 Alloy Content: Chromium 18–20%, nickel 8–10.5%, carbon ≤0.08%.
- AISI 304L Alloy Content: Chromium 18–20%, nickel 8–12%, carbon ≤0.03%.
- Structure: Austenitic chromium-nickel stainless steel.
- Hardness: Typically 25–39 HRC for cold-worked balls; confirm for the specified size and condition.
- Density: Approximately 7.9 g/cm³.
- Magnetic Properties: Generally non-magnetic when annealed; cold working can increase magnetism.
Strength and Magnetic Properties
Cold working increases the strength and hardness of 304 and 304L. However, heat treatment does not harden these grades. Therefore, define the required hardness for the finished ball.
Cold working can also increase the magnetic response. As a result, magnetic properties depend on the material and manufacturing process. Also specify any magnetic permeability limit that your device requires.
Corrosion Resistance
Both grades resist corrosion in many freshwater and mild process environments. However, chlorides can cause pitting. Therefore, match the steel to the fluid, temperature and cleaning conditions.
Applications of AISI 304 and 304L Stainless Steel Balls
For example, common uses include:
- Valves and Pumps: Check balls for dispensers, aerosol valves and sprayers.
- Food Processing Equipment: Components for liquid handling and dispensing systems.
- Consumer and Automotive Products: Small mechanical parts and retaining elements.
- Industrial Mechanisms: Balls for suitable bearings, guides and low-load assemblies.
Available Grades and Sizes
- Precision Grades: G100–G1000.
- Diameters: 0.5–150.0 mm.
Available combinations depend on diameter, grade and material condition. Finally, send us your ball size, steel grade, quantity and working conditions. We can then confirm suitable options, availability and lead time.