AISI 201 Stainless Steel Balls – Cost-Effective Austenitic Stainless Steel Balls
AISI 201 stainless steel balls provide an economical solution for applications that need a polished surface, useful mechanical properties and moderate corrosion resistance without the higher alloy cost of AISI 304 or AISI 316. This chromium-manganese austenitic grade uses manganese and nitrogen to replace part of the nickel content. SDBALLS supplies metric and inch sizes for hardware, furniture, appliances, casters, decorative products and general industrial assemblies.
| Item | Conteúdo de Página Recomendado |
| Nome do produto | AISI 201 / SS201 solid stainless steel balls |
| Material | AISI 201 / SUS 201 chromium-manganese austenitic stainless steel |
| Faixa de Diâmetro | 1.0-50.8 mm; metric and inch sizes, subject to production confirmation |
| Graus de Precisão | G100, G200, G500 and G1000; confirm by size and application |
| Superfície | Ground, polished or high-gloss |
| Aplicações típicas | Hardware, furniture fittings, appliances, luggage, casters, decorative and general industrial components |
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Visão geral do produto
AISI 201 is an austenitic stainless steel with chromium, manganese, nitrogen and reduced nickel. The material can provide an attractive polished appearance and useful strength at a controlled alloy cost.
It is best suited to indoor, mildly exposed and general industrial conditions where moderate corrosion resistance is sufficient. Material selection must consider moisture, chlorides, cleaning media, temperature, load, ball grade and expected service life.
Material Selection and Technical Positioning
- Compared with AISI 304, AISI 201 is normally more economical but provides lower general corrosion resistance.
- Compared with AISI 316/316L, AISI 201 is less suitable for marine, high-chloride and aggressive chemical environments.
- Compared with AISI 420 or 440C, AISI 201 is not selected for through-hardened, high-wear bearing duty.
- Cold working during ball production can increase magnetic response. Buyers must state a measurable magnetic requirement when magnetism affects the assembly.
Especificações técnicas
The values below are product-family references. The quotation, drawing, agreed standard and inspection plan control the final supply specification.
| Parâmetro | Typical SDBALLS Supply Range or Note |
| Material | Aço inoxidável AISI 201 |
| Família de Aço | Chromium-manganese austenitic stainless steel |
| Common Designations | AISI 201 / SUS 201 |
| Product Form | Solid precision ball |
| Diâmetro | 1.0-50.8 mm; other sizes by production review |
| Grau de Precisão | G100 / G200 / G500 / G1000; size dependent |
| Dureza | Condition and process dependent; final range confirmed in the approved specification |
| Densidade | Approximately 7.8-7.9 g/cm3 |
| Acabamento da superfície | Ground / polished / high-gloss |
| Resistência à corrosão | Moderate; lower than AISI 304 and AISI 316 |
| Resposta Magnética | May increase after cold working; specify acceptance criteria if required |
| Embalagem | Bags, plastic containers, cartons, pails, drums, pallets or OEM packing |
Referência de Composição Química
The following AISI 201 ranges are reference values for material selection. Final chemistry must follow the agreed standard, batch material certificate and purchase order.
| Elemento | Typical Reference Range |
| Carbon C | 0.15% max |
| Manganese Mn | 5.50-7.50% |
| Silicon Si | 1,00% máx. |
| Phosphorus P | 0.060% max |
| Sulfur S | 0.030% max |
| Chromium Cr | 16.00-18.00% |
| Nickel Ni | 3.50-5.50% |
| Nitrogen N | 0.25% max |
| Iron Fe | Balanço |
Applications and Application Fit
Application names are selection guides, not universal approval. Confirm the actual load, media, temperature, pressure, service life and compliance requirements.
| Aplicativo | Por que se Adequa | Nota para o Comprador |
| Hardware and furniture | Drawer slides, cabinet hardware, casters and furniture fittings | Confirm load, wear and exposure conditions |
| Household appliances | Switches, mechanisms and visible metal components | Confirm cleaning chemicals and moisture exposure |
| Luggage and mobility hardware | Wheels, casters and rolling hardware | Confirm load and surface requirements |
| Produtos decorativos e de consumo | Polished visible parts, crafts and lighting components | Approve appearance sample when cosmetic limits matter |
| General industrial components | Cost-sensitive, light-duty mechanisms | Not for aggressive corrosion or high-fatigue bearing duty without validation |
Guia de Seleção de Materiais
| Opção de Material | Primary Advantage | Limitação | Typical Fit |
| AISI 201 | Economical, polished appearance, useful strength | Moderate corrosion resistance | Indoor hardware and general industrial use |
| AISI 304 / 304L | Better general corrosion resistance | Higher alloy cost than 201 | Food equipment, general corrosion-resistant assemblies |
| AISI 316 / 316L | Stronger resistance in many chloride and chemical environments | Higher cost and lower hardness than hardened grades | Marine, chemical and hygienic systems |
| AISI 420 / 440C | Heat-treatable, higher hardness and wear resistance | Lower corrosion resistance than 304/316 in aggressive media | Bearings, valves and wear-focused mechanisms |
| AISI 52100 chrome steel | Alta dureza e desempenho em fadiga de rolamentos | Não é inoxidável; requer proteção contra ferrugem | Precision bearings in non-corrosive service |
Manufacturing and Process Control
Production control may include material verification, wire or blank preparation, cold heading, flashing, grinding, lapping or polishing, cleaning, final inspection and export packing. The approved order must define grade, diameter, precision grade, surface condition and document requirements.
Quality Control and Inspection
- Raw material and material-certificate verification
- Diameter, tolerance and roundness inspection
- Surface condition and visual inspection
- Hardness verification when specified
- Precision-grade verification
- Batch identification and traceability
- Packing and label inspection
Opções de Embalagem
Use clean bags, plastic containers, cartons, pails, drums, palletized export packing or customer-specific packaging according to ball diameter, quantity, surface finish and transport method. Confirm anti-scratch and moisture-control requirements when appearance is important.
Como Especificar para Cotação
Ask the buyer to provide the following information so the sales and engineering teams can confirm the correct material and production route.
- Material grade AISI 201 or approved equivalent
- Diameter in millimetres or inches
- Required grade or diameter tolerance
- Quantity and annual forecast
- Application and operating environment
- Surface finish and cosmetic limits
- Magnetic acceptance requirement, if applicable
- Inspection documents, packing, destination and trade term
FAQ Técnico
Q What are AISI 201 stainless steel balls?
A They are solid balls made from a chromium-manganese austenitic stainless steel with reduced nickel content. They are commonly selected for economical hardware and general industrial applications.
Q How does AISI 201 compare with AISI 304?
A AISI 201 is normally more economical and can provide useful strength and a polished appearance, while AISI 304 usually provides better general corrosion resistance.
Q Are AISI 201 balls magnetic?
A Magnetic response can vary. Cold working during ball production may increase magnetism, so a measurable acceptance limit should be specified when the application is sensitive to magnetism.
Q Are AISI 201 balls suitable for outdoor or marine use?
A Sustained moisture, chlorides and cleaning chemicals must be evaluated. AISI 304, 316/316L or another validated material is normally preferred for more corrosive service.
Q Quais tamanhos e especificações estão disponíveis?
A The reference range is 1.0-50.8 mm in G100, G200, G500 and G1000. Final capability depends on diameter, quantity, surface and production route.
Q What information is required for a quotation?
A Provide material, diameter, grade or tolerance, quantity, application, environment, surface finish, magnetic requirement, documents, packing and destination.
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