AUSTENITIC CORROSION-RESISTANT STAINLESS STEEL

AISI 302/304/304L Stainless Steel Balls

Clean, corrosion-resistant austenitic stainless balls for pumps, dispenser valves, food equipment, sprayers and consumer assemblies.

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AISI 302/304/304L Stainless Steel Balls supplied by SDBALLS — PRODUCT REFERENCE / FINAL SPECIFICATION BY QUOTATION

PRODUCT OVERVIEW

What are aisi 302/304/304l stainless steel balls?

AISI 302, 304 and 304L balls are austenitic stainless steel spheres selected for corrosion resistance, toughness and clean surface condition rather than maximum hardness.

302 can offer somewhat stronger mechanical response, 304 is the broad general-purpose grade, and 304L provides lower carbon content when the purchase specification or sensitization risk requires it.

TECHNICAL SPECIFICATIONS

Start with measurable requirements.

Values below are product-family references. The quotation, drawing, agreed standard and inspection plan control the final supply specification.

Technical itemReference specification

MaterialExact 302, 304 or 304L grade must be stated on the purchase order

Diameter Range0.5–150 mm

Precision GradeG100, G200, G500 and G1000 typical

ToleranceControlled by the agreed precision grade, drawing or purchase specification

HardnessHRC 20–39 typical, cold-work dependent

DensityApprox. 7.9 g/cm³

Surface FinishPolished, cleaned, dry and optionally passivated

Roundness / SphericityControlled according to the agreed precision grade and inspection method

Temperature ResistanceApplication, load, atmosphere and material-grade dependent

Chemical ResistanceGood general corrosion resistance; verify chlorides and cleaning chemistry

PackagingBulk, small-quantity, container, bag, carton, export pallet or customized packing

MagnetismNormally non-magnetic in annealed condition; cold work may cause slight magnetism

PRODUCT SELECTION GUIDANCE

Compare materials before substituting.

Material selection affects load, wear, corrosion, temperature, precision, service life and total program cost.

Material optionPrimary advantageLimitationBest fit

302 stainlessGood toughness and mechanical propertiesNot maximum corrosion resistanceSprayers, pumps, valves and mechanisms

304 / 304L stainlessVersatile general corrosion resistance and clean finishLow hardness for wear-critical contactFood, packaging, dispenser and general fluid control

316 / 316L stainlessImproved chloride and chemical resistanceHigher costMarine, chemical and pharmaceutical systems

420C / 440C stainlessMuch higher hardness and wear resistanceLower general corrosion performanceBearings, valves and repeated hard contact

KEY PERFORMANCE FEATURES

Performance that purchasing teams can verify.

General corrosion resistance

Suitable for many atmospheric, water-based and hygienic equipment environments after compatibility review.

Clean surface condition

Polishing, cleaning and optional passivation support product-contact and appearance requirements.

Tough austenitic structure

Resists brittle behavior and supports forming and repetitive low-load contact.

Multiple alloy choices

302, 304 and 304L let buyers match mechanical, carbon-content and specification priorities.

TYPICAL APPLICATIONS

Specify the work the ball must perform.

Application names are starting points—not approval of universal suitability. Share the real medium, load, speed, pressure, temperature, life target and compliance needs.

Pumps, sprayers & dispensers

Moving and checking elements in compatible cosmetic, household and industrial fluids.

Food-related equipment

General corrosion-resistant components where hygiene and cleaning requirements are defined.

Medical application valves

Selected non-implant mechanisms subject to buyer validation and documentation.

Consumer packaging

Aerosol, ink cartridge and dispensing systems requiring clean stainless components.

Typical applications for AISI 302/304/304L Stainless Steel Balls — REPRESENTATIVE APPLICATION ENVIRONMENTS

QUALITY & DOCUMENTATION

Build the evidence into the purchase order.

Document requirements should be defined before quotation so the inspection method, sampling level, traceability and external testing can be planned correctly.

Material verification against the agreed steel grade and purchase specification
Diameter, tolerance and precision-grade inspection using calibrated equipment
Hardness and heat-treatment verification when applicable
Surface finish and visual-defect inspection to the agreed acceptance criteria
Roundness / sphericity and lot-consistency inspection for the specified precision level
Batch traceability through heat, lot and controlled production records
Material certificates and inspection reports available when agreed before quotation
RoHS, REACH, PPAP-style records and third-party testing by project agreement

PACKAGING OPTIONS

Protect precision through delivery.

Final packing depends on material, diameter, surface sensitivity, order weight, storage time and destination.

Small-quantity packing

Size-separated bags, bottles, trays or protected containers for samples, repair and qualification lots.

Bulk industrial packing

Inner bags, cartons, pails or steel drums selected around diameter, total weight and handling method.

Surface protection

Clean/dry, passivated, lightly oiled or rust-preventive packing according to alloy and storage risk.

OEM & export packing

Customer labels, counted packs, batch separation, export pallets and line-ready packaging by agreement.

Supported formats: bulk packaging · small-quantity packaging · plastic containers · bags · cartons · export pallets · customized packaging.

SMALL QUANTITY & SAMPLE ORDERS

Validate before you scale.

SDBALLS Industry Corp. supports North American customers with sample quantities, prototype requirements, testing programs and specialty ball inquiries.

State the exact 302, 304 or 304L grade, fluid, cleaning chemistry, diameter, tolerance, surface and document needs before sample approval.

PrototypeTestingRepairR&DSmall batch production

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PRODUCT FAQ

Answers for engineering and purchasing teams.

What sizes are available?

The reference range is 0.5–150 mm, with availability dependent on exact alloy, grade, finish and quantity.

What precision grades can be supplied?

Common grades are G100, G200, G500 and G1000. Tighter requirements require project review because these alloys are not hardened bearing steels.

How corrosion resistant is this material?

These grades provide good general corrosion resistance, but chloride-rich, marine and aggressive chemical service may require 316/316L or another material.

Are these steel balls magnetic?

They are generally non-magnetic when annealed, but cold working during ball production can create slight magnetic response.

Can SDBALLS provide material certificates and inspection reports?

Yes. Define the required material certificate, dimensional report, hardness report, compliance record, PPAP-style documentation or third-party test before quotation so the correct inspection plan can be priced.

Do you support samples and small-quantity orders?

Yes. SDBALLS Industry Corp. supports North American buyers with samples, prototype quantities, repair lots and small-batch programs where the requested size, grade and material condition are available.

CONTACT SDBALLS U.S.

Bring us the application and requirement.

Include product, material, size or shot size, grade, hardness, finish, quantity, packaging, application and required documentation for a faster quotation.

SDBALLS Industry Corp.Email: info@sdballs.usWhatsApp: +1 424 351 5470Website: www.sdballs.usNorth American Business Support