5mm/7mm Stainless Steel Balls & Shots Wear and Corrosion Resistant Polished for

Product Specification

Polished stainless steel balls and shots in 5mm and 7mm nominal sizes offer two clearly identified options for component and process enquiries. EB Castings handles specifications based on the required size, stainless grade and operating conditions. Choosing between a precision component ball and a process shot starts with how the product will be used, because their acceptance requirements can be different.

Two nominal sizes, distinct order requirements

A 5mm order and a 7mm order should be identified separately throughout purchasing, receiving and storage. Where both sizes are used at the same facility, clear lot labels help prevent mixing. If a process requires a blend, the intended size proportions should be specified rather than created by combining available stock without a defined target.

For component use, diameter tolerance and sphericity may be central to fit. For a process quantity of shots, the relevant specification may instead include an accepted size distribution and limits on irregular pieces. These are different ways of defining the product, and the order should make clear which inspection approach applies.

Match the stainless grade to the service

Stainless steel describes a broad material family, not one fixed hardness or density. The exact grade determines the appropriate material basis for the order. Where a previous batch performed well, its material designation and supply condition provide a better starting point than appearance alone.

Energy and mining environments vary widely. Describe the handled medium, moisture, temperature and contact conditions when reviewing the material. Abrasive contact, impact and corrosion may occur together, but their relative importance can differ between locations. The grade and finished condition should be selected for that actual combination.

Polished surfaces and wear considerations

The polished surface is a visible feature of this product range. It should be supported by a clear finish requirement when surface quality is important to the process or assembly. Specify whether acceptance is based on visual condition, a measured roughness limit or a component drawing.

Wear performance depends on more than brightness or a single hardness number. Contact forces, the opposing material and the presence of abrasive particles can influence the result. For replacement enquiries, describe where wear develops and whether the balls lose shape, become marked or experience another observed failure pattern.

Inspection, separation and traceability

Incoming inspection can check the ordered size, surface condition and the agreed material documentation. Where a size distribution is specified, the sampling method and acceptance basis should be understood by both parties. A measurement taken from one piece cannot describe the complete distribution of a bulk lot.

Store different sizes and grades in clearly identified containers. During transfer to the production area, keep the product protected from dirt and unintended mixing with other media. Maintaining the lot reference through use makes later feedback more useful when comparing operating results or placing a repeat order.

Prepare a useful replacement enquiry

Include the selected nominal size, exact alloy requirement if known, quantity and intended function. Add any existing inspection specification and photographs that explain the installation or wear pattern. For a new application, the operating description helps establish which product characteristics need to be agreed before the quotation is finalized.

Technical specification overview

Contact EB Castings

Choose a defined size and material condition for your next order. Contact EB Castings with your 5mm or 7mm stainless steel ball and shot requirements to discuss a specification matched to the intended duty.

Product reference photographs

Existing product photographs illustrate the ball form and finish. The exact size, material condition and inspection requirements follow the agreed order specification.