302 Stainless Steel Round Bar: 302 (UNS S30200) is a chromium-nickel austenitic stainless grade related to 304, with a different carbon specification. It is used in drawn, formed and machined parts where correct supply condition matters.
Download Mozaic 302 Stainless Steel Round Bar reference PDF
302 Stainless Steel Round Bar — Technical Specification Overview
| Property | Material or specification details |
|---|---|
| Material designation | 302 Stainless Steel Round Bar |
| Chemical / alloy identity | UNS S30200; chromium 17–19%; nickel 8–10%; carbon 0.15% max |
| Specification to confirm | ASTM A276/A479 for applicable bar orders |
| Supplied condition | Annealed or cold-worked; strength varies with manufacturing history |
| Representative parts | Machined stainless pins, precision fasteners, cold-formed components |
| Processing requirements | Finished bar OD, surface roughness, straightness, length and heat/lot traceability determined per purchase order |
Illustrative reference only. The exact edition of the purchase standard, product form, supply condition and mill test report govern material acceptance.
Selection, Properties and Applications
302 and 304 are related but not identical; verify composition, material form and actual mill certificate.
Common applications include machined stainless pins, precision fasteners, cold-formed components. The correct steel grade depends on operating environment, hardness or corrosion criteria, machining requirements, and traceability. An engineer should approve any alternative material designation and required temper before production.
Centerless Ground Bar and Processing
Mozaic Precision Metals can review 302 Stainless Steel Round Bar sourcing and precision centerless grinding, polishing, straightening, saw cutting and packaging. Service capability depends on bar diameter, length, condition, starting material and tolerances. Requirements for straightness, roundness, finished diameter and surface finish should be separately specified, not assumed to share one universal tolerance.
Related Material Grades
- 304 stainless round bar — compare chemistry, condition and suitability before substituting
- 303 stainless steel — compare chemistry, condition and suitability before substituting
Request a Material Quote
Please identify the exact grade, product standard/revision, annealed or heat-treated condition, starting and final OD, bar length, quantity, surface and inspection criteria, and certificates needed. Request a quote from Mozaic, email sales@mozaicprecision.com, or call 847-637-8379.