Specifications and dimensions
- Round, square, hexagonal, and flat sections
- Hot-finished, cold-finished, peeled, ground, or polished supply
- Diameter or across-flats tolerance, straightness, length, and end condition
Reviewed technical and procurement guidance · 3 August 2026
Stainless Steel Bar
A guide to stainless round, square, hexagonal, and flat bar covering grade, condition, tolerances, surface, straightness, testing, and machining allowance.
02Product form
Continue by product form or grade
Common grades
Grade + product
304 Stainless Steel Bar
Procurement guide for 304 stainless round, square, hex and flat bar, covering condition, finish, tolerance, straightness, machining, inspection and traceability.
→Grade + product316L Stainless Steel Bar
Procurement guide for 316L stainless bar where molybdenum-bearing corrosion resistance and low-carbon welded-service context are required with controlled dimensions and traceability.
→Grade + product410 Stainless Steel Bar
Procurement guide for heat-treatable 410 martensitic stainless bar, covering annealed or hardened condition, hardness, machining allowance, testing and heat-treatment traceability.
→Standards and supply condition
- ASTM A276/A276M
- ASTM A484/A484M
- EN 10088-3
Manufacturing and processing
- Hot working establishes the section before solution treatment, annealing, or grade-specific heat treatment.
- Cold drawing, peeling, centerless grinding, and polishing control tolerance and surface.
Typical applications
- Machined components
- Shafts and fasteners
- Pumps and valves
- Food, chemical, and architectural hardware
Quality and acceptance controls
- Verify the heat or coil number and material test certificate against the ordered grade and product standard.
- Confirm dimensions, tolerances, surface condition, permitted repair, marking, and traceability.
- Agree inspection, export packing, moisture protection, document language, and third-party witness points before production.
Include in your RFQ
- Grade and governing product specification
- Dimensions, tolerances, and ordered quantity
- Condition, finish, edge, end, or processing route
- Required testing, inspection, and certification
- Packing, marking, and traceability requirements
- Destination and required delivery date
Selection limits
- Grade name alone does not define product form, governing specification, dimensions, finish, inspection, or fitness for the service environment.
- Published ranges and reference guidance are not stock promises or purchase acceptance criteria; the ordered specification and certificate control.
3 August 2026
Sources and technical review
RFQ support
Stainless Steel Bar
A guide to stainless round, square, hexagonal, and flat bar covering grade, condition, tolerances, surface, straightness, testing, and machining allowance.