304L round bar
ASTM A276
304L round bar supplies low-carbon austenitic compatibility with fabricated stainless equipment to machined shafts, retainers and fastening parts. Diameter allowance and delivery condition determine the route from stock to the final loaded section.
- MOQ
- 100 kg
- Samples · typical
- ~20 days
- Production · typical
- 25–35 days
- Heat treatment
- Solution annealed
EN 10204 3.1 MTC + heat-number traceability
Which standard is on your order?
Raw Material Specifications
Heat Treatment
Solution annealed; cold worked for strengthened conditionsSolution annealing restores a ductile corrosion-resistant structure, while specified cold work raises strength without precipitation aging.
What we can make in 304L
Full-length bar
Use for repeated turning of shafts, studs and valve components from one heat-traceable stock length. Bar diameter must include machining allowance for the finished surface and straightness.
Cut blank
Use saw-cut blanks for short-run machining or forging starts. Cutting allowance and end squareness affect how much usable length remains after facing.
- Section
- Solid round
- Size
- Diameter × length
- Surface
- Turned · Ground · Drawn
- Supply form
- Bars · Cut pieces
- Final condition
- Solution annealed
- Inspection
- Cross-section · Surface · Delivery condition · Heat identity
Supply & preparation
Cut lengths preserve the heat identity of the original bar. Turning or grinding allowance follows the required finished diameter.
Material condition
The final annealed or specified strengthened condition is linked to the lot; an aging treatment is not assumed for a solid-solution alloy.
Finished geometry
Diameter, straightness, surface condition and cut length are checked against the stock order.
Where 304L fits — and what matters
Food & Beverage Equipment
Conveyor shafts and guide components304L round bar provides machining stock for conveyor shafts and guide components, including turned shoulders, bearing seats and threaded ends. Bar diameter includes the allowance for finishing the final part. Cleaning liquid can remain under the part; exposed finish and access for cleaning matter at the assembled joint.
Water Treatment & Desalination
Treatment-pump shafts and actuator parts304L round bar provides machining stock for treatment-pump shafts and actuator parts, including turned shoulders, bearing seats and threaded ends. Bar diameter includes the allowance for finishing the final part. The water stream, cleaning cycle and retained liquid define exposure at the installed part.
Pumps, Valves & OEM
Valve stems and pump-drive collars304L round bar provides machining stock for valve stems and pump-drive collars, including turned shoulders, bearing seats and threaded ends. Bar diameter includes the allowance for finishing the final part. Repeated maintenance makes fit, engagement and access part of the component specification.
Same round bar. Different material priorities.
304L material data316L
Molybdenum-bearing stainless performance in wet equipment.
- Connection priority
- The mechanical requirement of the machined section
- Washdown and retained cleaner
- Cleaner concentration, rinse quality and deposits determine the exposure in covered joints. The low-carbon designation does not independently establish a fastener strength class. Include liquid retained at the machined diameter and cut surfaces of the future part in the exposure description.
17-4 PH
Aging-controlled strength and hardness.
- Connection priority
- The mechanical requirement of the machined section
- H900 versus H1150
- The aging condition changes the balance of strength, hardness and toughness. A replacement part needs the specified H condition, especially where contact wear and shock load occur together.
Inconel 625
Solid-solution strength and resistance to aggressive process liquids.
- Connection priority
- The mechanical requirement of the machined section
- Annealed or solution-annealed 625
- The delivery condition affects strength and high-temperature response. Keep the specified condition with the component’s mechanical acceptance; 718-style aging is not the strengthening route for 625. Include liquid retained at the machined diameter and cut surfaces of the future part in the exposure description.
From drawing to documented delivery
- 01Drawing & BOMForm, dimensions and quantity
- 02Material & formingGrade, heat and manufacturing route
- 03Final inspectionGeometry, threads and ordered tests
- 04Documents & dispatchLot records and identified packing
Order documents
- Material identity
- UNS S30403 · heat number · ordered condition
- Stock acceptance
- Grade chemistry, supplied condition and ordered mechanical requirements.
- Dimensional record
- Cross-section · Surface · Delivery condition · Heat identity
- Traceability
- EN 10204 3.1 material certificate · production lot · identified packing
Build your 304L round bar enquiry
Questions about 304L round bar
Is the bar condition the same as the finished-part condition?
Not necessarily. A solution-treated or annealed blank may be selected for machining before a specified final treatment. Stock and finished-part mechanical records need to identify the conditions they represent.