UNS S31603

316L round bar

EN 10204 3.1

316L round bar supplies molybdenum-bearing stainless performance in wet 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

Upload drawing

Which standard is on your order?

Raw Material Specifications

Heat Treatment

Solution annealed; cold worked for strengthened conditions

Solution annealing restores a ductile corrosion-resistant structure, while specified cold work raises strength without precipitation aging.

What we can make in 316L

Full-length round bar

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 round-bar blank

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 · Cold worked
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 316L fits — and what matters

Stainless steel fermentation tanks with circular access doors and pipe fittings in a brewery

Food & Beverage Equipment

Conveyor shafts and guide components

316L 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.

Finished diameter · machining allowance · straightness
Food & Beverage Equipment fasteners
Water-treatment machinery with parallel green pipes, gray pumps and yellow access platforms

Water Treatment & Desalination

Treatment-pump shafts and actuator parts

316L 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.

Finished diameter · machining allowance · straightness
Water Treatment & Desalination fasteners
White centrifugal pump with a bolted casing, black inlet hose and worn paint

Pumps, Valves & OEM

Valve stems and pump-drive collars

316L 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.

Finished diameter · machining allowance · straightness
Pumps, Valves & OEM fasteners

Same round bar. Different material priorities.

316L material data
UNS S17400

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.
17-4 PH round bar
UNS N06625

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.
Inconel 625 round bar
UNS S31803 / S32205

Duplex 2205

Duplex strength and chloride-corrosion resistance.

Connection priority
The mechanical requirement of the machined section
S31803 or S32205
The specified UNS fixes the chemistry. Solution treatment, section size and the ordered mechanical or corrosion tests establish the final duplex condition. Include liquid retained at the machined diameter and cut surfaces of the future part in the exposure description.
Duplex 2205 round bar

From drawing to documented delivery

Heat treatment
Heat treatment
CNC machining
CNC machining
Rockwell hardness testing
Rockwell hardness testing
Wooden-crate packing
Wooden-crate packing
  1. 01Drawing & BOMForm, dimensions and quantity
  2. 02Material & formingGrade, heat and manufacturing route
  3. 03Final inspectionGeometry, threads and ordered tests
  4. 04Documents & dispatchLot records and identified packing

Order documents

Material identity
UNS S31603 · 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 316L round bar enquiry

QUOTE LIST ITEM316L round bar; UNS S31603; Full-length bar

Questions about 316L 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.

Technical references & photo credits