Use it for turned parts and shafts
Round bar is the routine starting form for shafts, pins, bushings, fasteners and CNC-turned parts.
Round Bar Supply
Stainless Steel Round Bar Supplier for
Stainless Steel Round Bar Supplier for
CNC Machining and Stock Supply
FX Stainless Steel supplies stainless steel round bar for CNC machining, shafts, pins, fasteners and general fabrication. Buyers can review 303 stainless steel round bar for CNC machining, 304 / SUS304 round bar, ASTM A276 304 stainless steel round bar and 316 round bar for marine parts.
1,000+ Tons
Bar ready stock
303 / 304 / 316+
Grade paths
3 - 300 mm
Diameter review
MOQ 100kg
Small-order support
Quick Answer
When should buyers choose stainless steel round bar?
Match grade to machining or corrosion
303 helps chip control, 304 / SUS304 is a balanced general grade, and 316 is reviewed for marine or higher-corrosion parts.
Confirm standard wording early
Buyers may ask for ASTM 304, SUS304 or 304 stainless steel bar; the final standard should be confirmed by drawing, MTC and order requirement.
Specification Reference
Stainless steel round bar supply reference
| Item | Common Review | Buyer Note |
|---|---|---|
| Grades | 303 / 304 / 304L / 316 / 316L+ | 303 for machining, 304 / SUS304 for general use, 316 / 316L for stronger corrosion review |
| Standards | ASTM A276 / ASTM A479 / ASME SA479 / JIS G4303 / GB/T 1220 review | ASTM A276 304 round bar, ASME SA479 316L round bar, JIS G4303 SUS304 and GB/T 1220 wording should match the PO and MTC |
| Diameter | 3 - 300 mm project review | Routine stock depends on grade, diameter, finish and current warehouse condition |
| Finish | Hot rolled / cold drawn / polished / centerless ground | Finish path affects tolerance, surface condition and machining behavior |
| Service | Cut-to-length / MTC / export packing | Useful for small MOQ trial orders and repeat Southeast Asia shipments |
Useful Tool
Open Weight Calculator
Calculate round bar theoretical weight
Check estimated round bar weight by grade, diameter, length and quantity before quotation.
Applications
Where stainless steel round bar fits
Shafts and pins
Round bar is a natural starting stock for shafts, pins, guide parts and turned components.
ShaftsPins
CNC machining
303 stainless steel round bar can be reviewed when chip control and machining speed matter.
303 optionBar-fed CNC
Marine and project parts
316 stainless steel round bar is reviewed when chloride exposure or marine use is part of the application.
316 optionMarine parts
Size / Finish / Tolerance Matrix
Stainless steel round bar size and finish review
Round bar buyers should confirm diameter, finish and tolerance before comparing price. This table is a practical sourcing reference, not a fixed stock promise.
| Round Bar Path | Common Diameter Review | Finish / Tolerance | Best-fit Use | Buyer Note |
|---|---|---|---|---|
| Hot rolled round bar | Larger diameter project review | Black or machined route | General machining blanks and heavy parts | Confirm turning allowance and surface requirement |
| Cold drawn round bar | Small to medium diameter review | Bright surface, h10 / h11 discussion | CNC feeding, pins and repeat turned parts | Useful for stainless steel round bar sizes that need better surface |
| Centerless ground round bar | Precision diameter review | h9 or drawing tolerance review | Shafts, precision pins and tight-fit parts | Confirm tolerance, straightness and finish before quote |
| 304 / SUS304 round bar | Routine stock-size review | Cold drawn, polished or ground | General fabrication and equipment parts | ASTM A276 304 bar or SUS304 round bar wording should match the PO |
| 303 round bar | CNC-size review | Bright or ground route | Automatic lathe and chip-control parts | Review sulfur, MTC and machining trial needs |
| 316 / 316L round bar | Marine-size review | Polished or ground route when required | Marine shafts, chemical parts and corrosion-focused jobs | Review Mo content, MTC and exposure condition |
Buyer Fit
Use round bar when the part starts from a turned diameter
Round bar is usually the simplest bar shape for turning, drilling, threading and shaft work. The key is confirming the grade, diameter, finish and tolerance before comparing price.
Best fit
Best for shafts, pins, fasteners, bushings and CNC turned parts.
Standard note
Use ASTM A276, ASTM A479 / ASME SA479, JIS G4303 or GB/T 1220 wording when the drawing or MTC needs a formal standard.
Inquiry note
Send grade, diameter, tolerance, finish, cut length, quantity and destination for a cleaner quotation.
Related Grades and Shapes
Compare round bar with nearby bar options
303 Stainless Steel Round Bar
Review 303 round bar when easier CNC machining and chip control matter.
304/304L Stainless Steel Round Bar
Review 304 / SUS304 round bar for general-purpose stock supply and fabrication.
316L Stainless Steel Round Bar
Review 316L round bar when marine or chloride exposure drives the material choice.
Centerless Ground Stainless Steel Bar
Move to ground bar when h9 tolerance, roundness or smoother surface matters.
Stainless Steel Flat Bar
Use flat bar when the finished part keeps a rectangular profile for supports, frames or brackets.
Related Reading
Read the guides behind round bar selection
Round Bar vs Hex Bar vs Square Bar
Compare shape choice when CNC machining route, material waste and final part geometry matter.
How Cold Drawn Stainless Steel Bars Are Made
Review how cold drawn bar supports better surface, tighter tolerance and machining-ready stock.
h9 vs h10 vs h11 Tolerance for Cold Drawn Stainless Steel Bar
Use this guide when round bar feeding stability, tolerance and repeat CNC work are important.
How to Read and Verify a Stainless Steel MTC
Check heat number, chemistry and document consistency before releasing a stainless steel round bar order.
FAQ
Stainless steel round bar FAQ
What is stainless steel round bar used for?
It is commonly used for shafts, pins, fasteners, bushings, CNC turned parts and general fabrication.
Is SUS304 the same as 304 stainless steel round bar?
SUS304 is the JIS grade naming commonly used by Japan-related buyers. 304 is the general grade name, and the final requirement should be confirmed by drawing, standard and MTC.
What does ASTM A276 304 stainless steel round bar mean?
It means 304 stainless steel bar reviewed under ASTM A276 requirements. Buyers should still confirm size, finish, tolerance and certificate needs. For pressure-related 316L work, buyers may also request ASTM A479 / ASME SA479 wording.
Can stainless steel round bar be supplied with MOQ from 100kg?
Yes. MOQ from 100kg can be reviewed for selected stock sizes, depending on grade, diameter, finish and current availability.
Send the grade, diameter and destination for your round bar inquiry.
Share whether you need 303, 304, SUS304, ASTM A276 304, 316 or another requested grade, plus diameter, finish, cut length and quantity.
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