Stainless Steel Cold Drawn Bars, Flat Bars, Square Bars, Hex Bars and Custom Profiles
Junxiong Metal supplies stainless steel cold drawn bars and custom profiles for machining, hardware components, fasteners, fittings, shafts, equipment parts and OEM assemblies. Common inquiry grades include 304, 304L, 316, 316L, 303, 201, 410, 420, 430, 430F, 431, 416, 17-4PH / 630, 440C and buyer-specified 2205 duplex stainless steel.
Available sections: stainless steel round bar, flat bar, square bar, hexagonal bar and selected custom stainless steel profiles according to buyer drawings.
Quotation information needed: grade, standard, shape, size, tolerance, length, surface condition, quantity, packing requirement and destination country.
Short Answer: Which Stainless Steel Bars Can Junxiong Supply?
Junxiong Metal can review stainless steel cold drawn round bars, flat bars, square bars, hex bars and custom profiles in commonly requested grades such as 304, 304L, 316, 316L, 201, 430, 430F, 303, 416, 17-4PH / 630 and 440C, plus buyer-specified 2205 duplex round bar. Buyers must state the exact governing standard, grade, product form, supplied condition, dimensions, tolerance, quantity and MTC requirements. Heat-treatment or hardness requirements must also be stated for precipitation-hardening and martensitic grades, while duplex enquiries must identify the exact UNS or EN designation and required product standard.
Stainless Steel Grade Names Buyers Commonly Search
International buyers may search the same stainless steel requirement using AISI, UNS, EN, DIN, JIS or GB grade names. The table below is for search and inquiry reference only. Final substitution or equivalence should not be assumed without checking the buyer’s standard, chemical composition, mechanical properties and MTC requirement.
| Product Direction | AISI / UNS Search Terms | EN / DIN Search Terms | JIS Search Terms | Common Shapes |
|---|---|---|---|---|
| 304 stainless steel | 304 / UNS S30400 | 1.4301 / X5CrNi18-10 | SUS304 | Round, flat, square, hex, custom profiles |
| 304L stainless steel | 304L / UNS S30403 | 1.4307 / X2CrNi18-9 | SUS304L | Round, flat, welded applications |
| 316 / 316L stainless steel | 316 / S31600, 316L / S31603 | 1.4401 / 1.4404 | SUS316 / SUS316L | Corrosion-resistant bars and profiles |
| 2205 duplex stainless steel | 2205 / UNS S32205 or S31803; state the exact ordered designation | 1.4462 | Confirm the exact JIS route; do not infer one from the 2205 search name | Solid round bar and other reviewed bar forms under the specified product standard |
| 303 free machining stainless steel | 303 / UNS S30300 | 1.4305 / X8CrNiS18-9 | SUS303 | Round bar, hex bar, automatic lathe stock |
| 201 stainless steel | 201 / UNS S20100 | 1.4372 / X12CrMnNiN17-7-5 | SUS201 | Flat bar, square bar, selected profiles |
| 430 ferritic stainless steel | 430 / UNS S43000 | 1.4016 / X6Cr17 | SUS430 | Flat bar, square bar, custom profiles |
| 430F free machining stainless steel | 430F / UNS S43020 | 1.4104 / X14CrMoS17 | SUS430F | Round bar, hex bar, machined components |
| 416 free machining stainless steel | 416 / UNS S41600 | 1.4005 / X12CrS13 | SUS416 | Round bar, hex bar, screw-machine parts |
| 17-4PH / 630 precipitation-hardening stainless steel | 17-4PH / Type 630 / UNS S17400 | 1.4542 / X5CrNiCuNb16-4 | SUS630 | Round, square, flat, hex and reviewed custom sections; supplied condition must be stated |
| 440C high-carbon martensitic stainless steel | 440C / UNS S44004 | 1.4125 / X105CrMo17 | SUS440C | Round, flat, square and reviewed custom sections; heat treatment and hardness must be stated |
Stainless Bar Standards and Grade-Route Verification
- ASTM A276/A276M-25: the active ASTM route for common hot- or cold-finished stainless steel bars and shapes, including round, square and hexagonal bars. Free-machining grades use a separate ASTM route.
- ASTM A582/A582M-22: the active ASTM route for hot- or cold-finished free-machining stainless steel bars, relevant when an order specifies grades such as 303, 416 or another listed free-machining type.
- BS EN 10088-3:2023: the European technical-delivery route for corrosion-resistant stainless bars, rods, sections and bright products.
- JIS G 4318:2016: the current Japanese standard for cold-finished stainless steel bars, reconfirmed by JSA in 2025.
- GB/T 1220-2007: the current Chinese national-standard route for stainless steel bars.
Grade-route boundary: the AISI/UNS, EN/DIN, JIS and GB names in the comparison table are buyer search and sourcing routes, not automatic equivalence approvals. The order must identify the exact governing standard and edition, grade, product form, delivery condition, dimensions and tolerances, required properties, heat treatment where applicable and heat-specific MTC.
These publisher references do not prove that a representative photograph is stainless steel, confirm a Junxiong production heat or approve a substitution. Round, flat, square, hexagonal and drawing-defined custom profiles must each be reviewed against the buyer’s applicable product standard and drawing.
304 / 304L Stainless Steel Round, Flat, Square and Hex Bar RFQs
Short answer: Junxiong can review buyer-specified 304 and 304L stainless steel bar enquiries in round, flat, square, hexagonal and drawing-based sections. This is a supply-capability statement, not current-stock or batch-conformity evidence. The quotation must follow the exact ordered grade and standard.
Buyer searches such as 304, UNS S30400, EN 1.4301 and SUS304 can begin a sourcing review, while 304L, UNS S30403, EN 1.4307 and SUS304L identify a separate ordered route. These names must not be substituted automatically from search similarity. ASTM A276/A276M-25, BS EN 10088-3:2023 and JIS G 4318:2016 cover different purchasing routes and must be applied only where the ordered product form and market standard require them.
| Buyer search intent | Required RFQ controls | Evidence boundary |
|---|---|---|
| 304 stainless round bar | Exact standard and edition, diameter, tolerance, straightness, length, surface, supplied condition, quantity and destination. | The representative round-bar photograph on this page shows product form only and does not identify a 304 or 304L heat. |
| 304 stainless flat bar | Width, thickness, edge condition, flatness, straightness, length, surface, cutting allowance and quantity. | No photograph, media title or general capability statement replaces a heat-specific MTC for the ordered flat bar. |
| 304 stainless square or hex bar | Side or across-flats size, corner form, twist, straightness, length, machining allowance and inspection plan. | Availability and conformity are confirmed against the approved order and matching batch documents. |
| 304L stainless bar | State 304L explicitly together with the governing standard, product form, supplied condition and required properties. | 304L is not treated as an informal replacement label for every 304 enquiry. |
Send a complete 304 or 304L stainless bar RFQ or send the standard, shape, size, quantity and destination by WhatsApp.
316 / 316L Stainless Steel Round and Flat Bar RFQs
Short answer: Junxiong can review buyer-specified 316 and 316L stainless steel bar enquiries, including round, flat, square, hexagonal and selected custom sections. The buyer must identify 316 or 316L rather than using the names interchangeably, and must state the exact standard, form, supplied condition and inspection requirements.
| Buyer search intent | Required RFQ controls | Evidence boundary |
|---|---|---|
| 316 stainless round bar | Exact standard, diameter, tolerance, straightness, length, surface condition, quantity, destination and MTC scope. | This page does not publish a heat-specific MTC identifying a pictured bar as 316 or 316L. |
| 316 stainless flat bar | Width, thickness, edge condition, flatness, straightness, length, surface and any cutting or machining allowance. | The approved purchase specification and matching batch documents control acceptance. |
| 316L stainless bar | State 316L explicitly with the governing standard and edition, required form, dimensions, condition and downstream process. | 316L is not approved merely because a supplier can review a general 316 enquiry. |
Send a complete 316 or 316L stainless bar RFQ. Include the application environment, but do not rely on a general corrosion-resistance statement as a substitute for material selection and order acceptance.
2205 Duplex Round Bar RFQ Route
Short answer: Junxiong can review buyer-specified 2205 duplex round bar enquiries when the buyer states the exact designation, governing product standard, supplied condition, diameter, tolerance, straightness, surface, length, inspection scope, heat-specific MTC requirement, quantity and destination. This is a sourcing and production-feasibility statement, not evidence of current stock or conformity of a particular heat.
The search name 2205 duplex round bar is not a complete purchase specification. Alleima lists a solid duplex stainless bar route with UNS S31803 and S32205, EN 1.4462 and product-standard routes including ASTM A479, ASTM A276 and EN 10088-3. Outokumpu also identifies EN 1.4462 / UNS S32205 and S31803 with bar as a product form. These producer references support designation and purchasing-route checks only; they do not prove Junxiong inventory, dimensions, condition or batch conformity.
| RFQ control | Buyer must state | Acceptance boundary |
|---|---|---|
| Exact designation | UNS S32205, UNS S31803 or EN 1.4462 as required by the buyer’s governing document. | The names are related sourcing routes, not permission to substitute one ordered designation for another. |
| Product standard | Applicable standard and edition, such as ASTM A276, ASTM A479 or EN 10088-3, plus any project specification. | The selected standard must cover the ordered product form and required service; a general 2205 description is insufficient. |
| Condition and dimensions | Required supplied condition, diameter, tolerance, straightness, surface finish, length, machining allowance and downstream process. | Alleima’s published size, finish and stock program belongs to Alleima and is not a Junxiong availability statement. |
| Testing and documents | Chemical and mechanical requirements, corrosion or project tests where applicable, inspection level, EN 10204 certificate type and heat traceability. | Only the approved order and its matching heat-specific MTC can establish conformity. |
Primary producer and standards references
- Alleima Sanmac 2205+ solid-bar datasheet: producer evidence for S31803 / S32205, EN 1.4462 and listed bar-standard routes.
- ASTM A276/A276M official standard page: publisher route for stainless steel bars and shapes; confirm the required edition in the purchase order.
- Outokumpu Forta duplex datasheet: producer reference identifying Forta DX 2205, EN 1.4462, UNS S32205 / S31803 and bar as a product form.
Material-selection boundary: 2205 is a duplex austenitic-ferritic stainless grade route, not an informal replacement for 304, 304L, 316 or 316L. The buyer or responsible engineer must approve the exact material, standard, supplied condition and service requirements.
Send a complete 2205 duplex round bar RFQ with designation, standard, diameter, condition, test scope, quantity and destination.
Available Stainless Steel Shapes
Stainless Steel Round Bar
Stainless steel round bars are commonly requested for CNC turning, shafts, pins, bushings, fittings, fasteners and hardware components. Common search grades include 304, 303, 430F, 416, 410 and 420 stainless steel round bar, while 2205 duplex round bar requires its own designation, product-standard, condition and inspection review.
Stainless Steel Flat Bar
Stainless steel flat bars can be reviewed for machinery parts, brackets, guides, hardware components, assemblies and custom cut-to-length requirements. Common search grades include 304, 201 and 430 stainless steel flat bar.
Stainless Steel Square Bar
Stainless steel square bars are used for machined blocks, guide parts, hardware, fixtures and OEM components. Buyers should confirm side size, tolerance, length, surface condition and packing requirement.
Stainless Steel Hex Bar
Stainless steel hex bars are often purchased for fasteners, fittings, nuts, connectors and automatic lathe parts. High-intent grades include 303, 304, 430F and 416 stainless steel hex bar.
Custom Stainless Steel Profiles
Custom stainless steel profiles can be reviewed when the buyer provides a section drawing, sample photo, grade, tolerance and annual quantity. Custom profile feasibility depends on the section shape, material grade, tolerance and tooling requirement.
Manufacturing and Supply Evidence
Technical Facts for Stainless Steel Bar Buyers
| Item | Junxiong Review Point |
|---|---|
| Product type | Cold drawn or bright stainless steel bars, flat bars, square bars, hex bars and custom profiles |
| Common grades | 304, 304L, 316, 316L, 303, 201, 410, 420, 430, 430F, 431 and 416 stainless steel, plus buyer-specified 2205 duplex round bar subject to exact standard and condition review |
| Buyer standards | AISI, ASTM, UNS, EN, DIN, JIS, GB or buyer-specific material requirement |
| Processing review | Cold drawing, straightening, fixed length cutting, chamfering, packing and selected secondary processing can be reviewed by drawing and order quantity |
| Documents | MTC, heat number, packing photos and selected inspection requirements can be discussed before production |
| Quotation basis | Grade, standard, shape, size, tolerance, length, quantity, surface condition, destination country and packing requirement |
Buyer Checklist Before Quotation
Stainless steel bar quotations should not be based on grade name alone. Please prepare the following information before sending an inquiry:
- Required grade and standard, such as 304 / SUS304 / 1.4301, 430F / SUS430F / 1.4104, or an exact 2205 route such as UNS S32205, S31803 or EN 1.4462
- Shape: round, flat, square, hexagonal or custom profile
- Size, tolerance and critical dimensions
- Length and cutting requirement
- Surface condition, straightness or edge requirement
- Quantity per batch and annual demand
- Application: machining, fastener, fitting, shaft, hardware or OEM assembly
- Destination country and export packing requirement
- MTC, inspection or third-party testing requirement
Which Stainless Steel Grades Should Buyers Choose?
The correct stainless steel grade depends on machining, corrosion resistance, magnetic behavior, strength and cost requirements. The following guide is for early sourcing discussion only.
- 304 stainless steel: general-purpose stainless steel bar for common corrosion resistance and industrial components.
- 201 stainless steel: often searched as a lower-nickel alternative for selected flat, square or profile applications.
- 303 stainless steel: free machining stainless steel for CNC turning and automatic lathe parts.
- 430 stainless steel: ferritic stainless steel, often searched by buyers needing magnetic stainless steel or cost-sensitive stainless flat/square material.
- 430F stainless steel: free machining ferritic stainless steel for machined components, round bars and hex bars.
- 416 stainless steel: free machining martensitic stainless steel for shafts, fittings and screw-machine parts.
- 316 / 316L stainless steel: often requested when corrosion resistance is more important than cost.
- 2205 duplex stainless steel: a separate duplex material route for buyer-approved service requirements; state the exact designation, standard, supplied condition and testing instead of treating it as a 304 or 316 substitute.
FAQ for Stainless Steel Bar and Profile Buyers
Can Junxiong supply 304 stainless steel cold drawn bars?
Yes. Junxiong can review 304 and 304L stainless steel cold drawn round bars, flat bars, square bars, hex bars and selected custom profiles. Please send the exact required standard and grade, shape, size, tolerance, condition, length, quantity and MTC scope.
Can Junxiong review 316 and 316L stainless steel bars?
Yes. Junxiong can review 316 and 316L round, flat, square, hexagonal and selected custom-section enquiries. Keep 316 and 316L distinct in the RFQ and specify the governing standard, supplied condition, dimensions, application environment and required batch documents.
Can Junxiong review 2205 duplex round bar?
Yes. Junxiong can review a 2205 duplex round bar RFQ after the buyer states the exact UNS or EN designation, governing product standard, supplied condition, diameter, tolerance, straightness, surface, length, inspection and heat-specific MTC requirements, quantity and destination. This does not claim current stock or identify any representative photograph as 2205.
Are UNS S31803, UNS S32205 and EN 1.4462 automatically interchangeable?
No. They are connected producer and market search routes for 2205 duplex material, but the purchase order must identify the exact designation and governing standard. Junxiong will not approve a substitution from search-name similarity alone.
Can you supply 430F or SUS430F stainless steel bars?
430F / SUS430F stainless steel bars can be reviewed for free machining applications such as automatic lathe parts, fittings, fasteners and small machined components. Final grade confirmation should follow the buyer’s standard and MTC requirement.
Is 430 stainless steel the same as stainless iron?
Many buyers informally call 430 stainless steel “stainless iron” because it is ferritic and magnetic, but professional inquiries should use grade names such as 430, SUS430, UNS S43000 or EN 1.4016.
What stainless steel grades are suitable for CNC machining?
303, 430F and 416 are commonly searched for free machining stainless steel applications. 304 can also be machined, but buyers should confirm machining difficulty, tolerance, surface and tool life requirements.
Can Junxiong produce custom stainless steel profiles?
Custom stainless steel profiles can be reviewed when the buyer provides a section drawing, sample photo, grade, tolerance, length and quantity. Tooling feasibility depends on section shape and order volume.
Can different national grade names be substituted automatically?
No. Grade names such as AISI, UNS, EN, DIN, JIS and GB are useful for search and initial sourcing, but final substitution must be confirmed by chemical composition, mechanical properties, buyer standard and MTC requirement.
What information is needed for a stainless steel quotation?
Please provide grade, standard, shape, size, tolerance, length, quantity, surface condition, application, destination country and required documents.
Can Junxiong provide export packing and material documents?
Export packing, MTC, heat number and selected inspection requirements can be reviewed before production according to order requirements.
Related Stainless and Cold Drawn Steel Products
Choosing among 430F, base 430 and 416 depends on machining, corrosion, strength and heat-treatment requirements. Review the 430F vs 430 vs 416 stainless steel buyer selection guide before fixing the purchase standard, condition and inspection requirements.
For automatic turning and screw-machine components, review the grade-specific page for 430F, SUS430F and EN 1.4104 free-machining stainless steel bars.
For a separate hardenable free-machining route, review the 420F, 420FSe and SUS420F stainless steel bar RFQ guide; do not substitute these names for 430F or 1.4104 without checking the governing standard.
For precipitation-hardening requirements, review the 17-4PH, 630, 1.4542 and SUS630 stainless bar RFQ guide and state the supplied solution or ageing condition.
For high-hardness martensitic requirements, review the 440C, 1.4125 and SUS440C stainless bar RFQ guide and state the heat-treatment route, hardness and machining or grinding allowance.
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