Hot Rolled Stainless Steel Bar
JCNMetal — ISO 9001 quality control • Third-party inspection supported (SGS / BV / TÜV)
Reliable Stainless Steel Bars for Industrial Use
At JCNMetal, we manufacture and export hot rolled stainless steel bars with stable quality, high strength, and straightness that you can rely on.
We know your project depends on materials that don’t bend, crack, or fail under load — that’s why every bar is made under strict rolling and inspection control.
Why Choose Hot Rolled Stainless Steel Bars
Hot rolling forms strong, dense steel that performs well under pressure and temperature.
Our bars are designed for welding, machining, and heavy structural applications, and they can handle long-term outdoor or high-load use without distortion.
- Building structures and machine frames
- Bridges, ships, and fabrication works
- Chemical and power plant supports
Available Shapes
Round Bar
Rolled at high temperature with a dense structure and uniform cross-section.Standard finish is black or pickled — ready for machining or forging.
Flat Bar
Wide rectangular section with strong rigidity and good bending resistance.Usually supplied with black or shot-blasted surface for construction and shipbuilding use.
Square Bar
Equal sides with excellent stability and strength balance.Ideal for welded frames and mechanical support structures.
Stainless Steel Bar Materials Overview
| Grade (AISI) | JIS Equivalent | EN/DIN | GB |
|---|---|---|---|
| 301 | SUS301 | 1.4319 | 12Cr17Ni7 |
| 302 | SUS302 | 1.4318 | 12Cr18Ni9 |
| 304 | SUS304 | 1.4301 | 06Cr19Ni10 |
| 304L | SUS304L | 1.4306 | 00Cr19Ni10 |
| 304H | SUS304H | 1.4948 | 07Cr19Ni10 |
| 304N | SUS304N1 | 1.4315 | – |
| 309S | SUS309S | 1.4833 | 06Cr23Ni13 |
| 310S | SUS310S | 1.4845 | 06Cr25Ni20 |
| 310H | SUS310H | 1.4845 | – |
| 316 | SUS316 | 1.4401 | 06Cr17Ni12Mo2 |
| 316L | SUS316L | 1.4404 | 00Cr17Ni14Mo2 |
| 316H | SUS316H | 1.4436 | – |
| 316Ti | SUS316Ti | 1.4571 | 06Cr17Ni12Mo2Ti |
| 316LN | SUS316LN1 | 1.4429 | – |
| 317L | SUS317L | 1.4438 | 00Cr19Ni13Mo3 |
| 321 | SUS321 | 1.4541 | 06Cr18Ni11Ti |
| 321H | SUS321H | 1.4541 | – |
| 347 | SUS347 | 1.4550 | 06Cr18Ni11Nb |
| 347H | SUS347H | 1.4912 | – |
| 904L | SUS904L | 1.4539 | 00Cr20Ni25Mo4.5Cu |
| 253MA | SUS253MA | 1.4835 | – |
| 254SMo | SUS254SMo | 1.4547 | 00Cr20Ni18Mo6CuN |
| 17-4PH | SUS630 | 1.4542 | 0Cr17Ni4Cu4Nb |
| 17-7PH | SUS631 | 1.4568 | 0Cr17Ni7Al |
| PH15-7Mo | SUS631 | 1.4542 | 0Cr15Ni7Mo2Al |
| Grade (AISI) | JIS Equivalent | EN/DIN | GB |
|---|---|---|---|
| 405 | SUS405 | 1.4002 | 12Cr13Al |
| 409 / 409L | SUH409 / SUH409L | 1.4512 | 06Cr11Ti / 06Cr12Ti |
| 430 | SUS430 | 1.4016 | 10Cr17 |
| 434 | SUS434 | 1.4113 | 10Cr17Mo |
| 436 | SUS436 | 1.4536 | 11Cr17Ti |
| 439 | SUS439 | 1.4510 | 11Cr19Ti |
| 441 | SUS441 | 1.4509 | 18CrTiNb |
| 444 | SUS444 | 1.4521 | 00Cr18Mo2 |
| 446 | SUS446 | 1.4762 | 25Cr23Al |
| Grade (AISI) | JIS Equivalent | EN/DIN | GB |
|---|---|---|---|
| 410 | SUS410 | 1.4006 | 12Cr13 |
| 410S | SUS410S | 1.4000 | 06Cr13 |
| 420 | SUS420J1 / J2 | 1.4021 / 1.4028 | 12Cr13 / 13Cr13 |
| 420F | SUS420F | 1.4029 | – |
| 431 | SUS431 | 1.4057 | 16Cr2Ni2Mo |
| 440A | SUS440A | 1.4109 | 7Cr17 |
| 440B | SUS440B | 1.4112 | 8Cr17 |
| 440C | SUS440C | 1.4125 | 9Cr18 |
| 416 | SUS416 | 1.4005 | 12Cr12S |
| 420F | SUS420F | 1.4029 | – |
| Grade (AISI / UNS) | JIS Equivalent | EN/DIN | GB |
|---|---|---|---|
| S31803 | SUS329J3L | 1.4462 | 022Cr22Ni5Mo3N |
| S32205 | SUS329J3L | 1.4462 | 022Cr22Ni5Mo3N |
| S32304 | – | 1.4362 | – |
| S32550 | SUS329J4L | 1.4507 | 00Cr25Ni6Mo3CuN |
| S32750 | F53 | 1.4410 | 2507 |
| S32760 | F55 | 1.4501 | 2507MoWCuN |
| S32900 | SUS329J1 | 1.4477 | 00Cr23Ni5Mo |
| S32950 | F52 | – | 00Cr26Ni6MoN |
| 2205 | SUS329J3L | 1.4462 | 00Cr22Ni5Mo3N |
| 2507 | NAS74N | 1.4410 | 00Cr25Ni7Mo4N |
| 926 | SUS926 | 1.4529 | 00Cr25Ni7Mo4CuN |
| 654SMo | SUS654SMo | 1.4652 | 00Cr26Ni8Mo3CuN |
We Help You Avoid Common Problems
Our goal is simple —
You Receive Bars That Work Right The First Time.
| Common Issue | How We Solve It |
|---|---|
| Bars arrive bent or twisted | Every bar is straightened twice before packing. |
| Surface too rough for welding or coating | Available in black, pickled, or shot-blasted surface. |
| Unstable strength between batches | Mechanical test data recorded for each heat number. |
| No traceability for quality control | Each bundle labeled and traceable from the melting stage. |
Where Our Bars Are Used
Fastener Production
Used for screws, bolts, and nuts requiring stable strength.
Wire Rope Core
Applied in lifting ropes, connectors, and heavy hardware.
Machinery Parts
For shafts, gears, couplings, and pins in industrial equipment.
Tooling & Fixtures
For molds and fixtures in machining and assembly operations.
Shipbuilding
For decks, fittings, and corrosion-resistant hardware in marine construction.
Petrochemical & Power Plants
For reactor supports, heat exchanger shafts, and high-
Food & Medical Equipment
For hygienic, corrosion-resistant components and machine frames.
Automotive & Energy Systems
For axles, shafts, and transmission components under continuous load.
Standard Sizes and Grades
| Type | Size Range | Surface | Common Grades |
|---|---|---|---|
| Round Bar | 10–600 mm | Black / Pickled | 304, 316L, 321 |
| Flat Bar | thickness 3–200 mm × width 1.5–400 mm | Black / Pickled | 304, 316L, 430 |
| Square Bar | 10–180 mm | Black / Pickled | 304, 316, 410 |
Tensile Strength: 480–750 MPa | Elongation: ≥40% | Hardness: ≤200 HB
Standards: ASTM A276 / A484 or EN 10088 upon request.
Tolerance for Hot Rolled Round Bars
| Size (mm) | Group 1 | Group 2 | Group 3 |
|---|---|---|---|
| >7 ~ ≤20 | ±0.25 | ±0.35 | ±0.40 |
| >20 ~ ≤30 | ±0.30 | ±0.40 | ±0.50 |
| >30 ~ ≤50 | ±0.40 | ±0.50 | ±0.60 |
| >50 ~ ≤80 | ±0.60 | ±0.70 | ±0.80 |
| >80 ~ ≤110 | ±0.90 | ±1.00 | ±1.10 |
| >110 ~ ≤150 | ±1.20 | ±1.30 | ±1.40 |
Tolerance for Hot Rolled Flat Bars
| Size (mm) | Group 1 | Group 2 | Group 3 |
|---|---|---|---|
| >7 ~ ≤20 | ±0.25 | ±0.35 | ±0.40 |
| >20 ~ ≤30 | ±0.30 | ±0.40 | ±0.50 |
| >30 ~ ≤50 | ±0.40 | ±0.50 | ±0.60 |
| >50 ~ ≤80 | ±0.60 | ±0.70 | ±0.80 |
| >80 ~ ≤110 | ±0.90 | ±1.00 | ±1.10 |
| >110 ~ ≤150 | ±1.20 | ±1.30 | ±1.40 |
Tolerance for Hot Rolled Square Bars
| Size (mm) | Group 1 | Group 2 | Group 3 |
|---|---|---|---|
| >7 ~ ≤20 | ±0.25 | ±0.35 | ±0.40 |
| >20 ~ ≤30 | ±0.30 | ±0.40 | ±0.50 |
| >30 ~ ≤50 | ±0.40 | ±0.50 | ±0.60 |
| >50 ~ ≤80 | ±0.60 | ±0.70 | ±0.80 |
| >80 ~ ≤110 | ±0.90 | ±1.00 | ±1.10 |
| >110 ~ ≤150 | ±1.20 | ±1.30 | ±1.40 |
Tolerance for Hot Rolled Hexagon Bars
| Size (mm) | Group 1 | Group 2 | Group 3 |
|---|---|---|---|
| 8 ~ 20 | ±0.25 | ±0.35 | ±0.40 |
| 21 ~ 30 | ±0.30 | ±0.40 | ±0.50 |
| 30 ~ 50 | ±0.40 | ±0.50 | ±0.60 |
| 50 ~ 70 | ±0.60 | ±0.70 | ±0.80 |
Quality Control You Can Trust
- Each batch tested for tensile, yield, and elongation
- Surface and straightness inspection before shipment
- 100% MTC and heat-number traceability
- Third-party inspection (SGS, BV, TÜV etc.) accepted
- If inspection fails, the batch is scrapped and re-produced
We protect your project the same way we protect our reputation — by never letting a bad bar leave the factory.
Surface Options
- Black (as rolled): standard mill finish with oxide layer
- Pickled: clean surface for welding or coating
- Shot-blasted: matte, uniform finish for structure use
Packaging and Delivery
- Bundled with steel straps and wrapped with waterproof film
- Optional wooden pallets or steel racks for export
- Each bundle marked with grade, size, and heat number
- Delivery within 7–14 days after order confirmation
Why JCN Metal
- Factory in China with in-house hot rolling lines
- ISO 9001, SGS certified quality control
- Over 60 export countries served
- Flexible order quantity and quick response
- 100% inspection before shipment
Buying directly from JCNMetal means working with the factory that actually makes your bar — no agents, no excuses.
Let’s work together
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