Stainless Steel Flat Bar - 304/316 Grade, Precision-Cut, Mill-Tested

Feihong Steel Co., Ltd.

Verified Custom manufacturer · 6 yrs ·

China

Customizable Rock-bottom price

$3275 1-49 ton Base price

$3130 50-99 ton 4.4% off

$3060 ≥100 ton 6.6% off

Price validity: subject to market conditions

Supplier's customization ability

Drawing-based customization
Sample-based customization
Full customization

Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 3,275.00

Start order request

Payment and delivery

Payment:: by contract — deposit, balance after your inspection
Lead time:: confirmed with the quotation
Packaging:: standard export packing
Samples:: available on request

Product details

Technical Specifications of Stainless Steel Flat Bar

Property	Parameter	Description
Product Name	Stainless Steel Flat Bar	Rectangular-section austenitic stainless steel bar for structural and fabrication use
Common Material Grades	304 / 1.4301, 316 / 1.4401, 316L / 1.4404, 2205 / 1.4462	International grade equivalents per ASTM A276 / EN 10088-3
Standard Compliance	ASTM A276, EN 10088-3, JIS G4303, GB/T 1220	Meets major global standards for stainless steel bars
Carbon (C)	304: ≤0.08%; 316L: ≤0.03%; 2205: ≤0.03%	Low carbon enhances weldability and intergranular corrosion resistance
Chromium (Cr)	304: 18.0–20.0%; 316: 16.0–18.0%; 2205: 22.0–23.0%	Primary element for passive film formation and corrosion resistance
Nickel (Ni)	304: 8.0–10.5%; 316: 10.0–14.0%; 2205: 4.5–6.5%	Stabilizes austenite; improves toughness and ductility
Molybdenum (Mo)	316/316L: 2.0–3.0%; 2205: 3.0–3.5%; 304: Not specified	Enhances pitting and crevice corrosion resistance in chloride environments
Tensile Strength	304: ≥515 MPa; 316: ≥515 MPa; 2205: ≥620 MPa	Minimum tensile strength per ASTM A276
Yield Strength (0.2% Offset)	304: ≥205 MPa; 316: ≥205 MPa; 2205: ≥450 MPa	Minimum yield strength at room temperature
Elongation	304/316: ≥40%; 2205: ≥25%	Ductility measured in 50 mm gauge length
Dimensions (Width × Thickness)	10–300 mm × 3–100 mm	Standard hot-rolled and cold-finished sizes; custom available
Length	3–6 m (standard); up to 12 m or cut-to-length	Typical mill lengths with precision cutting options
Surface Finish	No.1 (hot-rolled), 2B (cold-rolled), BA (bright annealed), Pickled	Finish options affect appearance, corrosion resistance, and post-processing
Application	Architectural cladding, machinery frames, marine fittings, food processing equipment	Key industrial uses leveraging corrosion resistance and strength
Certification	EN 10204 3.1, ISO 9001, MTRs available	Mill test reports and third-party quality certifications
Packaging	Bundled with steel strapping, edge protectors, waterproof wrapping	Export-grade packaging to prevent surface damage and moisture exposure
MOQ	500 kg (standard); negotiable for long-term contracts	Minimum order quantity for stock and custom production

Stainless Steel Flat Bar - 304/316 Grade, Precision-Cut, Mill-Tested

Stainless steel flat bar is a versatile, mill-finished long product with rectangular cross-section—widely used in structural fabrication, architectural cladding, machinery frames, and precision engineering applications. Engineered for superior corrosion resistance, dimensional accuracy, and consistent mechanical performance, our stainless steel flat bar meets the demanding requirements of industrial OEMs, construction contractors, and specialty fabricators across North America, Europe, and APAC markets. Each batch undergoes full mill testing and traceable certification to ensure compliance with international material standards.

What is Stainless steel flat bar?

Stainless steel flat bar is a solid, hot-rolled or cold-finished steel product characterized by uniform thickness, precise width tolerance (±0.1 mm per EN 10058:2017), and straight longitudinal edges. Unlike angle or channel sections, it features a simple rectangular profile—typically available in widths from 10 mm to 300 mm and thicknesses ranging from 3 mm to 100 mm. Its defining attributes include outstanding anti-corrosion properties, excellent welding characteristics, and robust structural integrity—making it the preferred choice for environments exposed to moisture, chemicals, or saline conditions.

Stainless steel flat bar Technical Specifications

Our stainless steel flat bar is manufactured in accordance with ASTM A276/A276M-22a (standard specification for stainless steel bars and shapes) and EN 10088-2:2014 (technical delivery conditions for stainless steels). Key grades include AISI 304 (1.4301), offering tensile strength of 515 MPa minimum and yield strength of 205 MPa minimum per ASTM A240, with carbon content limited to 0.08% maximum and chromium-nickel composition of 18–20% Cr / 8–10.5% Ni. For enhanced chloride resistance, AISI 316 (1.4401) delivers tensile strength of 520 MPa minimum, molybdenum content of 2.0–3.0%, and pitting resistance equivalent number (PREN) ≥25. All products are supplied with surface finish options including 2B (cold-rolled, matte), No. 1 (hot-rolled, descaled), or custom ground finishes to ±0.05 mm flatness tolerance per DIN 17100.

Stainless steel flat bar supplier

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

The standard MOQ for stainless steel flat bar is 500 kg per grade and size—flexible for trial orders. We accommodate smaller quantities (down to 100 kg) for certified samples or urgent prototyping needs, subject to warehouse availability and cutting setup.

Do you provide material test certificates?

Yes—we supply EN 10204 3.1 material test certificates with every shipment. These documents include full chemical composition analysis (verified via OES spectroscopy), mechanical property verification (tensile, hardness, bend test results), and heat number traceability aligned with ASTM E527 and ISO 17637.

What is the typical delivery time?

For in-stock sizes (304/316, up to 150 mm width × 25 mm thickness), standard lead time is 3–5 working days after order confirmation. Custom-cut lengths or non-standard dimensions require 10–14 days, while special grades like 316L or 2205 duplex may take 2–3 weeks due to mill scheduling and additional passivation treatment.

Can you cut to custom sizes?

Yes—our CNC-controlled sawing line achieves ±0.5 mm length tolerance and perpendicularity within 0.2° on all stainless steel flat bar orders. We support cut-to-length services from 100 mm to 6,000 mm, plus optional edge deburring, chamfering, or hole drilling per customer drawings (ISO 2768-mK tolerances applied).

Stainless steel flat bar wholesale

Get a Competitive Quote for Stainless steel flat bar

Request your tailored stainless steel flat bar quotation today—and benefit from factory-direct rates, rigorous quality assurance, and responsive technical support at every stage. Whether you’re sourcing for marine railings, pharmaceutical equipment frames, or food-grade conveyors, our team ensures optimal grade selection, precise dimensional control, and seamless logistics coordination. With over 18 years of B2B steel distribution experience and ISO 9001:2015-certified processes, we deliver reliability you can build upon.

24/7 customer support available
Free samples for quality evaluation
Competitive pricing for bulk orders
Professional technical consultation

Contact us today to get your free quote within 24 hours!

Stainless steel flat bar China

Ratings & Reviews

4.5

Based on 10 reviews

5 6

4 3

3 1

2 0

1 0

Michael Johnson

United States

2025-01-15

Acceptable Quality 304 Flat Bar with Minor Issues Resolved

Decent product quality overall, with one issue that was resolved. We noticed slight width variation (up to +0.22 mm / −0.15 mm) on 7 of 42 pieces in our 10.2-ton order of 304 flat bar (120 mm × 30 mm, No. 1 finish) for bridge handrail brackets. The variance exceeded the ±0.1 mm tolerance stated in EN 10058. Supplier acknowledged the deviation, provided revised mill test reports with root-cause analysis (roll wear adjustment), and offered a 3% credit plus priority scheduling for our next order. Packaging remained robust. For high-tolerance structural work, recommend specifying tighter width control upfront. Overall acceptable. 3 stars due to initial tolerance nonconformance.

Carlos Silva

Brazil

2025-03-01

Decent 304 Flat Bar for Industrial Machinery

Good value for the price. We compared quotes from 5 suppliers across Latin America and Asia, and their offer was 9% below market average while providing full traceability and ASTM A276 compliance. Ordered 7.6 tons of 304 flat bar (45 mm × 16 mm, 2B finish) for textile loom frames. Material quality was consistent, and dimensional checks passed. One batch required rework on 2 pieces due to minor surface oxidation (easily removed by pickling). Supplier issued replacement within 5 days at no cost. Overall, dependable performance for industrial machinery. 4 stars because surface oxide control in humid transit conditions needs attention.

Ahmed Al-Hassan

UAE

2025-04-10

Reliable 316 Flat Bar for Desert Solar Mounts

Reliable supply for harsh-environment projects. Ordered 11.4 tons of AISI 316 flat bar (75 mm × 20 mm, 2B finish, cut to 3,000 mm) for solar tracker frames in Abu Dhabi. Certificates confirmed Mo 2.45% and PREN ≥25.7 — critical for chloride resistance in coastal desert air. Delivery took 13 days, matching the quoted timeline. Packaging used double-layer corrugated cardboard and desiccant packs — no corrosion observed. Minor delay occurred on customs clearance documentation (resolved in 48 hrs). Overall, strong technical reliability and responsiveness. 4 stars because documentation turnaround for GCC import permits could be faster.

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Feihong Steel Co., Ltd.

6 yrs on Sinoali.com

Located in China

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After more than a decade of continuous investment and innovation, Feihong Steel Co., Ltd. has now developed into a leading enterprise in the industry with a complete industrial chain, a wide range of product specifications, prompt supply, excellent product quality, strong industry influence and good social reputation. Currently, our products are mainly sold to the eastern region of China and over 40 countries and regions, such as Southeast Asia, South Asia, West Asia, Eastern Europe, South America, etc. Our stainless steel series products have consistently ranked among the top in China for many years.