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Stainless Steel Flat Bar Supplier - Custom Sizes
China
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 Ton
Shipping total: To be negotiated
- 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 | Hot rolled or cold drawn flat bar in stainless steel grades |
| Material Grade | 304 / 304L / 316 / 316L / 310S / 321 / 430 | 304 ≈ 1.4301 (EN) ≈ SUS304 (JIS); 316L ≈ 1.4404 (EN) ≈ SUS316L (JIS) |
| Standard Compliance | ASTM A276 / A484; EN 10088-3; JIS G4303; GB/T 1220 | Covers chemical composition, mechanical properties and dimensional tolerances |
| Chemical Composition (304) | C ≤0.08%, Mn ≤2.0%, Si ≤1.0%, Cr 18.0–20.0%, Ni 8.0–10.5%, P ≤0.045%, S ≤0.030% | Per ASTM A276 / EN 10088-3 for Grade 304 |
| Chemical Composition (316L) | C ≤0.03%, Cr 16.0–18.0%, Ni 10.0–14.0%, Mo 2.0–3.0%, Mn ≤2.0%, Si ≤1.0% | Low carbon grade for improved corrosion resistance and weldability |
| Tensile Strength | ≥515 MPa (304); ≥485 MPa (316L) | Per ASTM A276; hot rolled condition |
| Yield Strength | ≥205 MPa (304); ≥170 MPa (316L) | 0.2% proof stress per ASTM A276 |
| Elongation | ≥40% (304); ≥40% (316L) | Measured in 50 mm gauge length per ASTM A276 |
| Hardness | ≤187 HBW (304 annealed); ≤217 HBW (316L annealed) | Brinell hardness in annealed / solution-treated condition |
| Width Range | 10 mm – 300 mm | Custom widths available upon request |
| Thickness Range | 3 mm – 100 mm | Tolerances per EN 10058 or ASTM A484 |
| Length | Standard: 3 m, 6 m; Custom: up to 12 m | Fixed or random lengths; cut-to-length service available |
| Surface Finish | No.1 (Hot Rolled Annealed Pickled); No.2D / 2B (Cold Rolled); BA; Brushed (No.4) | Surface selected based on application and aesthetic requirements |
| Application | Structural fabrication, food processing equipment, chemical industry, marine fittings, architectural trim, oil & gas | Suitable for corrosive and high-temperature environments |
| Certification | Mill Test Certificate (MTC) per EN 10204 3.1 / 3.2; ISO 9001:2015; PED 2014/68/EU | Full traceability documentation provided with each shipment |
| Packaging | Bundled with steel strapping; wooden pallet or wooden case for export | Rust-proof paper or plastic film wrapping to prevent surface damage |
| MOQ | 1 Ton (standard grades); 5 Tons (special grades or custom dimensions) | Mixed grades accepted to meet MOQ; spot stock available for 304 and 316L |
Stainless Steel Flat Bar
Stainless steel flat bar is one of the most versatile and widely used structural steel products across industries ranging from construction and manufacturing to marine engineering and food processing. With its combination of high strength, excellent corrosion resistance, and clean aesthetic finish, this product has become a go-to material for engineers, fabricators, and builders worldwide. As a dedicated supplier, we offer custom sizes and grades to meet the precise demands of every project.
What Is a Stainless Steel Flat Bar?
A stainless steel flat bar is a long, rectangular section of stainless steel with a flat surface and uniform thickness. It is produced through hot rolling or cold drawing processes, resulting in a product with consistent dimensions and superior surface quality. Unlike standard carbon steel bars, stainless flat bars contain a minimum of 10.5% chromium, which forms a passive oxide layer that protects the metal from rust, staining, and chemical attack.
These bars are available in a wide range of widths and thicknesses, making them suitable for both structural load-bearing applications and decorative or finishing uses. Common surface finishes include No. 1 (hot rolled), No. 2B (cold rolled), No. 4 (brushed), and mirror polish, each serving different functional and aesthetic requirements.
Grades and Specifications of Stainless Steel Flat Bars
We supply stainless steel flat bars in the most popular and industry-standard grades to accommodate diverse application needs:
- Grade 304: The most commonly used austenitic stainless steel, offering excellent corrosion resistance in most environments. Ideal for architectural, food-grade, and general fabrication applications.
- Grade 316: Contains molybdenum for enhanced resistance to chlorides and marine environments. Preferred in chemical processing, offshore, and coastal construction projects.
- Grade 430: A ferritic stainless steel with good corrosion resistance and formability, commonly used in automotive trim and kitchen appliances.
- Grade 2205 Duplex: Combines austenitic and ferritic properties for exceptional strength and pitting resistance, suited for high-pressure and high-stress environments.
Standard dimensions typically range from 10mm to 300mm in width and 2mm to 50mm in thickness, with lengths available from 1 meter to 12 meters. Custom cutting and processing services are available upon request to eliminate waste and reduce fabrication time on-site.
Key Applications of Stainless Steel Flat Bar
The broad mechanical and chemical properties of stainless flat bars make them indispensable across multiple sectors:
- Construction & Architecture: Used as structural supports, lintels, brackets, handrail components, and decorative trims in both residential and commercial buildings.
- Marine & Offshore: Grade 316 flat bars resist saltwater corrosion, making them ideal for boat fittings, dock hardware, and offshore platform structures.
- Food & Beverage Processing: Hygienic, easy-to-clean surfaces meet strict sanitary standards for processing equipment frames, conveyor supports, and storage racks.
- Chemical & Petrochemical: Withstands aggressive chemicals and elevated temperatures in plant equipment, piping supports, and reactor components.
- Automotive & Transportation: Lightweight yet strong flat bars are used in vehicle frames, exhaust supports, and interior trim components.
Why Choose Our Stainless Steel Flat Bar Products?
As an experienced stainless steel flat bar supplier, we are committed to delivering products that meet international standards including ASTM A276, EN 10088, and JIS G4303. Our manufacturing process ensures tight dimensional tolerances, consistent mechanical properties, and traceable material certifications for every order.
We offer flexible order quantities — from small custom cuts for prototype projects to large bulk orders for industrial-scale procurement. Our in-house processing capabilities include precision cutting, polishing, and edge finishing to deliver ready-to-use flat bars that save time and labor costs for our clients.
Whether you need a standard off-the-shelf size or a fully customized stainless steel flat bar solution, our technical team is ready to assist with material selection, dimensional specifications, and delivery logistics. Contact us today to request a quote or discuss your project requirements.
