Ratnakar Steel India is a leading manufacturer of high-quality **Stainless Steel Flat Bars**, offering superior structural support and aesthetic appeal for architectural and industrial projects. Our flat bars are precision-cut and finished to ensure perfect alignment and corrosion resistance in challenging environments.

Engineering & Structural Analysis

We provide flat bars in both HRAP (Hot Rolled Annealed Pickled) and cold-drawn conditions, focusing on edge precision and surface uniformity to meet global engineering standards.

  • Size Range: Width 10mm to 200mm | Thickness 3mm to 40mm
  • Material Grades: 304, 304L, 316, 316L, 310S, 321, 410, 430
  • Standard Compliance: ASTM A276, ASTM A484, and EN 10058
  • Processing: Shearing and Edging, HRAP, and Mirror Polishing

Stainless Steel Flat Bar Technical Data

Size & Geometry
WIDTH: 10mm to 200mm THICKNESS: 3mm to 40mm SHAPE: Rectangular / Flat Section EDGE: Sheared & Edged, Rolled, or Machined
Available Grades
AUSTENITIC: 304, 304L, 316, 316L, 310S, 317L, 321, 347 FERRITIC/MARTENSITIC: 409, 410, 430, 431 SPECIALTY: Duplex 2205, Super Duplex 2507, Alloy 20
Technical Ratings
TENSILE STRENGTH: 515 to 750 Mpa YIELD STRENGTH: 205 Mpa Min FLATNESS: 1.5mm per meter Max deviation
Surface Finish & Condition
FINISH: HRAP (Hot Rolled Annealed Pickled), Cold Drawn, Polished, No.4 Finish CONDITION: Solution Annealed, Pickled, Mirror Buffed
Key Applications
Structural Braces & Frameworks Architectural Trim & Moldings Base Plates & Flanges Kitchenware & Decorative Hardware
Testing & Compliance
STANDARDS: ASTM A276, A484, ASTM A666 TESTING: Bending Test, Hardness, Microstructure, PMI CERTIFICATION: MTC as per EN 10204 3.1

Our Production Workflow

Our manufacturing process focuses on achieving the ideal width-to-thickness ratio while ensuring the steel retains its mechanical properties during cutting and finishing operations.

01. Grade Selection

Selecting specific alloys based on required yield strength and oxidation resistance for the final structure.

02. Precision Edging

Utilizing advanced shearing and edging techniques to ensure straightness and smooth, burr-free edges.

03. Quality Testing

Rigorous checks for dimensional tolerance, flatness, and surface finish before final dispatch.