Our stainless steel square bar and flat bar are available in a variety of grades including 303, 304L, 316L, 316Ti, 321, 409, 410, 430F, 17-4 PH/630, and other austenitic, ferritic, martensitic, and duplex steels—each tailored to meet specific engineering needs. Whether for structural frameworks, engineering assemblies, high-load supports, or high-performance components, our products are produced to meet international quality standards and customer-specific specifications.
The strength and corrosion resistance of our stainless steel square and flat bars come directly from their precise chemical composition and advanced metallurgical properties. For example, Grade 304 Square & Flat Bar contains 18% chromium and 8% nickel, delivering excellent tensile strength and moderate resistance to general atmospheric corrosion. On the other hand, Grade 316 Square & Flat Bar includes 16% chromium, 10% nickel, and 2% molybdenum, which offers enhanced protection in chloride-rich, chemical-processing, and marine environments. Austenitic stainless steels are especially favored for their toughness and formability, making them suitable for a wide range of demanding applications.
At Mukund Steels, we also offer complete customization options in size, shape, length, and finish, ensuring that our stainless steel square and flat bars align perfectly with your specific project or component application. Backed by decades of metallurgical expertise and advanced manufacturing capabilities, Mukund Steels continues to deliver stainless steel solutions that stand the test of time.
Looking for details on applications, grades, and sizes? Read our detailed buying guide to choose the right material. We make customized HRAP stainless steel bars to meet the clients’ industry-specific needs. Please find the detailed product specifications below.
Square & Flat Bar Product Specifications
| Feature Parameter | Standard Specifications & Size Limits |
|---|---|
| Size Range | 12 mm – 65 mm (0.47 inch - 2.55 inch) |
| Size Tolerances | h10 and h11 |
| Length | 2 metres – 6 metres |
| Chamfering | Available in 30° to 60° through fully automatic both-end chamfering machine |
| Crack Test | Magnetic Particle Inspection (MPI) for absolute micro-structural surface integrity |
| Ultrasonic Test | 100% tested through Digital Ultrasonic Flaw Detector, as per ASTM A-388, EN 10308 (class 1 to 4), API 6A/ISO 10423:2003-PSL 3, SEP 1920:1984 (class A, B, C), MIL STD 2154 |
| Length Tolerance | Available in special cut to length bars in tolerance –0/+10 mm (-0/+0.5 inch) |
| Surface Finish | Cold drawn condition and Belt polished condition |
| Heat Treatment | Solution Annealed, Annealed |
| Grades (AISI) | AISI: 303, 304L, 316L, 316Ti, 321, 409, 410, 430F, 17-4 PH/630 |
| Grades (DIN / EN) | DIN: 1.4305, 1.4307, 1.4404, 1.4571, 1.4541, 1.4006, 1.4104, 1.4016, 1.4542 |
Outstanding Properties Validation
The major factors that validate the outstanding properties of our custom processed square and flat bars are:
- Chemical Composition & Mechanical Properties: Thoroughly certified element balance to maximize durability, strength, and machinability characteristics.
- Latest Technology Process: Processed in our highly controlled Managed Metallurgical Operations utilizing active sizing systems.
- Internal Defect Prevention: 100% free from structural micro-voids, cracks, or integrity defects through non-destructive testing methodology.