SS Flat
What are SS Flats?
Stainless Steel Flat, also known as flat bar, is a rectangular section of stainless steel with a consistent thickness and width. It is widely used in structural supports, brackets, frameworks, and architectural applications due to its strength, corrosion resistance, and ease of fabrication.
Asiad Steel Industries is a trusted manufacturer and exporter of premium Stainless Steel Flats in grades like SS 304, SS 316, SS 321, SS 310, and more. Our stainless steel flats are available in various thicknesses and widths to cater to fabrication, industrial, and construction demands globally.
Key Features
High
Strength
Durable
Construction
Precision
Finish
Wide
Compatibility
Corrosion
Resistant
Specifications
| Specification Category | Parameter / Feature | Details / Options |
|---|---|---|
| Size Range | Nominal Size (Width × Thickness) | 10×5 mm to 500×50 mm (custom sizes available) |
| Pressure Ratings | ANSI / ASME Class | Class 150, 300, 600, 900, 1500, 2500 |
| PN Ratings | PN6, PN10, PN16, PN25, PN40, PN64 | |
| Flat Types | SS Rectangle Flat | Standard flat bars, high-strength applications |
| Material Options | Stainless Steel | SS 304, SS 304L, SS 316, SS 316L, SS 321 |
| Carbon Steel | ASTM A36, ASTM A500 Grade B | |
| Alloy / Superalloy | Alloy Steel (A234 WP1, WP5, WP9, WP11, WP22, WP91), Inconel 600/625/825 | |
| Duplex & Super Duplex | Duplex 2205, Super Duplex 2507 | |
| Other Materials | Monel 400/K500, Nickel 200/201, Titanium (Grade 2, Grade 5) | |
| Standards & Certifications | ASME / ANSI | ASME B36.10 (CS), ASME B36.19 (SS) |
| ASTM | ASTM A484, ASTM A276, ASTM A479 | |
| European Standards | EN 10088, EN 10278 | |
| Certifications | ISO 9001, PED 2014/68/EU, NACE MR0175, IBR Approved | |
| Design Features | Width & Thickness | As per standard, customized options available |
| Tolerance | As per ASME / EN / ASTM standards | |
| Coating & Surface Finish | Anti-Corrosion Coating | Rust Preventive Oil, Black Oxide, Hot-Dip Galvanized |
| Optional Coatings | Epoxy, PTFE, Polyurethane | |
| Surface Finish | Machined, Pickled, Polished, Passivated | |
| Testing & Inspection | Pressure Testing | Hydrostatic, Pneumatic |
| Non-Destructive Testing | Radiography (RT), Ultrasonic (UT), Magnetic Particle (MPI), Dye Penetrant (DPT) | |
| Destructive Testing | Tensile, Hardness, Impact |
Dimensions
| Width (mm) | Thickness (mm) | Standard Length (mm) | Tolerance (± mm) | Surface Finish Options | Material Types | Additional Features |
|---|---|---|---|---|---|---|
| 100 | 1 – 3 | 1000 – 6000 | 0.2 – 0.5 | 2B, Pickled, Polished, Matt, Mirror, Coloured | SS 304, SS 316, SS 321 | Cold Rolled |
| 200 | 2 – 6 | 1000 – 6000 | 0.2 – 0.5 | 2B, Pickled, Polished, Matt, Mirror, Coloured | SS 304, SS 316, SS 321 | Hot Rolled |
| 300 | 3 – 10 | 1000 – 6000 | 0.3 – 0.6 | 2B, Pickled, Polished, Matt, Mirror, Coloured | SS 304, SS 316, SS 321 | Annealed |
| 400 | 4 – 12 | 1000 – 6000 | 0.3 – 0.6 | 2B, Pickled, Polished, Matt, Mirror, Coloured | SS 304, SS 316, SS 321 | Tempered |
| 500 | 5 – 15 | 1000 – 6000 | 0.4 – 0.8 | 2B, Pickled, Polished, Matt, Mirror, Coloured | SS 304, SS 316, SS 321 | Cold Rolled |
| 600 | 6 – 20 | 1000 – 6000 | 0.4 – 1.0 | 2B, Pickled, Polished, Matt, Mirror, Coloured | SS 304, SS 316, SS 321 | Hot Rolled |
| 800 | 8 – 25 | 1000 – 6000 | 0.5 – 1.0 | 2B, Pickled, Polished, Matt, Mirror, Coloured | SS 304, SS 316, SS 321 | Annealed |
| 1000 | 10 – 30 | 1000 – 6000 | 0.5 – 1.2 | 2B, Pickled, Polished, Matt, Mirror, Coloured | SS 304, SS 316, SS 321 | Tempered |
| 1200 | 12 – 40 | 1000 – 6000 | 0.5 – 1.5 | 2B, Pickled, Polished, Matt, Mirror, Coloured | SS 304, SS 316, SS 321 | Hot Rolled |
| 1500 | 15 – 50 | 1000 – 6000 | 0.5 – 2.0 | 2B, Pickled, Polished, Matt, Mirror, Coloured | SS 304, SS 316, SS 321 | Annealed |
Mechanical Properties
| Property | Value | Unit / Standard |
|---|---|---|
| Tensile Strength | 485 – 750 | MPa (SS 304, SS 304L, SS 316, SS 316L, SS 321) |
| Yield Strength | 170 – 450 | MPa |
| Hardness | 120 – 200 | HB (Brinell) |
| Elongation | ≥ 20 – 30 | % |
| Density | 7.8 – 8.0 | g/cm³ |
| Impact Toughness | ≥ 27 – 70 | J (Charpy, grade-dependent) |
| Modulus of Elasticity (E) | ~200 | GPa |
| Fatigue Strength | 250 – 450 | MPa |
| Corrosion Resistance | Excellent | – |
| Thermal Conductivity | 15 – 50 | W/m·K |
| Coefficient of Thermal Expansion | 11 – 17 ×10⁻⁶ | /°C |
| Yield Ratio (YS/UTS) | 0.40 – 0.65 | – |
| Poisson’s Ratio | 0.27 – 0.30 | – |
| Brinell Hardness Range | 120 – 200 | HB |
| Surface Finish | 2B, Pickled, Polished, Matt, Mirror, Coloured | – |
| Processing Type | Cold Rolled, Hot Rolled, Annealed, Tempered | – |
| Operating Temperature Range | -46 to 600 | °C (material-dependent) |
| Typical Applications | Architectural, Industrial, Marine, Decorative | – |
Chemical Composition
| Element | SS 304 (%) | SS 304L (%) | SS 316 (%) | SS 316L (%) |
|---|---|---|---|---|
| Carbon (C) | ≤ 0.08 | ≤ 0.03 | ≤ 0.08 | ≤ 0.03 |
| Manganese (Mn) | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 |
| Chromium (Cr) | 18.0 – 20.0 | 18.0 – 20.0 | 16.0 – 18.0 | 16.0 – 18.0 |
| Nickel (Ni) | 8.0 – 10.5 | 8.0 – 12.0 | 10.0 – 14.0 | 10.0 – 14.0 |
| Molybdenum (Mo) | — | — | 2.0 – 3.0 | 2.0 – 3.0 |
| Nitrogen (N) | — | — | ≤ 0.10 | ≤ 0.10 |
| Iron (Fe) | Balance | Balance | Balance | Balance |
Applications of SS Flats
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What’s the difference between hot rolled and cold drawn SS flat?
Can stainless steel flat be bent or formed easily?
Are SS flats corrosion-resistant in coastal environments?
Do you supply custom-cut SS flat bars?
