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Grades: SS 304, 304L, 316, 316L, 310, 321 | Export Quality Square Bars
Inox Steel India is a reliable manufacturer, supplier, stockist, and exporter of stainless steel square bars in India, offering premium-quality square bars in SS 304, 304L, 316, 316L, 310, and 321 for domestic and international engineering industries. Our stainless steel square bars are supplied to OEM manufacturers, fabrication units, machining workshops, infrastructure projects, and industrial plants across India, GCC countries, Africa, Europe, and the Americas.
Stainless steel square bars are widely used where strength, dimensional accuracy, corrosion resistance, and machining precision are critical. Compared to round bars and flat bars, square bars provide better edge definition, higher torsional stability, and uniform load distribution, making them ideal for structural frameworks, CNC-machined components, shafts, couplings, and fabricated assemblies.
All square bars supplied by Inox Steel India are manufactured in compliance with ASTM A276 / ASTM A479 standards, ensuring consistent metallurgical properties, superior surface finish, and long-term performance in demanding service conditions.
A stainless steel square bar is a solid long product with a square cross-section, produced from austenitic stainless steel grades and supplied in hot rolled, bright drawn, forged, or polished form. These bars are designed to deliver excellent mechanical strength, corrosion resistance, and fabrication flexibility across a wide range of industrial applications.
Stainless steel square bars are preferred in industries where components are exposed to:
Because of their uniform geometry, square bars are especially suitable for precision machining and fabrication, offering clean edges and predictable material behavior during cutting, drilling, and welding operations.
At Inox Steel India, stainless steel square bars are produced using controlled manufacturing and finishing processes to meet strict dimensional and quality requirements.
Manufacturing Process Overview:
This process results in square bars with excellent straightness, consistent dimensions, and superior machinability.
Stainless steel square bars offer significant advantages over carbon steel and alloy steel bars, especially in corrosive and demanding environments:
These benefits make stainless steel square bars a preferred choice for machining, fabrication, structural assemblies, and forging stock.
Inox Steel India supplies stainless steel square bars in multiple austenitic grades to suit different service environments:
SS 304 / 304L Square Bars
Used for general engineering, fabrication, food processing, and architectural applications.
304L is preferred for welded fabrication due to reduced carbon content.
SS 316 / 316L Square Bars
Molybdenum-bearing grade offering superior resistance to chlorides and chemicals.
Ideal for marine, chemical, and pharmaceutical equipment.
SS 310 Square Bars
Designed for high-temperature and oxidation-resistant applications such as furnaces and heat treatment equipment.
SS 321 Square Bars
Titanium-stabilized grade suitable for high-temperature service where weld stability and creep resistance are required.
MASTER TECHNICAL DATASHEET – STAINLESS STEEL SQUARE BARS
| Parameter | SS 304 / 304L | SS 316 / 316L | SS 310 | SS 321 |
|---|---|---|---|---|
| Material Category | Austenitic Stainless Steel | Austenitic Stainless Steel (Mo-bearing) | Heat Resistant Stainless Steel | Stabilized Austenitic Stainless Steel |
| UNS Number | S30400 / S30403 | S31600 / S31603 | S31000 | S32100 |
| ASTM Specification | ASTM A276 / A479 | ASTM A276 / A479 | ASTM A276 / A479 | ASTM A276 / A479 |
| EN Equivalent | 1.4301 / 1.4307 | 1.4401 / 1.4404 | 1.4841 | 1.4541 |
| Density | 7.9 g/cm³ | 8.0 g/cm³ | 7.9 g/cm³ | 7.9 g/cm³ |
| Tensile Strength | ≥ 515 MPa | ≥ 515 MPa | ≥ 520 MPa | ≥ 515 MPa |
| Yield Strength | ≥ 205 MPa | ≥ 205 MPa | ≥ 205 MPa | ≥ 205 MPa |
| Elongation | ≥ 40 % | ≥ 40 % | ≥ 40 % | ≥ 40 % |
| Hardness | ≤ 201 HB | ≤ 217 HB | ≤ 217 HB | ≤ 217 HB |
| Corrosion Resistance | Good (General) | Excellent (Chloride & Chemical) | Moderate | Good |
| Temperature Resistance | Up to 870 °C | Up to 870 °C | Up to 1100 °C | Up to 870 °C |
| Weldability | Excellent | Excellent | Good | Excellent |
| Magnetic Property | Non-Magnetic | Non-Magnetic | Non-Magnetic | Non-Magnetic |
| Surface Finish | Hot Rolled / Bright / Polished | Hot Rolled / Bright / Polished | Hot Rolled / Bright | Hot Rolled / Bright |
| Manufacturing Process | Hot Rolled / Cold Drawn / Forged | Hot Rolled / Cold Drawn / Forged | Hot Rolled / Forged | Hot Rolled / Forged |
| Size Range (Square) | 6 mm – 150 mm | 6 mm – 150 mm | 8 mm – 120 mm | 8 mm – 120 mm |
| Length | Random / Fixed / Cut Length | Random / Fixed / Cut Length | Random / Fixed | Random / Fixed |
| Dimensional Tolerance | As per ASTM / EN | As per ASTM / EN | As per ASTM | As per ASTM |
| Testing | PMI, Chemical, Mechanical | PMI, Chemical, Mechanical | PMI, Mechanical | PMI, Mechanical |
| Certification | EN 10204 3.1 / 3.2 | EN 10204 3.1 / 3.2 | EN 10204 3.1 | EN 10204 3.1 |
| HSN / HS Code | 7222.20.11 | 7222.20.11 | 7222.20.19 | 7222.20.19 |
| Typical Applications | Machining, Fabrication, Structural | Marine, Chemical, Pharma | Furnaces, Heat Treatment | High-Temp Fabrication |
Before selecting stainless steel square bars, buyers and engineers should consider:
Choosing the correct grade and finish ensures better performance, reduced downtime, and long-term cost efficiency.
This block focuses on engineering data, buyer-commercial clarity, and procurement-ready information for stainless steel square bars supplied by Inox Steel India. The intent here is to help purchase managers, project engineers, and OEM buyers quickly evaluate size, weight, price, and suitability.
Inox Steel India supplies stainless steel square bars in standard market sizes as well as custom-cut lengths to meet machining, fabrication, and structural requirements.
Standard Square Bar Sizes (mm)
6 mm | 8 mm | 10 mm | 12 mm | 16 mm | 20 mm | 22 mm | 25 mm | 30 mm | 32 mm | 35 mm | 40 mm | 45 mm | 50 mm | 60 mm | 65 mm | 70 mm | 75 mm | 80 mm | 100 mm | 120 mm | 150 mm
Length: Random length (3–6 m) or custom cut lengths
Tolerance: As per ASTM A276 / A479
Finish Options: Hot Rolled (Black), Bright Drawn, Ground, Polished
Sizes like 12mm stainless steel square bar are regularly stocked for machining and fabrication use.
The below stainless steel square bar weight chart helps buyers estimate material requirement and cost accurately.
(Density considered: ~7.9 g/cm³)
| Square Size (mm) | Weight (kg/m) |
|---|---|
| 6 × 6 | 0.28 |
| 8 × 8 | 0.50 |
| 10 × 10 | 0.79 |
| 12 × 12 | 1.13 |
| 16 × 16 | 2.02 |
| 20 × 20 | 3.16 |
| 25 × 25 | 4.94 |
| 30 × 30 | 7.11 |
| 40 × 40 | 12.64 |
| 50 × 50 | 19.75 |
| 65 × 65 | 33.36 |
| 75 × 75 | 44.44 |
| 100 × 100 | 79.00 |
This chart is widely used for:
Cost estimation
Project BOQ preparation
Weight-based pricing (price per kg)
Stainless steel square bar prices depend on grade, size, finish, and quantity. Below is an indicative stainless steel square bar price per kg for standard sizes.
Price Range (FOB India – Indicative)
| Grade | Approx. Price / Kg (INR) | Typical Use |
|---|---|---|
| SS 304 | ₹ 235 – ₹ 290 | General engineering, fabrication |
| SS 304L | ₹ 240 – ₹ 295 | Welded fabrication |
| SS 316 | ₹ 310 – ₹ 380 | Marine, chemical |
| SS 316L | ₹ 320 – ₹ 395 | Pharma, corrosive service |
| SS 310 | ₹ 480 – ₹ 620 | High-temperature |
| SS 321 | ₹ 420 – ₹ 540 | Heat-resistant fabrication |
Examples:
SS 304 square bar price per kg varies with size and finish
12mm square bar price in India is commonly quoted per kg based on bright or black finish
Prices are indicative and fluctuate with nickel prices, finish, and order volume.
HSN Code (India): 7222.20.11
HS Code (Export): 7222.20
This classification applies to stainless steel bars and rods, hot rolled or cold drawn, used for domestic billing and international export documentation.
Every stainless steel square bar supplied by Inox Steel India undergoes strict quality checks to ensure compliance with ASTM and EN standards.
Standard Tests Conducted:
Certification:
Stainless steel square bars are widely used across industries due to their strength, corrosion resistance, and machinability.
Buyers choose Inox Steel India not just for material availability, but for technical reliability and long-term supply confidence.
Our Key Strengths:
Our focus is to ensure consistent quality, accurate delivery timelines, and responsive technical support for every order.
| Industry | Application | Preferred Grade |
|---|---|---|
| Engineering & OEM | CNC parts, shafts, couplings | SS 304 / 304L |
| Fabrication & Infrastructure | Frames, supports, structures | SS 304 / 316 |
| Marine & Offshore | Coastal & saline environments | SS 316 / 316L |
| Chemical & Pharma | Process equipment, fixtures | SS 316L |
| Power & Heat Treatment | Furnaces, thermal systems | SS 310 / 321 |
| Forging Units | Forging stock | SS 304 / 316 |
All stainless steel square bars are packed as per domestic and international shipping standards to ensure damage-free delivery.
Packing Details:
Regular export destinations include UAE, Saudi Arabia, Oman, Qatar, Nigeria, South Africa, Germany, Italy, and the USA.
Whether you need SS 304 square bars for fabrication, SS 316 for marine use, or SS 310 for high-temperature applications, our technical sales team is ready to assist.
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
steel@inoxsteelindia.in
+91 9930796690
SS 304 square bar price generally ranges between ₹235 – ₹290 per kg, depending on size, finish, and quantity. Yes, we supply bright drawn, ground, and polished square bars for machining and precision applications. SS 316 / 316L square bars are recommended for marine and chloride-rich environments. The HSN code is 7222.20.11 for stainless steel bars and rods. Yes, we provide custom cut lengths as per drawing or machining requirement. Yes, Inox Steel India exports stainless steel square bars to GCC, Africa, Europe, and the Americas. What is the price of SS 304 square bar per kg in India?
Do you supply stainless steel square bars in bright finish?
Which grade is best for marine applications?
What is the HSN code for stainless steel square bars?
Can you supply custom cut lengths?
Do you export stainless steel square bars?
Inox Steel India is a leading manufacturer and supplier of stainless steel square bars (304, 316, 310, 321). Get best price per kg, weight chart, and certified stock in India.