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Inox Steel India is a reliable manufacturer, supplier, and exporter of Stainless Steel Round Bars in austenitic grades 304, 304L, 316, 316L, 310, 321, and 347, manufactured and supplied in accordance with ASTM A276 / ASTM A479 standards
Our stainless steel round bars are supplied to engineering, machining, oil & gas, marine, power, and fabrication industries across India and international markets including GCC, Middle East, Africa, Europe, and the Americas.
With consistent stock availability in standard and custom diameters, Inox Steel India supports both OEM production requirements and project-based bulk supply, offering mill-tested material with complete traceability.
Stainless steel round bars are solid cylindrical metal products widely used for machining, shafting, fasteners, structural components, and precision-engineered parts. Unlike hollow sections, round bars provide uniform strength, superior machinability, and high load-bearing capacity.
At Inox Steel India, stainless steel round bars are manufactured using controlled metallurgical processes to ensure dimensional accuracy and consistent mechanical properties.
This process ensures stainless steel round bars suitable for critical service conditions involving corrosion, pressure, and temperature variations.
These characteristics make stainless steel round bars a preferred raw material for industrial manufacturing and heavy engineering applications.
Inox Steel India supplies stainless steel round bars in the following grades and specifications:
Applicable Standards: ASTM A276 / ASTM A479 | EN equivalents available on request.
| Parameter | SS 304 | SS 304L | SS 316 | SS 316L | SS 310 | SS 321 | SS 347 |
|---|---|---|---|---|---|---|---|
| Product Form | Solid Round Bar | Solid Round Bar | Solid Round Bar | Solid Round Bar | Solid Round Bar | Solid Round Bar | Solid Round Bar |
| Standard | ASTM A276 / A479 | ASTM A276 / A479 | ASTM A276 / A479 | ASTM A276 / A479 | ASTM A276 / A479 | ASTM A276 / A479 | ASTM A276 / A479 |
| UNS No. | S30400 | S30403 | S31600 | S31603 | S31000 | S32100 | S34700 |
| Manufacturing Process | Hot Rolled / Bright Drawn / Forged | Hot Rolled / Bright Drawn | Hot Rolled / Bright Drawn | Hot Rolled / Bright Drawn | Hot Rolled | Hot Rolled / Bright | Hot Rolled / Bright |
| Diameter Range (mm) | 5 – 500 mm | 5 – 500 mm | 5 – 450 mm | 5 – 450 mm | 6 – 300 mm | 6 – 350 mm | 6 – 350 mm |
| Standard Sizes | 5, 6, 8, 10, 12, 14, 16, 20, 25, 32, 40 mm | Same as 304 | Same as 304 | Same as 304 | Project-based | Project-based | Project-based |
| Length | Random / Cut-to-Length | Random / Cut-to-Length | Random / Cut-to-Length | Random / Cut-to-Length | Random | Random | Random |
| Surface Finish | Black / Bright / Polished | Black / Bright | Black / Bright | Black / Bright | Black | Black / Bright | Black / Bright |
| Tolerance | h9 / h11 / As per ASTM | h9 / h11 | h9 / h11 | h9 / h11 | ASTM | ASTM | ASTM |
| Density (g/cm³) | 8.0 | 8.0 | 8.0 | 8.0 | 7.9 | 8.0 | 8.0 |
| Tensile Strength (MPa) | ≥ 515 | ≥ 485 | ≥ 515 | ≥ 485 | ≥ 520 | ≥ 515 | ≥ 515 |
| Yield Strength (MPa) | ≥ 205 | ≥ 170 | ≥ 205 | ≥ 170 | ≥ 210 | ≥ 205 | ≥ 205 |
| Elongation (%) | ≥ 40 | ≥ 40 | ≥ 40 | ≥ 40 | ≥ 40 | ≥ 40 | ≥ 40 |
| Hardness (HB) | ≤ 201 | ≤ 201 | ≤ 217 | ≤ 217 | ≤ 217 | ≤ 201 | ≤ 201 |
| Heat Treatment | Solution Annealed | Solution Annealed | Solution Annealed | Solution Annealed | Solution Annealed | Solution Annealed | Solution Annealed |
| Corrosion Resistance | Good | Good | Excellent (Chloride) | Excellent (Chloride) | High Temp Oxidation | Stabilized | Stabilized |
| Max Service Temp | ~870°C | ~870°C | ~870°C | ~870°C | ~1100°C | ~870°C | ~870°C |
| Typical Applications | Machining, Shafts | Welded Parts | Marine, Chemical | Pharma, Marine | Furnace Parts | Exhaust, HX | Pressure Vessels |
| Testing | Chemical, Mechanical, UT, PMI | Same | Same | Same | Same | Same | Same |
| Certification | EN 10204 3.1 / 3.2 | EN 10204 3.1 | EN 10204 3.1 | EN 10204 3.1 | EN 10204 3.1 | EN 10204 3.1 | EN 10204 3.1 |
| HSN Code | 7222 | 7222 | 7222 | 7222 | 7222 | 7222 | 7222 |
| Export Suitability | Domestic & Export | Export | Export | Export | Export | Export | Export |
Selecting the correct stainless steel round bar grade depends on the operating environment and application requirements:
Corrosion Exposure:
SS 316/316L is preferred for marine, chemical, and coastal environments due to molybdenum content.
Machining Requirements:
Bright drawn bars offer tighter tolerances for CNC and precision machining.
Inox Steel India maintains stock readiness and export documentation to support fast dispatch from Indian ports for global supply chains.
Stainless steel round bars supplied by Inox Steel India are widely used across industries where strength, corrosion resistance, machinability, and dimensional accuracy are critical. Each grade is selected based on operating conditions, fabrication method, and service life expectations.
| Industry / Sector | Typical Applications | Preferred Grades |
|---|---|---|
| Machining & Engineering | Shafts, pins, bolts, bushings, fasteners | SS 304, SS 304L, SS 316 |
| Oil & Gas | Valve components, couplings, connectors | SS 316, SS 316L |
| Marine & Offshore | Propeller shafts, fittings, fasteners | SS 316L |
| Chemical & Process | Agitators, reactor parts, pump components | SS 316, SS 347 |
| Power & Energy | Heat-resistant parts, thermal components | SS 310, SS 321 |
| Fabrication & Structural | Frames, supports, machined sections | SS 304 |
| Pressure Equipment | Pressure-retaining components | SS 321, SS 347 |
These applications demand consistent metallurgical properties, which are ensured through controlled manufacturing and testing.
Inox Steel India supplies stainless steel round bars in a wide range of diameters and finishes to suit both mass production and custom-engineered applications.
Standard Diameter Range (mm)
5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 20 mm, 25 mm, 32 mm, 40 mm, 50 mm, 65 mm, 80 mm, 100 mm and above up to 500 mm
Length Options
Finish Options
Bright round bars are recommended for CNC machining and precision components due to tighter dimensional tolerance
Weight of stainless steel round bar can be calculated using the standard formula:
Weight (kg/m) = (D² × 0.006165)
Where D = Diameter in mm
This formula is commonly used for estimating material requirement, logistics planning, and cost calculations.
| Grade | Approx. Price INR/kg | Approx. Price USD/kg |
|---|---|---|
| SS 304 / 304L | ₹ 260 – ₹ 360 | $ 3.20 – $ 4.35 |
| SS 316 / 316L | ₹ 320 – ₹ 420 | $ 3.85 – $ 5.05 |
| SS 310 | ₹ 480 – ₹ 620 | $ 5.80 – $ 7.45 |
| SS 321 / 347 | ₹ 450 – ₹ 600 | $ 5.40 – $ 7.20 |
Prices are indicative and subject to change based on nickel rates, size, and finish.
This code is used for GST billing, export documentation, and customs clearance.
Every stainless steel round bar supplied by Inox Steel India undergoes strict quality control and inspection to ensure compliance with ASTM standards and customer specifications.
Quality Tests Conducted
Documentation Supplied
These measures ensure material reliability, safety, and acceptance in regulated industries.
Inox Steel India is recognized as a dependable stainless steel round bar manufacturer and supplier in Mumbai, serving both domestic and international engineering markets with consistent quality and certified material.
Our Key Strengths
Our focus is not only on supply, but on helping buyers select the correct grade and size for long-term performance and cost efficiency.
| Industry | Application |
|---|---|
| Engineering & Machining | Shafts, fasteners, precision components |
| Oil & Gas | Valve parts, connectors, couplings |
| Marine & Offshore | Corrosion-resistant fittings |
| Chemical Processing | Reactor parts, pump components |
| Power & Energy | High-temperature service components |
| Fabrication | Structural and machined sections |
Each industry is supported with material traceability, technical guidance, and timely dispatch.
All stainless steel round bars are packed to ensure damage-free delivery and corrosion protection:
Export Destinations:
UAE, Saudi Arabia, Oman, Qatar, Nigeria, South Africa, Germany, Italy, USA, and other global markets.
Dispatch is arranged through JNPT (Mumbai), Mundra, and Hazira ports.
If you are searching for a stainless steel round bar supplier near Alankar Cinema, Mumbai, Inox Steel India offers immediate availability with certified material, competitive pricing, and fast delivery across Maharashtra and all major industrial regions of India.
For pricing, availability, or technical assistance, connect with our sales team.
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
steel@inoxsteelindia.in
+91 9930796690
The price of SS 304 round bar generally ranges between ₹260 – ₹360 per kg, depending on diameter and finish. SS 316L is preferred for marine and coastal environments due to superior chloride resistance. Standard sizes start from 5 mm diameter and are available up to 500 mm, with custom sizes on request. The HSN code for stainless steel round bars is 7222. Yes, we supply bright drawn stainless steel round bars suitable for CNC and precision machining. What is the price of SS 304 round bar per kg in India?
Which grade is suitable for marine applications?
What are standard sizes of stainless steel round bars?
What is the HSN code for stainless steel round bars?
Do you provide bright round bars for machining?
Inox Steel India is a leading stainless steel round bar manufacturer and supplier in Mumbai. SS 304, 316, 310, 321 & 347 round bars as per ASTM A276/A479. Competitive price per kg in India.