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Inox Steel India is a trusted manufacturer, supplier, and exporter of Stainless Steel Bright Bars in grades 304, 316, 303, 410, and 431, supplying precision-engineered materials to industries across India, GCC countries, the Middle East, Africa, Europe, and the Americas. Our bright bars are developed for applications where tight dimensional tolerances, smooth surface finish, corrosion resistance, and consistent mechanical properties are essential for long-term performance.
Stainless steel bright bars from Inox Steel India are produced using controlled secondary processing such as cold drawing, peel turning, polishing, and centerless grinding. These processes enhance straightness, roundness, and surface integrity, making the bars ideal for high-speed CNC machining, rotating components, and critical mechanical assemblies.
Stainless Steel Bright Bars are cold-finished bars manufactured from hot-rolled stainless steel rods that undergo precision finishing operations to achieve improved surface quality and dimensional accuracy.
This controlled manufacturing process ensures that every stainless steel bright bar delivers repeatable machining performance, reduced tool wear, and excellent surface finish on final components.
Each grade is supplied with EN 10204 3.1 certification, ensuring full compliance with international standards.
STAINLESS STEEL BRIGHT BARS – MASTER TECHNICAL DATA SHEETÂ
Grades: 304 | 316 | 303 | 410 | 431
| Parameter / Property | SS 304 | SS 316 | SS 303 | SS 410 | SS 431 |
|---|---|---|---|---|---|
| Material Type | Austenitic Stainless Steel | Austenitic Stainless Steel | Free-Machining Stainless Steel | Martensitic Stainless Steel | Martensitic Stainless Steel |
| UNS Number | S30400 | S31600 | S30300 | S41000 | S43100 |
| ASTM Standard | ASTM A276 / A479 | ASTM A276 / A479 | ASTM A276 / A479 | ASTM A276 / A479 | ASTM A276 / A479 |
| EN Equivalent | EN 1.4301 | EN 1.4401 | EN 1.4305 | EN 1.4006 | EN 1.4057 |
| DIN Equivalent | X5CrNi18-10 | X5CrNiMo17-12-2 | X8CrNiS18-9 | X12Cr13 | X17CrNi16-2 |
| IS Standard | IS 6603 | IS 6603 | IS 6603 | IS 6603 | IS 6603 |
| Manufacturing Process | Cold Drawn / Peeled / Polished / Centerless Ground | Same as SS 304 | Same as SS 304 | Same as SS 304 | Same as SS 304 |
| Available Forms | Round, Square, Hex, Flat Bright Bars | Round, Square, Hex, Flat Bright Bars | Round, Square, Hex, Flat Bright Bars | Round, Square, Hex, Flat Bright Bars | Round, Square, Hex, Flat Bright Bars |
| Diameter Range (Round) | 3 – 150 mm | 3 – 150 mm | 3 – 150 mm | 3 – 150 mm | 3 – 150 mm |
| Square / Hex Size | 5 – 100 mm | 5 – 100 mm | 5 – 100 mm | 5 – 100 mm | 5 – 100 mm |
| Standard Length | 3 – 6 meters | 3 – 6 meters | 3 – 6 meters | 3 – 6 meters | 3 – 6 meters |
| Custom Cut Lengths | As per drawing / requirement | As per drawing / requirement | As per drawing / requirement | As per drawing / requirement | As per drawing / requirement |
| Tolerance | h8 / h9 / h10 | h8 / h9 / h10 | h8 / h9 / h10 | h8 / h9 / h10 | h8 / h9 / h10 |
| Surface Finish | Bright Cold Drawn / Polished / Centerless Ground | Same as SS 304 | Same as SS 304 | Same as SS 304 | Same as SS 304 |
| Tensile Strength (MPa) | ≥ 515 | ≥ 515 | ≥ 500 | 480 – 700 | 850 – 1000 |
| Yield Strength (MPa) | ≥ 205 | ≥ 205 | ≥ 190 | ≥ 275 | ≥ 650 |
| Elongation (%) | ≥ 40 | ≥ 40 | ≥ 35 | ≥ 20 | ≥ 15 |
| Hardness (HB max) | ≤ 201 | ≤ 217 | ≤ 229 | ≤ 217 | ≤ 269 |
| Chemical Composition – Cr (%) | 18 – 20 | 16 – 18 | 17 – 19 | 11.5 – 13.5 | 15 – 17 |
| Chemical Composition – Ni (%) | 8 – 10.5 | 10 – 14 | 8 – 10 | — | 1.25 – 2.5 |
| Chemical Composition – Mo (%) | — | 2 – 3 | — | — | — |
| Carbon (C % max) | 0.08 | 0.08 | 0.15 | 0.15 | 0.20 |
| Sulphur (S %) | ≤ 0.03 | ≤ 0.03 | 0.15 – 0.35 | ≤ 0.03 | ≤ 0.03 |
| Testing Performed | Chemical, Mechanical, Dimensional, PMI | Same as SS 304 | Same as SS 304 | Same as SS 304 | Same as SS 304 |
| Certification | EN 10204 3.1 / 3.2, ISO 9001 | EN 10204 3.1 / 3.2, ISO 9001 | EN 10204 3.1 / 3.2, ISO 9001 | EN 10204 3.1 / 3.2, ISO 9001 | EN 10204 3.1 / 3.2, ISO 9001 |
| HSN / HS Code | 7222 | 7222 | 7222 | 7222 | 7222 |
| Typical Applications | Machining, Food, Pharma, Structural | Marine, Chemical, Pharma | High-Speed CNC Machining | Shafts, Valves, Mechanical Parts | Aerospace, High-Strength Shafts |
| Packaging | HDPE Wrap / Wooden Crate / Export Seaworthy | Same as SS 304 | Same as SS 304 | Same as SS 304 | Same as SS 304 |
Stainless Steel Bright Bars supplied by Inox Steel India are extensively used in precision-driven and load-bearing applications where dimensional accuracy, strength, corrosion resistance, and machinability directly impact component life and performance. Selection of the correct grade depends on service environment, machining complexity, and mechanical load.
Size Range & Dimensional Capabilities
INOX Steel India supplies stainless steel bright bars in a wide range of sizes to meet OEM and project-specific requirements.
Tight tolerances ensure reduced secondary machining and consistent interchangeability in mass production.
Surface Finish & Machining Benefits
These finishes result in:
| Grade | Approx. Price (INR / kg – Ex-Mumbai) | Approx. Price (USD / kg – FOB India) |
|---|---|---|
| SS 304 | ₹ 280 – ₹ 350 | $ 3.40 – $ 4.25 |
| SS 316 | ₹ 340 – ₹ 420 | $ 4.10 – $ 5.05 |
| SS 303 | ₹ 300 – ₹ 380 | $ 3.65 – $ 4.55 |
| SS 410 | ₹ 240 – ₹ 310 | $ 2.90 – $ 3.75 |
| SS 431 | ₹ 480 – ₹ 620 | $ 5.80 – $ 7.45 |
Prices are indicative and vary based on size, finish, tolerance, and order quantity.
HSN Code (India): 7222
HS Code (Export): 7222.20 / 7222.30 (depending on form and finish)
Every stainless steel bright bar supplied by Inox Steel India undergoes stringent quality checks:
All supplies are backed with EN 10204 3.1 / 3.2 Mill Test Certificates ensuring full traceability.
Inox Steel India is more than a material supplier — we are a solution-oriented manufacturer and global exporter of stainless steel bright bars, supporting OEMs, EPC contractors, and machining units with consistent quality and dependable supply.
Key Advantages:
Our focus is long-term reliability, not just supply.
| Industry | Typical Applications | Preferred Grades |
|---|---|---|
| Machining & CNC | Shafts, pins, bushings, turned parts | 303, 304 |
| Automotive & Engineering | Gears, spindles, axles | 410, 431 |
| Fasteners & Fittings | Bolts, nuts, connectors | 304, 316 |
| Marine & Offshore | Pump shafts, marine fittings | 316 |
| Aerospace & Defence | High-strength shafts & components | 431 |
Each application is matched with the right grade, finish, and tolerance to ensure performance and safety.
All stainless steel bright bars are packed as per international export standards:
Regular Export Destinations:
UAE · Saudi Arabia · Oman · Qatar · Nigeria · South Africa · Germany · Italy · UK · USA · Brazil
Ports of Dispatch:
JNPT (Mumbai) · Mundra · Hazira
At Inox Steel India, every bright bar is supplied with precision, traceability, and accountability.
Whether you need SS 303 for CNC machining, SS 316 for marine service, or SS 431 for high-strength applications — we deliver the right material, on time.
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
steel@inoxsteelindia.in
+91 9930796690
SS 303 is preferred for high-speed CNC machining due to excellent machinability, while SS 304 is used for general-purpose machining. SS 316 contains molybdenum, offering superior resistance to chlorides and marine environments compared to SS 304. Bright bars are supplied in h8, h9, and h10 tolerances depending on size and finish. The standard HSN code is 7222 for stainless steel bars and rods. we supply custom cut lengths as per drawing to reduce machining time and material wastage. Inox Steel India regularly exports stainless steel bright bars to GCC, Africa, Europe, and the Americas. Which grade is best for CNC machining?
What is the difference between SS 304 and SS 316 bright bars?
What tolerances are available for bright bars?
What is the HSN code for stainless steel bright bars?
Do you supply custom cut lengths?
Do you export stainless steel bright bars?
Inox Steel India is a leading manufacturer and exporter of stainless steel bright bars (304, 316, 303, 410, 431). Precision finished, certified & export-ready. Supplier near Alankar Cinema, Mumbai.