Stainless Steel Round Bars
Stainless Steel Round Bars Manufacturer, Supplier & Exporter in India
Stellar Alloys Steel Pipes and Tubes is a leading manufacturer, supplier, and exporter of stainless steel round bars in India, serving industries worldwide with premium-grade SS round bars engineered for superior performance. Our stainless steel rods are manufactured from high-quality stainless steel alloys including SS 304, 316, and 410 grades, ensuring excellent corrosion resistance, durability, and high tensile strength across engineering, construction, marine, chemical processing, and industrial applications.
A stainless steel round bar is a cylindrical metal bar produced using processes such as hot rolling, forging, or cold drawing. These stainless steel rods are available in various grades including 304 stainless steel round bar, 316 stainless steel round bar, and 410 stainless steel round bar, each offering specific chemical and mechanical properties. One of the most widely followed standards for manufacturing is ASTM A276 stainless steel round bars, which ensures quality, dimensional accuracy, and consistent performance across industrial applications.
We supply stainless steel bar stock in multiple finishes including bright round bar, black finish, and polished surface to match specific application requirements. Our inventory includes hot rolled stainless steel round bars for structural projects and cold drawn precision bars for machining applications requiring tight tolerances. With over 25 years of manufacturing experience and ISO 9001:2015 certification, we maintain strict quality control throughout production to deliver consistent, defect-free products that meet ASTM A276 and other international standards.
international standards and industry specifications, making them suitable for both domestic and global industrial applications.
Our SS round bars serve critical applications across oil and gas, chemical processing, marine engineering, automotive manufacturing, and pharmaceutical industries. Each bar undergoes 100% ultrasonic testing per ASTM A-388 standards to ensure internal soundness, and we provide complete mill test certificates with every shipment for full material traceability.
Table of Contents
- Types of Stainless Steel Round Bars
- Specification of Stainless Steel Round Bars
- Tolerance Standards for SS Round Bars
- Heat Treatment Services
- Chemical Composition of Stainless Steel Round Bars
- Mechanical Properties of Round Bar
- Stainless Steel Round Bar Sizes
- Weight Calculation Formula
- Stainless Steel Round Bar Price List
- Applications & Uses of Stainless Steel Round Bars
- Quality Testing & Inspection
- People Ask About Round Bar Manufacturer
Types of Stainless Steel Round Bars
We manufacture stainless steel round bars in multiple grades and finishes to meet diverse industrial requirements:
SS 304 Round Bars
SS 304L Round Bars
SS 316 Round Bars
SS 316L Round Bars
Specification of Stainless Steel Round Bars
Specification | Details |
Standard | ASTM A276 / ASTM A479 |
Material Grade | SS 304, 304L, 316, 316L, 321, 410 |
Diameter | 3 mm to 500 mm |
Length | 1 m to 6 m |
Finish | Bright, Black, Polished |
Form | Round Bars, Stainless Steel Rods |
Tolerance Standards for SS Round Bars
We manufacture stainless steel round bars to precise dimensional tolerances meeting international standards:
- Bright Bars (Cold Drawn): h9, h10, h11 tolerance grades per ISO 286
- Hot Rolled Bars: k12, k13 tolerance grades per EN 10060 and DIN 1013
- Centerless Ground Bars: h6, h7, h8 precision tolerances for critical machining applications
- Straightness: Maintained up to 0.25 mm/meter TIR (Total Indicated Runout)
Tight tolerances ensure minimal material waste during machining and consistent part quality in high-volume production runs.
Heat Treatment Services
Our in-house heat treatment facilities allow us to customize mechanical properties for specific applications:
- Solution Annealing: Restores corrosion resistance and ductility in austenitic grades after welding or cold working
- Soft Annealing: Maximizes formability for severe bending or deep drawing operations
- Hardening & Tempering: Achieves specific hardness levels in martensitic grades for wear-resistant applications
- Stress Relieving: Minimizes residual stresses in machined components to prevent warping
All heat treatment processes are performed per ASTM standards with full documentation and hardness testing certification.
Chemical Composition of Stainless Steel Round Bars
Element | SS 304 (%) | SS 316 (%) |
Chromium | 18 – 20 | 16 – 18 |
Nickel | 8 – 10.5 | 10 – 14 |
Carbon | 0.08 max | 0.08 max |
Molybdenum | — | 2 – 3 |
Manganese | 2 max | 2 max |
Mechanical Properties of Round Bar
|
Property |
SS 304 |
SS 316 |
|
Tensile Strength |
515 MPa |
515 MPa |
|
Yield Strength |
205 MPa |
205 MPa |
|
Elongation |
40% |
40% |
|
Hardness |
201 HB |
217 HB |
Stainless Steel Round Bar Sizes
Stainless steel bar stock is available in a wide range of diameters to meet engineering requirements.
Diameter | Length |
3 mm – 10 mm | 3 m – 6 m |
12 mm – 50 mm | 3 m – 6 m |
60 mm – 150 mm | 3 m – 6 m |
160 mm – 500 mm | Custom |
Custom sizes can also be manufactured depending on project specifications.
Weight Calculation Formula:
Diameter (mm) × Diameter (mm) × 0.00623 = Weight per meter (kg/m)
Example: A 20mm diameter SS 304 round bar weighs 20 × 20 × 0.00623 = 2.49 kg/m
Stainless Steel Round Bar Price List
Our SS round bar prices are competitive across the Indian market. The final stainless steel round bar price per kg varies based on material grade, diameter, surface finish, order quantity, and current alloy surcharges. Contact us for bulk pricing and custom quotations
Grade | Size | Price (Approx.) |
SS 304 Round Bar | 10 mm | ₹220 – ₹260 per kg |
SS 316 Round Bar | 10 mm | ₹320 – ₹380 per kg |
SS 410 Round Bar | 10 mm | ₹180 – ₹220 per kg |
Prices are indicative and subject to change based on raw material costs, alloy surcharges, and market conditions. Request an updated quote for current pricing.
Applications & Uses of Stainless Steel Round Bars
Our stainless steel round bars serve mission-critical applications across multiple industries due to their exceptional strength, corrosion resistance, and reliability in harsh environments:
Common applications include:
- Oil and Gas Industry – Downhole pump shafts, valve stems, instrumentation components, and wellhead equipment
- Chemical Processing Plants – Reactor vessel shafts, agitator components, pump impellers, and corrosion-resistant fasteners
- Marine and Offshore Structures – Propeller shafts, deck equipment, rigging hardware, and saltwater-resistant fittings
- Automotive and Mechanical Engineering – Engine components, transmission shafts, precision machined parts, and suspension elements
- Pump and Valve Manufacturing – Valve stems, pump shafts, piston rods, and high-pressure fittings
- Construction and Structural Frameworks – Architectural supports, railing systems, and load-bearing structural members
- Food Processing Equipment – Mixer shafts, conveyor components, sanitary fittings, and hygienic processing machinery
- Aerospace Components – Landing gear parts, high-strength fasteners, precision machined aircraft components
Our stainless steel round bars serve mission-critical applications across multiple industries due to their exceptional strength, corrosion resistance, and reliability in harsh environments:
Common applications include:
- Oil and Gas Industry – Downhole pump shafts, valve stems, instrumentation components, and wellhead equipment
- Chemical Processing Plants – Reactor vessel shafts, agitator components, pump impellers, and corrosion-resistant fasteners
- Marine and Offshore Structures – Propeller shafts, deck equipment, rigging hardware, and saltwater-resistant fittings
- Automotive and Mechanical Engineering – Engine components, transmission shafts, precision machined parts, and suspension elements
- Pump and Valve Manufacturing – Valve stems, pump shafts, piston rods, and high-pressure fittings
- Construction and Structural Frameworks – Architectural supports, railing systems, and load-bearing structural members
- Food Processing Equipment – Mixer shafts, conveyor components, sanitary fittings, and hygienic processing machinery
- Aerospace Components – Landing gear parts, high-strength fasteners, precision machined aircraft components
Quality Testing & Inspection
Every batch undergoes comprehensive testing to ensure defect-free products:
- Ultrasonic Testing (UT): 100% inspection per ASTM A-388 and EN 10308 to detect internal flaws
- Positive Material Identification (PMI): Handheld XRF spectrometry confirms grade and chemistry
- Dimensional Inspection: Digital micrometers and optical comparators verify tolerances
- Surface Quality Check: Visual and magnetic particle inspection (MPI) for cracks or surface defects
- Mechanical Testing: Tensile strength, hardness, and impact testing per ASTM E8 and ASTM E18
Complete mill test certificates (MTC) with 3.1 or 3.2 certification are provided with every shipment, including chemical composition, mechanical properties, and traceability data.
People Ask About Round Bar Manufacturer
Hot rolled bars are processed at high temperatures and have a black oxide scale finish with looser tolerances, making them suitable for structural applications. Cold drawn bars are processed at room temperature through dies, resulting in precise dimensions, smooth bright finish, and tighter tolerances ideal for machining applications.
For standard sizes and grades in stock, delivery typically takes 3-5 business days within India. Custom sizes or special grades may require 10-15 days for manufacturing. Export orders are shipped within 7-14 days depending on quantity and destination.
Stainless steel round bars are used to manufacture shafts, fasteners, machine parts, valves, pumps, and structural components.
The most commonly used grades are 304 stainless steel round bar and 316 stainless steel round bar.
The most widely used standard is ASTM A276 stainless steel round bars.