SS 304 Round Bars
SS 304 Round Bars Manufacturer & Supplier in India
SS 304 round bars are one of the most widely used stainless steel products in industrial and commercial applications. Known for their excellent corrosion resistance, durability, and versatility, stainless steel 304 round bars are widely used across industries such as construction, chemical processing, food processing, marine engineering, and manufacturing. These bars are produced using high-quality stainless steel material that offers outstanding strength and resistance to oxidation and rust.
The 304 stainless steel round bar belongs to the austenitic stainless steel family and contains chromium and nickel, which provide superior corrosion resistance and long service life. Because of these properties, SS 304 rods and stainless steel 304 bar stock are commonly used for fabrication, machining, and structural applications where reliability and strength are required.
Stellar Alloys Steel Pipes and Tubes is a trusted manufacturer and supplier of premium quality SS 304 round bars that meet international standards such as ASTM A276 and ASTM A479. These stainless steel bars are manufactured under strict quality control processes to ensure dimensional accuracy, excellent surface finish, and reliable mechanical performance. Industries prefer SS 304 bright round bars and hot rolled bars due to their excellent machinability and corrosion resistance.
Stellar Alloys Steel Pipes and Tubes supplies stainless steel 304 rods in a wide range of sizes, finishes, and specifications suitable for demanding industrial applications including engineering components, shafts, fasteners, and structural fabrication. The company supplies SS 304 round bars with full EN 10204 3.1 mill test certificates and exports to UAE, Saudi Arabia, USA, UK, Singapore, South Africa, and Australia. Available payment modes include LC, TT, and Cheque.
Table of Contents
Types of SS 304 Round Bars
We manufacture stainless steel round bars in multiple grades and finishes to meet diverse industrial requirements:
SS 304 Square Bar
SS 304 Hex Bar
SS 304 Flat Bar
SS 304 Forged Rod
SS 304 Bright Bar
SS 304 Flat Bar
EN24 Round Bars
EN24 round bars are high tensile alloy steel bars known for their excellent toughness, fatigue resistance, and high strength. These bars contain nickel, chromium, and molybdenum which improve their hardenability and wear resistance. EN24 alloy steel round bars are widely used in manufacturing gears, shafts, bolts, and heavy-duty mechanical parts.
EN31 Round Bars
EN31 round bars are high carbon alloy steel bars that provide exceptional hardness and wear resistance. These bars are commonly used for bearing manufacturing, automotive components, rollers, and precision engineering tools. EN31 alloy steel rods offer excellent machinability and superior performance in applications requiring high surface hardness.
Specification of SS 304 Round Bars
Specification | Details |
Material | Stainless Steel 304 |
Standard | ASTM A276 / ASTM A479 |
UNS Number | UNS S30400 |
DIN Equivalent | 1.4301 |
Form | SS 304 Round Bars / SS 304 Rods |
Diameter | 6 mm to 300 mm |
Length | 3 m, 6 m, or Cut Length |
Finish | Bright, Black, Polished |
Surface Condition | Hot Rolled, Cold Drawn, Turned & Polished |
Condition | Annealed / Cold Drawn / Bright Drawn |
MTC | EN 10204 3.1 Mill Test Certificates available for all orders |
Equivalent Grades of ASTM A276 Stainless Steel 304 Round Bars
Standard | Grade / Number |
ASTM / ASME | SS 304 |
Werkstoff No. | 1.4301 |
UNS | S30400 |
JIS | SUS 304 |
BS | 304S31 |
GOST | 08Х18Н10 |
AFNOR | Z7CN18-09 |
EN | X5CrNi18-10 |
SS 304 Round Bar Chemical Composition
Element | Composition (%) |
Carbon (C) | 0.08 max |
Manganese (Mn) | 2.00 max |
Silicon (Si) | 0.75 max |
Phosphorus (P) | 0.045 max |
Sulfur (S) | 0.030 max |
Chromium (Cr) | 18 – 20 |
Nickel (Ni) | 8 – 11 |
Molybdenum (Mo) | 0.10 max (Residual) |
Nitrogen (N) | Not Specified |
SS 304 Round Bar Mechanical properties
Property | Value |
Density | 8.0 g/cm³ |
Melting Temperature | 1400°C (2550°F approx.) |
Tensile Strength | 515 MPa (75,000 psi) |
Yield Strength (0.2% Offset) | 205 MPa (30,000 psi) |
Elongation | 35% |
Hardness | 201 HB max (92 HRB max) |
Physical Properties of 304 Stainless Steel Round Bars
Property | Value |
Thermal Conductivity | 16.2 W/m·K |
Electrical Resistivity | 720 nΩ·m |
Specific Heat Capacity | 500 J/kg·K |
Modulus of Elasticity | 193 GPa |
SS 304 Round Bar Standard Sizes
Diameter (mm) | Weight per Meter (kg/m) |
6 mm | 0.22 |
8 mm | 0.40 |
10 mm | 0.63 |
12 mm | 0.89 |
16 mm | 1.58 |
20 mm | 2.47 |
25 mm | 3.86 |
32 mm | 6.31 |
40 mm | 9.87 |
50 mm | 15.42 |
63 mm | 24.47 |
80 mm | 39.48 |
100 mm | 61.68 |
Surface Finish Options for ASTM A276 Type 304 Round Bars
Code | Finish Type |
HR | Hot Rolled Annealed |
HF | Hot Finished |
CD | Cold Drawn |
CF | Cold Finished |
BD | Bright Drawn |
CG | Centreless Ground |
RT | Rough Turned / Peeled |
P & T | Peeled and Turned |
PR | Peeled and Reeled |
ST | Smooth Turned |
P | Polished |
SRE | Slit Rolled Edge |
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
Stainless Steel 304 Round Bar Weight Chart
Diameter (mm) | Weight (kg/m) |
6 mm | 0.22 |
8 mm | 0.40 |
10 mm | 0.62 |
12 mm | 0.89 |
16 mm | 1.58 |
20 mm | 2.46 |
25 mm | 3.85 |
32 mm | 6.31 |
40 mm | 9.86 |
50 mm | 15.40 |
63 mm | 24.60 |
80 mm | 39.50 |
100 mm | 61.60 |
Dimensions of ASTM A276 Grade 304 Bright Bars
Width (mm) | Area Round (cm²) | Area Square (cm²) | Weight Round (kg/m) | Weight Square (kg/m) |
80 | 50.27 | 64.00 | 39.46 | 50.24 |
63 | 31.17 | 39.69 | 24.47 | 31.16 |
50 | 19.64 | 25.00 | 15.41 | 19.62 |
40 | 12.57 | 16.00 | 9.86 | 12.56 |
32 | 8.04 | 10.24 | 6.31 | 8.04 |
25 | 4.91 | 6.25 | 3.85 | 4.91 |
20 | 3.14 | 4.00 | 2.47 | 3.14 |
16 | 2.01 | 2.56 | 1.58 | 2.01 |
12 | 1.13 | 1.44 | 0.89 | 1.13 |
10 | 0.79 | 1.00 | 0.63 | 0.79 |
8 | 0.50 | 0.64 | 0.39 | 0.50 |
6 | 0.28 | 0.36 | 0.22 | 0.28 |
SS 304 Round Bars Price List (India)
The price of Stainless Steel 304 round bars varies depending on diameter, finish (bright, black, cold drawn), quantity, and supplier. In India, the typical market rate is roughly ₹200 – ₹250 per kg, though it may go lower or higher depending on size and order volume.
Below is an approximate SS 304 round bar price list used by many suppliers for reference.
Diameter (mm) | Approx Price (INR/KG) |
4 – 20 mm | ₹150 – ₹180 |
21 – 40 mm | ₹150 – ₹175 |
41 – 60 mm | ₹145 – ₹170 |
61 – 80 mm | ₹145 – ₹170 |
81 – 100 mm | ₹145 – ₹175 |
101 – 160 mm | ₹150 – ₹180 |
161 – 220 mm | ₹150 – ₹185 |
221 – 280 mm | ₹155 – ₹190 |
281 – 340 mm | ₹160 – ₹195 |
341 – 400 mm | ₹165 – ₹200 |
Prices generally increase slightly for bright bars, cold drawn bars, or polished finishes compared to black bars.
Testing & Quality Certifications for SS 304 Round Bars" with:
Chemical Composition Analysis (PMI / Spectrometric per ASTM E1412), Mechanical Testing (Tensile, Yield, Elongation, Hardness per ASTM A276), Dimensional Inspection (diameter, straightness, surface finish), Non-Destructive Testing (Ultrasonic UT on request), Material Test Certificates (MTC) to EN 10204 3.1 for all orders. Add: ‘For critical applications, intergranular corrosion testing per ASTM A262 Practice E is available on request.’
Applications & Uses of SS 304 Round Bars
SS 304 round bars are widely used in multiple industries due to their corrosion resistance and mechanical strength.
Common applications include:
- Chemical processing equipment
- Food processing machinery
- Marine components
- Structural components
- Pumps and valves
- Automotive parts
- Construction and fabrication
- Oil and gas industry equipment
Their excellent corrosion resistance and formability make them suitable for both indoor and outdoor applications.
FAQs About SS 304 Round Bars
SS 304 round bars are stainless steel bars made from grade 304 stainless steel, known for their corrosion resistance, strength, and versatility.
They are used in industries such as construction, marine, chemical processing, food processing, and automotive manufacturing.
Nickel alloy round bars such as Inconel, Hastelloy, and Monel provide superior high-temperature and corrosion resistance compared to standard stainless steel grades like SS 304.
Yes, manufacturers can provide custom sizes and lengths based on project requirements.
You can purchase high-quality SS 304 round bars from trusted manufacturers such as Stellar Alloys Steel Pipes and Tubes.