Stainless Steel UNS S30403 Rod, SS 304L Round Bar Manufacturer, Stockist of SS 304L Round Rod In Mumbai, Stainless Steel DIN 1.4306 Round Bars, Stainless Steel 304L Rods / Bars Supplier, 304L SS Bars, Stainless Steel 304L Round Bar Exporter India.
Skytech Rolling supplies Stainless Steel 304L Round Bars to fabricators, EPC contractors & process equipment manufacturers in India. 304L has lower carbon content than the regular 304. Machinists use it for post-weld work which bypasses stress-relief annealing altogether. Carbon for coastal plants, chemical units, and food processing lines is less than 0.03%. Resistant to intergranular corrosion after welding. Skytech rolls, draws, and finishes these SS 304L Round Rods to ASTM A276 and A479 standards, in diameters from 3.17mm to 350mm.
What is Stainless Steel 304L Round Bar?
Stainless Steel 304L Round Bar is the low carbon variant of SS 304, holding carbon below 0.03% against grade 304's 0.08% ceiling. That reduction limits carbide precipitation at grain boundaries during welding. Chromium at 18-20% and nickel at 8-12% build a passive oxide layer that resists oxidizing acids and chloride exposure. Tensile strength reaches 485 MPa, yield strength 170 MPa, with 40% elongation. Fabricators choose these stainless steel round bars when a weld joint must go straight into service without post-weld heat treatment.
Features & Benefits
The features and benefits of 304L Stainless Steel Round Bars, including ductility, corrosion resistance and more is listed below in detail.
- Corrosion Resistance: Carbon under 0.03% prevents carbide precipitation, protecting SS 304L Round Bars from intergranular attack after welding.
- High Weldability: With less carbon, you won't need to anneal after welding, so you save fabrication time on stainless steel 304L round rod projects.
- Mechanical Strength: Tensile strength of 485 MPa and yield strength of 170 MPa give these bars structural load capacity.
- Ductility: 40% elongation allows bending, forming and machining without cracking or work-hardening failures.
- Alloy Content Balance: Chromium 18-20% and nickel 8-12% resist oxidizing acids and marine chloride attack with time.
- Machinability: Reduced carbide formation due to low carbon content increases tool life on CNC and lathe work.
- Finishes: Bright, black, polished and rough turned finishes are available to satisfy the needs of ornamental, structural or precision machined parts.
Basic Grades & Types
- ASTM A276 SS 304L Round Bar: Hot worked to standard mechanical limits, this grade is suitable for structural and engineering fabrication work.
- SS 304L Bright Bar: This type is ground and polished to close tolerances and is used for decorative fittings and precision machined components.
- SS UNS S30403 Hot Rolled Bar: This is rolled for high strength applications. It has structural integrity under heavy mechanical loads.
- SS DIN 1.4307 Cold Drawn Round Bar: Cold drawn through dies to give very close dimensional accuracy, ideal for close tolerance machining projects.
- SS 304L Forged Bar: This type is forged under high pressure and temperature and is suitable for equipment under severe service conditions.
- SS 304L Hex Bar: Hexagon profile bars are used in the manufacture of fasteners to make nuts, bolts and turned precision parts.
Certification & Quality Testing
All Stainless Steel 304L Round Bars are supplied with a mill test certificate according to EN 10204 3.1 listing heat number, chemical composition and mechanical results. Each heat is tested by Skytech for tensile strength, yield strength and elongation against ASTM limits A276 and A479. Spectrometric analysis confirms chromium, nickel and carbon percentages before dispatch. Intergranular corrosion testing per ASTM A262 Practice E confirms weld-zone resistance, the property that differentiates 304L from standard 304 stock. For export orders, testing can be witnessed by third-party inspection agencies on request.
Why Choose Skytech Rolling for SS 304L Round Bars?
Skytech Rolling is a Mumbai based manufacturer of Stainless Steel 304L Round Bars. We roll stock of 3.17mm to 350mm diameter to ASTM A276, ASTM A479 and ASME SA276/SA479 standards. All heat treatments are certified by mill test certificates and full chemical and mechanical traceability. Scheduled dispatch of export shipments to USA, UAE, UK, Germany, Australia and South Africa is supported by in-house stock in bright, black, polished and rough turned finishes. Buyers of 304L stainless steel round bar bulk are offered direct mill pricing and technical help on grade selection for welded, machined or structural work. Fill out a quote request for your SS 304L Round Bar order including size, finish and quantity.
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Stainless Steel 304L Round Bars Specification :
Dimensions : ASTM, ASME
Specifications : ASTM A276, A479 / ASME SA276, SA479
Round Bars : Outside Diameter in the range of 4mm to 500mm
Bright Bars : Outside Diameter in the range of 4mm to 100mm
Hex Bars : 18mm – 57mm (11/16″ to 2-3/4″)
Square Bars : 18mm – 47mm (11/16″ to 1-3/4″)
Length : 1 to 6 Meters, Custom Cut Lengths
Form : Round, Square, Hex (A/F), Rectangle Etc.
Finish : Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Stainless Steel 304l Round Bar Equivalent Grades
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
|---|---|---|---|---|---|---|---|
| SS 304L | S30403 | 1.4306/1.4307 | Z3CN18-10 | X2CrNi18-9 / X2CrNi19-11 | SUS 304L | 304S11 | 03Х18Н11 |
Stainless Steel 304L Round Rod Chemical Composition :
| EN Number | name | Si | C | P | Mn | N | S | Cu | Cr | Ni | Mo | Others |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EN 1.4306 | X2CrNi19-11 | 1.00 | 0.030 | 0.045 | 2.00 | 0.11 | 0.030 | – | 18.0/20.0 | 10.0/12.0 | – | – |
Stainless Steel 304L Round Bars / Rods Physical Properties :
| Element | Density, lb/in3 | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
|---|---|---|---|---|---|
| SS 304L | 8.0 g/cm3 | 1400 °C (2550 °F) | 485 | 170 | 40 |
Sizes and Weight
| ROUNDS | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.49 | 1.60 |
| 18 | 0.62 | 2.02 |
| 20 | 0.76 | 2.49 |
| 22 | 0.92 | 3.02 |
| 25 | 1.19 | 3.90 |
| 28 | 1.49 | 4.89 |
| 30 | 1.71 | 5.61 |
| 32 | 1.95 | 6.38 |
| 36 | 2.46 | 8.08 |
| 38 | 2.74 | 9.00 |
| 40 | 3.04 | 9.97 |
| 45 | 3.85 | 12.62 |
| 50 | 4.75 | 15.57 |
| 56 | 5.96 | 19.55 |
| 60 | 6.84 | 22.44 |
| 65 | 8.03 | 26.34 |
| 70 | 9.31 | 30.54 |
| 75 | 10.69 | 35.06 |
| 80 | 12.16 | 39.89 |
| 90 | 15.39 | 50.49 |
| 100 | 19.00 | 62.34 |
Industrial Applications of SS 304L Round Bars
SS 304L Round Bars serve industries where welded joints must resist corrosion without post-weld heat treatment. Six sectors account for most demand.
- Marine & Shipbuilding: Resists saltwater corrosion and chloride pitting on deck fittings, shafts, and hull structural components.
- Chemical & Petrochemical: Withstands acids, alkalis, and process chemicals in reactor vessels, piping, and storage tank fabrication.
- Food & Beverage Processing: Non-reactive surface prevents contamination in mixing tanks, conveyors, and food-grade equipment frames.
- Pharmaceutical Manufacturing: Satisfies hygiene needs for sterile processing equipment, tablet presses and cleanroom fixtures.
- Aerospace & Automotive: High strength-to-weight ratio supports structural brackets, fasteners and precision machined parts.
- Power Generation & Construction: Allows for high temperature boiler components and structural framing that is exposed to weathering.
People Also Search For SS 304L Round Rods
FAQ’s
Stainless Steel 304L Round Bar is the low-carbon version of grade 304, holding under 0.03% carbon for weld-zone corrosion resistance without annealing.
Yes. The 18-20% chromium content provides resistance to corrosion, oxidation, and chlorides in marine and chemical environments due to the passive oxide layer formed.
Yes. 304L bars are easily machinable as the low carbon content reduces the risk of carbide precipitation, thus increasing the tool life during CNC turning and drilling operations.
304L bars are specified for weldable components that are corrosion-resistant in the marine, chemical processing, food and beverage, pharmaceutical, aerospace, automotive and power generation industries.
Yes, at Skytech Rolling we make bars from 3.17mm up to 350mm in diameter and can cut to custom lengths and finishes per your drawing specifications and project needs.
Each delivery shall be accompanied by a mill test certificate according to EN 10204 3.1, showing the results for chemical composition, tensile strength, yield strength and elongation.
Match the grade type to load, weld requirement, and environment. Structural work suits ASTM A276; precision parts suit cold drawn bar.
The factors that affect the price of SS 304L Round Bars are diameter, finish, order quantity, nickel market prices, and certification requirements.
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