The Steel House India stands as an established manufacturer, stockholder, and certified global exporter of heavy-duty ASTM A276 and ASTM A479 AISI 310S Stainless Steel Round Bars. Operating a centralized stockyard and cutting-edge distribution facility in Mumbai, Maharashtra, we maintain an extensive inventory of high-alloy austenitic solid profiles tailored specifically for intense, high-temperature industrial environments.
Designated as UNS S31008 / WNR 1.4842, Grade 310S features a low-carbon composition that minimizes carbide precipitation during welding and heat exposure. This property enhances resistance to intergranular corrosion while maintaining structural integrity at continuous operating temperatures up to 1150°C. These round bars are extensively used in furnace components, heat treatment equipment, petrochemical plants, and other demanding thermal processing applications.
Our extensive inventory includes ASTM A276 AISI 310S Stainless Steel Round Bars in sizes ranging from 3mm precision bright bars to 500mm+ heavy forged shafts, all manufactured from premium VOD/AOD refined billets with complete traceability. For applications requiring superior corrosion resistance in welded and chemical processing environments, customers can also explore our ASTM A276 AISI 316L Stainless Steel Round Bars, a reliable alternative for marine, pharmaceutical, and industrial processing sectors. Starting Price: ₹370–390/Kg (subject to current market rates, size, and quantity).
📊Request an Instant Commercial Quote: Because global metal market pricing is directly tied to the daily price fluctuations of raw nickel and chromium spot surcharges, our final commercial invoices adapt dynamically based on order tonnage, custom centerless grinding metrics, and saw-cutting profiles. Contact our central Mumbai sales office today for a real-time, custom-tailored bulk contract quotation.
Precision-Engineered 310S Stainless Steel Round Bars
Extensive 310S Inventory for Immediate Dispatch
Certified Quality & Metallurgical Integrity
Buy Premium AISI 310S Solid Rods Directly from Mumbai Stockyard
By sourcing your high-temperature alloys directly from The Steel House India, you completely bypass middle-tier trading margins and gain direct access to fast regional and international fulfillment paths. Our strategic presence in Maharashtra enables streamlined logistics, allowing our internal freight teams to coordinate rapid domestic shipping across India's core engineering corridors and streamlined international ocean export via nearby major deepwater ports. Whether you are supplying a local power plant or managing a global refinery project, our inventory is positioned to minimize lead times significantly.
Complete Range of Available Surface Finishes
Different engineering layouts, complex machining operations, and high-temperature furnace designs require distinct surface topologies to properly interface with structural components, seal boundaries, or high-vacuum weldments.
■ Cold Drawn (Bright Finish):
This finish exhibits sharp dimensional accuracy combined with a smooth,
highly reflective outer surface layer. It is excellent for direct loading
into high-speed CNC automated lathes, significantly minimizing custom setup
times during mass production runs.
■ Centerless Ground & Polished:
Engineered specifically for micro-precision operations, this option offers
exceptionally tight h8 to h11 diameter tolerances. The grinding process
completely eliminates surface decarburization layers, ensuring uniform
structural hardness across the entire cross-section of the shaft.
■ Rough Peeled / Smooth Turned:
The outer mill skin is systematically stripped away down to a sound,
defect-free metallurgical core. This method is typically utilized for
heavy-diameter forged shafts destined for secondary forging, heavy
machining, or critical structural re-processing.
■ Black Hot Rolled:
Supplied directly from the mill infrastructure following standard hot
rolling and industrial descaling treatments. It is best suited for
structural framing, internal furnace reinforcement, or basic components
where secondary machining or high-aesthetic visual finishes are not
required.
Why Engineering Procurement Teams Trust The Steel House India
Procuring high-alloy materials for thermal processing equipment requires a
dependable supplier capable of backing physical material claims with
verifiable testing infrastructure. We eliminate supply-chain risks for your
facility through three rigid quality evaluation metrics:
1. Positive Material Identification (PMI):
Our internal quality desk subjects every single incoming and outgoing
production batch to handheld PMI spectrometer testing. This process
guarantees that the high chromium (24% to 26%) and high-nickel content (19%
to 22%) are perfectly distributed throughout the metal matrix, preventing
premature oxidation failure or unexpected brittle snapping under heavy
thermal loads.
2. EN 10204 3.1 Traceability Compliance:
Every shipment dispatched from our warehouse facility is accompanied by
authentic Mill Test Certificates (MTC). This standard industry documentation
provides full trace-history transparency back to the original furnace heat
number, specifying exact chemical analysis breakdowns, raw mechanical
elongation thresholds, and non-destructive ultrasonic testing outcomes.
3. Heavy Freight Transit Protection:
Cold-drawn and centerless ground rods feature precise surface finishes
required for exact machining clearances, making them highly vulnerable to
surface scratches during freight forwarding. Our dedicated Mumbai logistics
desk ensures that all bars are bundled face-to-face to prevent friction,
wrapped tightly in moisture-resistant HDPE plastic, and securely packed in
rigid wooden crates or steel-banded pallets.
Technical Specifications & Grade Profile
The engineering reference tables below outline the structural metrics, international standard naming conventions, and mechanical properties adhered to by The Steel House India.
1. Manufacturing Scope and Standard Compliance
| Manufacturing Feature | Operational Parameter & Standard Baseline |
|---|---|
| Material Specifications | ASTM A276, ASTM A479, ASME SA276, ASME SA479 |
| International Standards | EN, DIN, JIS, ASTM, BS, ASME, AISI, IS, GOST |
| Diameter Sizing Range | 3mm to 500mm (Standard Metric & Imperial Sizing Available) |
| Dimensional Tolerances | h8, h9, h10, h11, h12 / k9, k10, k11, k12 (Conforming to ASTM A484) |
| Value-Added Processing | Production Bar Cutting, Centerless Grinding, Turn/Ground/Polishing, Chamfering |
2. International Material Grade Equivalents
| Standard Grade | UNS Designation | Werkstoff Number (WNR) | Euronorm (EN) |
|---|---|---|---|
| AISI 310S | UNS S31008 | 1.4842 | X15CrNiSi25-21 |
3. Chemical Composition Limits (% by Weight)
| Element | Certified Value Limit (310S) | Element | Certified Value Limit |
|---|---|---|---|
| Chromium (Cr) | 24.00 - 26.00% | Nickel (Ni) | 19.00 - 22.00% |
| Carbon (C) | 0.08% Max | Silicon (Si) | 1.50% max |
| Manganese (Mn) | 2.00% max | Phosphorus (P) | 0.045% max |
| Sulfur (S) | 0.030% max | Iron (Fe) | Balance Matrix |
4. Mechanical & Physical Property Profile
| Mechanical Property Parameter | Certified Minimum Value Threshold |
|---|---|
| Ultimate Tensile Strength | 75,000 psi (515 MPa Minimum) |
| Yield Strength (0.2% Offset) | 30,000 psi (205 MPa Minimum) |
| Elongation Percentage (in 50mm) | 40% Minimum Elongation Capacity |
| Brinell Hardness (HB) | 217 Maximum Hardness Value |
| Melting Point Profile | 1400°C - 1402°C |
Sizing Matrix & Theoretical Weight Reference Formula
To determine the precise theoretical mass of a stainless steel solid
round bar per linear meter for logistics planning, ocean freight
container loading, and site material handling, engineers utilize the
following geometric constant formula:
$$\text{Diameter (mm)} \times \text{Diameter (mm)} \times 0.00623 =
\text{Weight in Kilograms per Meter (Kg/m)}$$
High-Demand Stock Sizing and Weight Chart
| Diameter Sizing (mm) | Weight (Kg/m) | Diameter Sizing (mm) | Weight (Kg/m) |
|---|---|---|---|
| 10 mm | 0.62 Kg/m | 50 mm | 15.58 Kg/m |
| 20 mm | 2.49 Kg/m | 60 mm | 22.43 Kg/m |
| 25 mm | 3.89 Kg/m | 80 mm | 39.87 Kg/m |
| 30 mm | 5.61 Kg/m | 100 mm | 62.30 Kg/m |
Strategic Applications Across Industrial Sectors
| Target Industry | Component Deployment | Structural Utility |
|---|---|---|
| Thermal Processing & Furnaces | Radiant tubes, muffle linings, furnace structural supports, burner tips, heat exchangers. | Maintains microstructural integrity and geometry under continuous high-temperature loads up to 1150°C. |
| Petrochemical & Refining | Fluid catalytic cracking units (FCCU), thermo-wells, recovery systems, internal vessel liners. | Prevents internal component failure and "weld decay" when exposed to sulfurous and hot hydrocarbon process gasses. |
| Power Generation & Energy | Boiler components, coal gasifier components, steam superheaters, heavy turbine exhaust casings. | Resists continuous thermal oxidation, gas corrosion, and structural creep under high-pressure thermal cycles. |
Frequently Asked Questions (FAQ)
1. What is the main difference between 310 and 310S Stainless Steel?
310S is the low-carbon version of 310 (max 0.08% Carbon vs 0.25% in 310). This lower carbon prevents carbide precipitation during welding, reducing the risk of intergranular corrosion (weld decay). Hence, 310S is preferred for welded components.
2. Is 310S better for high-temperature welding?
Yes. Due to its low carbon content, 310S is less prone to sensitization in the heat-affected zone. This keeps the weld area strong and corrosion-resistant even after welding and slow cooling.
3. Do you provide Mill Test Certificates (MTC)?
Yes. Every order includes a genuine EN 10204 3.1 Mill Test Certificate with full chemical analysis, mechanical properties, heat number, and PMI verification.
4. Can you supply custom cut lengths?
Yes. We offer precise cut-to-length service using automatic band saws. Standard lengths are 3–6 meters, but we can cut as per your drawings to reduce material wastage and machining time.
5. What is the maximum continuous operating temperature for 310S?
Grade 310S can be used continuously up to 1150°C in oxidizing atmospheres. It provides excellent scaling and oxidation resistance, making it ideal for furnaces, radiant tubes, and high-heat applications.
Comparative Overview: Grade 310S vs. Grade 316L
While both are high-performance austenitic stainless steels, their metallurgical properties are tailored for different operational environments. The table below highlights the primary functional differences:
| Feature | Grade 310S (High-Heat) | Grade 316L (Corrosion-Resistant) |
|---|---|---|
| Primary Strength | Extreme Heat & Oxidation Resistance | Superior Pitting & Acid Corrosion Resistance |
| Max Continuous Temp | Up to 1150°C | Up to 870°C |
| Nickel / Chromium | High (19-22% Ni / 24-26% Cr) | Moderate (10-14% Ni / 16-18% Cr) |
| Molybdenum (Mo) | None | 2-3% (Main advantage) |
| Best Applications | Furnaces, Radiant Tubes, Heat Exchangers | Marine, Chemical Plants, Pharmaceutical |
Selection Guidance:If your project requirements focus on thermal stability for furnace linings, high-temperature processing, or sulfurous gas handling, Grade 310S is the industry-standard choice. However, if your application involves high-chloride environments or acidic chemical processing where localized corrosion is the primary concern, you may find our 316L stainless steel solutions more appropriate.
Request a Callback from Our Sourcing Desk
This commercial product destination page is managed, regularly updated, and technically verified by the international sales and engineering distribution division at The Steel House India. Leveraging more than three decades of direct industrial supply, logistical execution, and engineering partnerships within the Indian metal markets, we guarantee that all commercial pricing models, dimensional availability, and raw material parameters align with active global testing standards.
Our primary corporate office and centralized warehouse hub are strategically located in Mumbai, Maharashtra, India, ensuring rapid domestic dispatches and efficient ocean container loading for global export. To streamline your procurement process, our dedicated sales desk handles all formal Request for Quote (RFQ) submissions with clear, itemized pricing structures. For immediate product inquiries, direct bulk contracts, or to request a technical consultation for your project, please forward your detailed material requirements directly to our centralized inbox at sales@steelhouseindia.com. Once received, a senior technical sourcing officer will review your specifications and contact you within two business hours to finalize your order tracking framework.