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Stainless Steel 409 / 409L / 409M Pipes & Tubes Supplier & Stockist in India
High-temperature exhaust management and moderate atmospheric containment demand titanium-stabilized ferritic alloys that balance thermal oxidation endurance with cost efficiency. Steel Emporium is a premier Stainless Steel 409 Pipes & Tubes Supplier in India, delivering precision-engineered piping solutions tailored for automotive silencers, furnace ducting, and structural frameworks.
To support high-volume OEM fabrication schedules, we operate as a leading Stainless Steel 409 Pipes & Tubes Stockist in India, holding ready-to-ship inventory across seamless, ERW, and HFW configurations. Every dispatch aligns with our accredited ISO 9001:2015 Quality Management System and comprehensive EN 10204 3.1 mill test certification protocols.
For automated robotic welding lines where heat-affected zone sensitization must be completely eliminated, source directly from an experienced Stainless Steel 409L Pipes & Tubes Stockist in India. For applications requiring enhanced corrosion and oxidation resistance in elevated temperature exhaust loops, explore our specialized Stainless Steel 436, 439 & 441 Pipes & Tubes inventory.
Handling abrasive dry solids, agricultural slurries, or coal bulk transfer requires specialized materials. As a premier Stainless Steel 409M Tubes Supplier in India and nationwide SS 409M Pipe Stockist, we provide factory-direct pricing, custom-cut dimensions, and express global logistical support.
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ASTM A268 / A554 SS 409, 409L & 409M Technical Specifications
Our manufacturing centers execute precision cold drawing, high-frequency tube welding, seam conditioning, and custom surface finishing across all ferritic stainless steel standards.
| Technical Parameter | Specification Scope & Manufacturing Capabilities |
|---|---|
| Governing Material Standards | ASTM A268 / ASME SA268 (Seamless & Welded Ferritic), ASTM A554 (Ornamental/Structural), EN 10296-2, DIN 17455 |
| Grade Sub-Variants | Stainless Steel 409 (UNS S40900), Stainless Steel 409L (UNS S40903), Stainless Steel 409M (WNR 1.4003 / EN 10088-2) |
| Manufacturing Processes | Seamless, ERW (Electric Resistance Welded), EFW, High-Frequency Welded (HFW), Cold Drawn (CDW) |
| Cross-Sectional Profiles | Circular Round, Square, Rectangular, Oval, Elliptical, Custom Structural Profiles |
| Outer Diameter (OD) Scope | Seamless: 6.0 mm to 114.3 mm OD | Welded / ERW: 9.5 mm to 152.4 mm OD (1/8" to 6" Nominal) |
| Wall Thickness Schedule Range | SCH 5S, SCH 10S, SCH 40S, SCH 80S, plus gauge sizes from 0.8 mm to 6.35 mm WT |
| Standard Delivery Lengths | 1 Meter to 12.0 Meters, Single Random, Double Random, Precision Cut-to-Length |
| End Finish & Surface Condition | Plain End, Square Cut, Beveled Ends, Mill Finish, Annealed & Pickled, Polished (180 Grit to 400 Grit) |
Alloy Grade Selection Guide: SS 409 vs SS 409L vs SS 409M
SS 409 Pipes & Tubes – Titanium-Stabilized Thermal Endurance
Titanium stabilization in standard Stainless Steel 409 Pipes prevents chromium carbide precipitation at operating temperatures up to 675°C. This makes Stainless Steel 409 Tubes an economical choice for automotive exhaust systems, furnace ducting, and structural frameworks subject to moderate heat scaling.
SS 409L Pipes & Tubes – Ultra-Low Carbon for Seamless Weldability
Featuring carbon restricted to 0.03% max, Stainless Steel 409L Pipes eliminate intergranular corrosion in weld heat-affected zones. Stainless Steel 409L Tubes are specifically engineered for automated robotic welding, complex hydroformed manifolds, and severe tube bending without cracking.
SS 409M Pipes & Tubes – Modified Structure for Abrasive & Wet Environments
Formulated with elevated manganese and controlled nickel, Stainless Steel 409M Pipes feature a dual-phase microstructure that delivers superior yield strength (280 MPa min). Stainless Steel 409M Tubes excel in coal chutes, grain conveyors, and mining slurry pipelines where slide-abrasion resistance is required.
Chemical, Mechanical & Equivalent Specifications
| Chemical Element | SS 409 (UNS S40900) | SS 409L (UNS S40903) | SS 409M (EN 1.4003) |
|---|---|---|---|
| Carbon (C) | 0.08% Max | 0.03% Max | 0.03% Max |
| Chromium (Cr) | 10.50 – 11.75% | 10.50 – 11.75% | 11.00 – 12.00% |
| Manganese (Mn) | 1.00% Max | 1.00% Max | 0.80 – 1.50% |
| Silicon (Si) | 1.00% Max | 1.00% Max | 1.00% Max |
| Nickel (Ni) | 0.50% Max | 0.50% Max | 0.30 – 1.00% |
| Titanium (Ti) | 6 × (C + N) Min to 0.75% Max | 0.08 – 0.75% Max | 0.05% Max (Optional) |
| Phosphorus (P) | 0.040% Max | 0.040% Max | 0.040% Max |
| Sulphur (S) | 0.020% Max | 0.020% Max | 0.015% Max |
| Mechanical Parameter | SS 409 | SS 409L | SS 409M |
|---|---|---|---|
| Tensile Strength (Rm) | 380 MPa Min (55 ksi) | 380 MPa Min (55 ksi) | 450 – 600 MPa (65 – 87 ksi) |
| Yield Strength (0.2% Offset) | 205 MPa Min (30 ksi) | 175 MPa Min (25 ksi) | 280 MPa Min (40 ksi) |
| Elongation (% in 50 mm) | 20% Minimum | 25% Minimum | 20% Minimum |
| Hardness (Rockwell B / Brinell) | 88 HRB Max / 175 HB | 80 HRB Max / 150 HB | 95 HRB Max / 200 HB |
| Microstructural Classification | Ferritic | Low-Carbon Ferritic | Ferritic-Martensitic / Dual Phase |
| Property | SS 409 | SS 409L | SS 409M |
|---|---|---|---|
| UNS Number | S40900 | S40903 | UNS S40003 / S41003 |
| Werkstoff No. | 1.4512 | 1.4512 (Low C) | 1.4003 |
| EN / DIN Grade | X2CrTi12 | X2CrTi12 (Low C) | X2CrNi12 |
| JIS (Japan) | SUH 409 | SUH 409L | — |
Stainless Steel 409 Series Size & Dimensional Chart
The dimensional table below outlines our standard stock range of round ERW and seamless piping available for immediate industrial dispatch.
| Nominal Size (NB / Inch) | Outer Diameter (OD in mm) | Available Wall Thicknesses (mm) | Available Schedules / Gauges |
|---|---|---|---|
| 1/2" NB | 21.34 mm | 1.20 mm / 1.65 mm / 2.11 mm / 2.77 mm | 18 Gauge / 16 Gauge / SCH 10S / SCH 40S |
| 3/4" NB | 26.67 mm | 1.20 mm / 1.65 mm / 2.11 mm / 2.87 mm | 18 Gauge / 16 Gauge / SCH 10S / SCH 40S |
| 1" NB | 33.40 mm | 1.50 mm / 2.00 mm / 2.77 mm / 3.38 mm | 16 Gauge / 14 Gauge / SCH 10S / SCH 40S |
| 1-1/2" NB | 48.26 mm | 1.50 mm / 2.00 mm / 2.77 mm / 3.68 mm | 16 Gauge / 14 Gauge / SCH 10S / SCH 40S |
| 2" NB | 60.33 mm | 1.65 mm / 2.00 mm / 2.77 mm / 3.91 mm | 16 Gauge / SCH 5S / SCH 10S / SCH 40S |
| 3" NB | 88.90 mm | 2.00 mm / 3.05 mm / 5.49 mm | SCH 5S / SCH 10S / SCH 40S |
| 4" NB to 6" NB | 114.30 mm to 168.28 mm | 2.11 mm to 7.11 mm | SCH 5S / SCH 10S / SCH 40S |
| Square Tubing | 20x20 mm to 100x100 mm | 1.00 mm to 4.50 mm WT | Custom Ornamental & Structural Cut Lengths |
Sector-Specific Applications for 409 Series Tubing
The unique chemistry across the 409 alloy cluster delivers targeted performance in specific thermal, structural, and material handling environments.
Automotive Exhaust & Silencers (SS 409/409L)
Specified for manifolds, catalytic converters, and muffler shells requiring resistance to hot exhaust gases and thermal scaling.
Power Generation & Furnaces (SS 409L)
Integrated into air preheaters and furnace ducting where low carbon prevents weld degradation under cyclic heat.
Mining & Bulk Solid Handling (SS 409M)
Applied in coal chutes, hoppers, and slurry lines where elevated yield strength and sliding-abrasion resistance are essential.
Agricultural Machinery (SS 409M)
Utilized in grain augers and fertilizer troughs requiring structural toughness alongside resistance to organic wet corrosion.
Transit & Bus Frameworks (SS 409/409M)
Built into passenger coach chassis and cargo container frames for strong, low-maintenance structural framing.
Quality Assurance, MTC Certification & NDT Protocols
Every order cleared by Steel Emporium undergoes rigorous physical, chemical, and non-destructive testing in accordance with our quality policies.
| Certification / Standard | Compliance & Testing Scope |
|---|---|
| ISO 9001:2015 & Pressure Compliance | Certified QMS with PED 2014/68/EU and AD 2000 Merkblatt approvals. |
| EN 10204 3.1 & 3.2 MTC | Official test reports covering heat numbers, chemistry, and factory origin tracking. |
| PMI & Lab Verification | 100% XRF spectro testing and NABL-accredited laboratory inspections. |
| Mechanical & Weld NDT | Hydrostatic, ultrasonic, and flaring tests guarantee 100% seam integrity. |
| TPI & Corporate Address | Inspection-ready for SGS, TUV, Bureau Veritas, or Lloyds. |
| Verified Corporate Address | Registered Head Office & Operations: 102, Durga Devi Street, Mumbai-400004, Maharashtra, India |
Frequently Asked Questions
Request a Technical Sourcing Quote
Looking for high-performance ferritic stainless steel tubing for your manufacturing operations? Contact our engineering sales group today for instant factory pricing, MTC submittals, and custom delivery schedules.