Stainless Steel 409L ERW Pipes and Tubes are titanium-stabilized ferritic pipes used for exhaust and heat service in which oxidation and corrosion are the major factors to be considered. The 409L grade, EN 1.4512 (X2CrTi12), is restricted to 0.03% of carbon content, thus making sure that no unwanted carbide precipitation occurs in the weld region. Amardeep Steel Centre supplies these tubes in India for automotive, industrial and export orders. See our SS 409 tubes and our range of SS welded pipes and tubes.
Technical Data
Specifications of Stainless Steel 409L ERW Pipes & Tubes
Parameter | Specification Details |
|---|---|
Grade | 409L (TP409), UNS S40900 / UNS S40903, EN 1.4512 (X2CrTi12) |
Standard | ASTM A268 / ASME SA268 (Seamless and Welded Ferritic Stainless Steel Tubing for General Service) |
Manufacturing Process | Electric Resistance Welded (ERW) |
Outer Diameter (OD) | 1/2 inch NB to 8 inch NB (larger sizes supplied on request against mill capability) |
Wall Thickness | Schedule 5S to Schedule 40S, custom gauge in mm / SWG per project requirement |
Form | Round, Square, Rectangular, Custom Profile |
Length | Single Random, Double Random, Precision Cut Length |
End Finish | Plain End (PE), Beveled End (BE) |
Documentation | Mill Test Certificate (MTC) per EN 10204 3.1 supplied with every order |
Surface Finish | Mill Finish (2B), Bright Annealed (BA), Exterior Polished (180 to 600 Grit) on request |
Testing & Inspection | Chemical Analysis, Tensile, Flattening, Flaring, Hardness Tests, Hydrostatic or Non-Destructive Eddy Current Testing, PMI on request |
Chemical Compositions of Stainless Steel 409L ERW Pipes & Tubes
Chemical Element | Specification Limit (% Mass) |
|---|---|
Carbon (C) | 0.03% max (409L supply limit; TP409 base spec allows 0.08% max) |
Manganese (Mn) | 1.00% max |
Silicon (Si) | 1.00% max |
Chromium (Cr) | 10.50% to 11.75% |
Nickel (Ni) | 0.50% max |
Titanium (Ti) | 6 × (C + N) min, 0.75% max |
Phosphorus (P) | 0.045% max |
Sulfur (S) | 0.045% max |
Iron (Fe) | Balance |
Stainless Steel 409L ERW Pipes & Tubes Mechanical Properties
Mechanical Property | ASTM A268 Minimum Requirement |
|---|---|
Tensile Strength (Ultimate) | 380 MPa (55 ksi) min |
Yield Strength (0.2% Offset) | 170 MPa (25 ksi) min |
Elongation (in 2 in / 50 mm) | 20% min |
Hardness (Max) | 95 HRB (207 HBW) max |
Equivalent Grades of of Stainless Steel 409L ERW Pipes & Tubes
Grade | UNS | DIN (Werkstoff No.) | JIS | EN Name |
|---|---|---|---|---|
SS 409L | S40900 | 1.4512 | SUS 409L | X2CrTi12 |
Dimensions Chart of Stainless Steel 409L ERW Pipes & Tubes
Nominal Bore (NB) | Outer Diameter (OD) | Wall Thickness Range |
|---|---|---|
1/2 inch to 2 inch NB | 21.3 mm to 60.3 mm | 1.65 mm to 3.91 mm |
2.5 inch to 8 inch NB | 73.0 mm to 219.1 mm | 3.05 mm to 8.18 mm |
Above 8 inch NB | On request | Quoted against mill capability |
Applications and Industrial Uses of Stainless Steel 409L ERW Pipes & tubes
- Automotive Exhaust Pipes
- Mufflers and Silencers
- Catalytic Converter Shells
- Exhaust Downpipes and Mid Pipes
- Resonator and Center Pipes
- Heat Exchanger Components
- Industrial Exhaust and Heat-Resistant Equipment
- Agricultural and Heavy-Vehicle Exhaust Systems
Frequently Asked Questions
What are Stainless Steel 409L ERW Pipes and Tubes?
Stainless Steel 409L ERW Pipes and Tubes are welded ferritic stainless steel products made by forming and electrically welding 409L steel strip.
What is Stainless Steel 409L used for?
It is mainly used for automotive exhaust systems, mufflers, catalytic converter components, heat exchangers, and other heat-resistant applications.
What is the difference between Stainless Steel 409 and 409L?
409L has a lower carbon content than standard 409, which improves weld-zone stability and helps reduce carbide formation after welding.
Is Stainless Steel 409L suitable for high-temperature applications?
Yes. 409L offers good oxidation and heat resistance, making it suitable for elevated-temperature applications such as automotive exhaust systems.
Are Stainless Steel 409L ERW Pipes corrosion resistant?
Yes. They provide moderate corrosion resistance, particularly in automotive and mildly corrosive environments.
Can Stainless Steel 409L ERW Pipes be welded?
Yes. 409L has good weldability and can be welded using commonly used welding processes with suitable procedures.
