ASTM A268 TP409 SS Thick Wall Pipe
Type：Seamless Pipe
Wall Thickness;0.2-40mm
Technique：Hot Rolled/Cold Drawn
Shape：Round/Customized
Process：Polished/Solution Treatment
Test：BV, SGS Is Available
Stock：Size Can Customized
Introduction
ASTM A268 TP409 stainless steel pipe belongs to ferritic stainless steel (UNS S40900), which is the preferred material for automotive exhaust systems and industrial high-temperature pipes. It is produced through hot rolling/hot expansion process to meet the structural strength requirements of high pressure and high load conditions.
ASTM A268 TP409 Stainless steel exhaust pipe
Advantages of ASTM A268 TP409 steel tube
ASTM A268 TP409 SS pipe is a ferritic stainless steel seamless pipe that meets the ASTM A268 standard. The main material is S40900, and the corresponding German standard is DIN 1.4512
TP409 SS thick-walled pipe is made of S40900, which is a ferritic stainless steel containing about 10% chromium, with good corrosion resistance and high temperature performance. Its specifications range widely, such as φ252, φ382, φ452, φ572, φ602 and φ762, etc.
TP409 SS seamless pipe is suitable for a variety of industrial applications, including but not limited to petroleum geological drilling, petrochemical cracking, boiler manufacturing, bearing manufacturing, and high-precision structural parts in the automotive, tractor and aviation fields, etc..
Reasons to choose GNEE:
GNEE products have been exported to 60 countries including India, Thailand, Iran, Brazil, Egypt, etc. GNEE has passed ISO9001 quality management system certification, American Petroleum Institute API-5CT, API-5L certification, special equipment production license, BV certification and other third-party certifications.
GNEE provides additional services such as machining, bending, painting, heat treatment, cutting, drilling, beveling, tempering, surface treatment, etc.
ASTM A268 TP409 double wall steel pipe Specifications
| Item | Specification |
|---|---|
| Outer Diameter (OD) | 89 mm–610 mm (3.5"–24") |
| Wall Thickness (WT) | 6 mm–30 mm (Sch40–Sch160) |
| Length | Standard: 6 m–12 m Custom: Cut to order (Minimum 2 m) |
| Surface Finish | Hot-rolled Pickled (Standard); Coated (Optional: Aluminum-Silicon/Epoxy) |
| Standards Compliance | ASTM A268, ASME SA268, JIS G4305 (SUS409L) |
| Special Testing | High-temperature tensile test (500℃); Hydraulic pressure test (1.5x working pressure) |
TP409 vs 304 430 stainless steel pipe
| Property | TP409 (Ferritic) | 304 (Austenitic) | 430 (Ferritic) |
|---|---|---|---|
| Chromium (Cr) Content | 11.5–12.5% | 18–20% | 16–18% |
| Nickel (Ni) Content | ≤0.5% | 8–10.5% | 0% |
| Maximum Service Temp | 650℃ | 870℃ | 800℃ |
| Cost | Lowest (Nickel-free) | Higher | Medium |
| Chloride Resistance | Low (1,000 ppm) | Strong (20,000 ppm) | Moderate (3,000 ppm) |
| Weldability | Good (heat input control required) | Excellent | Good |
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