| 409 Stainless Steel Seamless Pipes Standards |
ASTM A213, ASTM A249, ASTM A269, ASME SA213, ASME SA249, ASME SA269, EN 10216-5 TC1 / TC2, PED 97/23/EC, AD 2000, NACE MR0175/ISO 15156 |
| 409 Seamless Aerospace Tubing |
AMS 5564, AMS 5565, AMS 5567, AMS 5569, AMS 5695 (Canceled & non-current specs include AMS-T-6845, Mil-T-6845, AMS-T-8504, Mil-T-8504, AMS-T-8506, Mil-T-8506) |
| WELDED & DRAWN 409 Stainless Steel Aerospace Tubing |
AMS 5564, AMS 5565, AMS 5566, AMS 5567, AMS 5569 (Canceled & non-current specs include AMS-T-6845, Mil-T-6845, AMS-T-8504, Mil-T-8504, AMS-T-8506, Mil-T-8506) |
| ASTM A312 Stainless Steel Pipe Typical Manufacturing Specifications |
ASTM A213,ASTM A312,ASME B36.19,AMS 5647,AMS 5566,AMS 5569,AMS 6845,BS 10216 Pt 5,ASTM A269,BS 3605 Pt 1,ASTM A632,NFA 49-117,NFA 49-217,Mil-T 8504,Mil-T 8606,or as per customer specifications. |
| Austenitic Stainless Steel 409 Pipes Seamless Tube Size |
3.35 mm OD To 630 mm OD |
| 409 Stainless Steel Welded Tube Size |
6.35 mm OD To 1219 mm OD |
| ASTM A312 TP 409 Stainless Steel Seamless Pipes Swg & Bwg |
10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| SS 409 Pipe Schedule |
SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Stainless Steel 409 Seamless Pipes Wall thickness |
0.020″ -0.220″, (special wall thicknesses available) |
| SS 409 tube Length |
Single Random, Double Random, Standard & Cut length |
| Stainless Steel UNS S40900 ERW Pipes Finish |
Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| Stainless Steel DIN 1.4301 Pipes Form |
Round Pipes/ Tubes, Square Pipes/ Tubes, Rectangular Pipe/ Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils, Hydraulic Tubes, Straight or 'U' bent Tubes, Hollow, LSAW Tubes Etc. |
| 409 Stainless Steel Welded Pipe Type |
Seamless, ERW, EFW, Welded, Fabricated |
| Electropolished |
(EP) Electropolished for Ultra High Purity Systems |
| Non-Electropolished |
(BA) Bright Annealed or (AP) Annealed & Pickled for High-Purity, (CFOS) Cleaned for Oxygen Grade Service or Corrosive Systems |
| I.D. Surface Finish Options |
5, 7 & 10 µin. Ra |
| 409 Stainless Steel Round Pipe JIS |
8A to 250A |
| 409 Stainless Steel Square Pipe Tolerances |
In accordance with: ASTM: A269 & A632, JIS: G 3459 |
| 409 stainless steel tubing End |
Plain End, Beveled End, Treaded, Ends are suitable for orbital welding |
| ASTM A312 TP 409 Stainless Steel Marking |
All 409 Stainless Steel tubes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer's request.) |
| 409 stainless steel tubing Application |
Oil Tube, Gas Tube, Fluid Tube, Boiler and Heatexchanger |
| Value Added Service |
Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Specialize in |
Stainless Steel 409 Capillary Tube & Other Odd Size |
| Stainless Steel 409 Heat Exchanger & Condenser Tubes |
| Stainless Steel 409 Hydraulic tubing with OD up to 50.8 mm (2.0 in.) are delivered in bright annealed condition |
| ASTM A312 TP409 tube with OD larger than 50.8 mm are supplied in the annealed and pickled condition, Or in polished condition |
| Marking & Traceability |
Each Stainless Steel 409 Tubing is traceable to its producing mill and heat by an identification number etched within 24″ (610mm) of one end. |
| Test Certificate |
Manufacturer Test Certificate according to EN 10204 3.1 B |
| Laboratory Test Certificate from Govt. Approved Lab. |
| Under Third Party Inspection |
| Testing & Inspection |
Visual inspection • Surface roughness measurement • Helium-leak testing • Scanning Electron Microscopy (SEM) • Auger Electron Microscopy (AES) • Election Spectroscopy for Chemical Analysis (ESCA or XPS) • Particle testing • Moisture testing |
The Pinnacle of 410 Stainless Steel Tube Fabrication Excellence
At DaXun, our 409 stainless steel tubes stand out for their impressive corrosion resistance and cost-effectiveness, making them one of the most economical stainless steel options available. Boasting exceptional tensile strength, these tubes are ideal for arc welding and excel in resistance spot welding and seam welding. Remarkably, welding does not diminish the corrosion resistance of 409 stainless steel. Versatile and reliable, our tubes are perfect for diverse applications such as automotive and truck exhaust systems, heat exchangers, agricultural spreaders, fuel filters, gas turbine exhaust mufflers, and other uses demanding precise forming, toughness, and unparalleled weldability. A key benefit of this stainless steel grade is its enhanced weldability.
Premier Stainless Steel Welded Tubes
Our stainless steel tubular products are crafted with precision from top-grade stainless steel strips, expertly roll-formed and fusion-welded along the longitudinal seam. At Daxun, our welding process is unmatched, utilizing no filler metal to ensure superior structural integrity.
Applications for Stainless Steel 409
- Advanced Aerospace Structures;
- Automobile Exhaust Pipes, Engine Components;
- Innovative Medical Devices;
- High-Quality Knives and Kitchenware;
- Petrochemical Industry Applications;
- Durable Stainless Steel Cutlery and Kitchen Utensils;
- Precision Manufacturing of Flat Springs;
- Versatile Hand Tools;
- Reliable Bolts, Nuts, Springs, and Fasteners;
Stainless Steel Seamless Tubes
Our seamless stainless steel tubes are refined from hollow sections using advanced piercing or hot extrusion processes. These tubes are perfect for large diameter-to-wall thickness ratios, delivering superior external dimensional tolerances.
Quality, Delivery, and Inspection Protocols
- At Jiangsu Daxun Alloy Co., Ltd., we uphold a commitment to excellence with rigorous quality assurance tests, including flattening, pitting and resistance tests, mechanical tests, hardness tests, material positive identification, and expansion tests. Each thorough test ensures our materials are impeccably suited for your demanding applications.
- Throughout production, we meticulously measure the diameter, thickness, and surface quality of our products. Standard delivery timelines range from 7 to 15 days. For special-sized products, the timeline may extend up to 20 days, ensuring every detail meets your precise specifications.
We strictly adhere to the delivery timelines specified in our contracts, ensuring punctual and reliable service.
- We welcome and support inspections by customer-authorized third-party agencies at our factory to ensure the highest quality standards.
- Experience our superior quality firsthand through our free samples, available for rigorous testing.
- We offer on-site or video factory inspection options, ensuring full transparency and trust in our manufacturing process.
Experience the unmatched stainless steel pipe manufacturing prowess of Daxun.
Our forming capabilities are unmatched, featuring state-of-the-art extrusion and cold working technologies for tube and pipe manufacturing. We proudly host one of the world's largest pilger mills and a unique hydroforming process for precision fittings.
Discover Daxun's Superior Pipe Processing Prowess
As a vertically integrated manufacturer, Daxun offers a complete one-stop-shop solution. From overseeing entire projects to handling specific machining tasks, our capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services.
Daxun: Your Premier Destination for Superior, Larger Pipe Solutions.
Equipped with state-of-the-art vertical and horizontal presses boasting capacities ranging from 12,000 to a staggering 35,000 tons, Jiangsu Daxun Alloy Co., Ltd. sets a new standard in the industry with its unparalleled pipe extrusion capabilities. This cutting-edge technology enables us to manufacture the longest and largest diameter pipes available on the market today, ensuring exceptional quality and reliability for even the most demanding applications.
Jiangsu Daxun Alloy Co., Ltd. proudly serves as a trusted supplier to the power generation sector, providing essential components such as ductwork, boiler tubes, main steam tubes, thermal reheat tubes, and flue gas desulfurization units. Our meticulously engineered products are crafted to meet the stringent requirements of nuclear, coal-fired, renewable energy, and combined cycle power plants, guaranteeing optimal performance and efficiency across all applications.
| Ferrite and Martensite Chemical Content and Mechanical Properties |
| Standard |
Steel Grade |
C (%) |
Mn (%) |
P (%) |
S (%) |
Si (%) |
Cr (%) |
Ni (%) |
Mo (%) |
N (%) |
Nb (%) |
Ti (%) |
Al (%) |
Cu (%) |
| A/SA268 |
TP405 |
≤ 0.08 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
11.50 ~ 14.50 |
≤ 0.50 |
- |
- |
- |
- |
0.1-0.3 |
- |
| A/SA268 |
TP410 |
≤ 0.15 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
11.50 ~ 13.50 |
- |
- |
- |
- |
- |
- |
- |
| A/SA268 |
TP410S |
≤ 0.08 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
11.50 ~ 13.50 |
- |
- |
- |
- |
- |
- |
- |
| A/SA268 |
TP430 |
≤ 0.12 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
16.00 ~ 18.00 |
- |
- |
- |
- |
- |
- |
- |
| A/SA268 |
TP430Ti |
≤ 0.15 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
16.00 ~ 19.50 |
- |
0.75 |
- |
- |
5C-0.75 |
- |
- |
| A/SA268 |
TP446-1 |
≤ 0.20 |
≤ 1.50 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
23.00 ~ 27.00 |
- |
≤ 0.75 |
- |
0.25 |
- |
- |
- |
| A/SA268 |
TP446-2 |
≤ 0.12 |
≤ 1.50 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
23.00 ~ 27.00 |
- |
≤ 0.50 |
- |
0.25 |
- |
- |
- |
| A/SA268 |
TP409 |
≤ 0.08 |
≤ 1.00 |
≤ 0.045 |
≤ 0.030 |
≤ 1.00 |
10.50 ~ 11.70 |
≤ 0.50 |
- |
- |
6C-0.75 |
- |
- |
- |
| A/SA268 |
TP439 |
≤ 0.07 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
17.00 ~ 19.00 |
≤ 0.50 |
- |
0.04 |
0.2+4(C+N)~1.1 |
- |
- |
|
| A/SA268 |
TP444 |
≤ 0.025 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
17.50 ~ 19.50 |
- |
1.75-2.5 |
0.035 |
(Ti+Cb): 0.2+4(C+N)~0.8 |
- |
- |
|
| A/SA756/268 |
440C |
0.95 ~ 1.10 |
≤ 1.00 |
≤ 0.040 |
≤ 0.025 |
≤ 1.00 |
16.00 ~ 18.00 |
- |
0.4-0.7 |
- |
- |
- |
- |
- |
| A/SA693 |
17-4PH |
≤ 0.07 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
15.50 ~ 17.50 |
3.00 ~ 5.00 |
- |
- |
0.15-0.45 |
- |
3.0-5.0 |
- |
| GOST9941-81 |
15Cr25Ti |
≤ 0.15 |
≤ 1.00 |
≤ 0.035 |
≤ 0.025 |
≤ 1.00 |
24.00 ~ 27.00 |
- |
- |
- |
5C-0.90 |
- |
- |
- |
| API 5CT |
L80/9Cr |
≤ 0.15 ~ 0.30 |
0.6 |
≤ 0.020 |
≤ 0.010 |
≤ 1.00 |
8.00 ~ 10.00 |
0.9-1.1 |
- |
- |
- |
- |
- |
- |
| API 5CT |
L80/13Cr |
0.15 ~ 0.22 |
0.25 ~ 1.00 |
≤ 0.020 |
≤ 0.010 |
≤ 1.00 |
12.00 ~ 14.00 |
- |
- |
- |
- |
- |
- |
- |
| EN10088-1 |
0Cr13SiAl |
≤ 0.12 |
≤ 1.00 |
≤ 0.040 |
≤ 0.015 |
0.70 ~ 1.40 |
12.00 ~ 14.00 |
- |
- |
- |
- |
- |
0.7-1.2 |
- |
| EN10088-1 |
0Cr18SiAl |
≤ 0.12 |
≤ 1.00 |
≤ 0.040 |
≤ 0.015 |
0.70 ~ 1.40 |
17.00 ~ 19.00 |
- |
- |
- |
- |
- |
0.7-1.2 |
- |
| EN10088-1 |
0Cr24SiAl |
≤ 0.12 |
≤ 1.00 |
≤ 0.040 |
≤ 0.015 |
0.70 ~ 1.40 |
23.00 ~ 26.00 |
- |
- |
- |
- |
- |
1.2-1.7 |
- |
| EN10088-1 |
1Cr25Ti |
≤ 0.12 |
≤ 1.50 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
23.00 ~ 27.00 |
- |
- |
- |
5C-0.90 |
- |
- |
0.25 |
| A/SA268 |
S44660 |
≤ 0.030 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
25.00 ~ 28.00 |
3.0-4.0 |
- |
0.04 |
(Ti+Cb): 0.2~1.0≥6(C+N)~0.8 |
- |
- |
- |
| A/SA268 |
S44735 |
≤ 0.030 |
≤ 1.00 |
≤ 0.040 |
≤ 0.030 |
≤ 1.00 |
28.00 ~ 30.00 |
3.6-4.2 |
- |
0.045 |
|
|
|
|
Grade 409 is a stabilized ferritic general-purpose stainless steel tube containing approximately 11% chromium, making it ideally suited for applications requiring superior oxidation and corrosion resistance-areas where carbon steel and certain coated steels fall short. Renowned for its robust oxidation resistance and formability, the 409 tube, while exhibiting lower corrosion resistance compared to grades 304, 430, or 439, still outperforms mild steel. This versatility allows for diverse forming techniques including roll forming, stretch bending, deep drawing, and press forming. Post-annealing, the 409 tube maintains its softness and malleability, making it ideal for cold forming processes. Although boasting fair weldability, it is important to note that this stainless material should not be used in shock-loaded structures due to grain growth in the heat-affected zone, which impacts mechanical integrity. Predominantly used in automotive exhaust systems, the 409 tube excels in resisting corrosion from exhaust gases and enduring high temperatures. Its mechanical properties are particularly advantageous in the automotive and agricultural sectors, although it is generally not recommended for decorative applications due to its less aesthetic finish.
Chemical Composition of 409 Stainless Steel Pipe
| Element |
% Present (in product form) |
| Carbon (C) |
0.03 |
| Silicon (Si) |
1 |
| Manganese (Mn) |
1 |
| Phosphorous (P) |
0.04 |
| Sulfur (S) |
0.015 |
| Chromium (Cr) |
10.50 - 12.50 |
| Molybdenum (Mo) |
6 x (C+N) to 0.65 |
| Iron (Fe) |
Balance |
Mechanical Properties of 409 Stainless Steel Pipe
| Product Form |
|
|
|
| |
C |
H |
| Thickness (mm) Max |
8 |
13.5 |
| Yield Strength Rp0.2 N/mm2 |
Longitudinal |
210 |
| Transverse |
220 |
| Tensile Strength |
Rm N/mm2 |
380 - 560 |
| Elongation min. in % |
A80mm1) <3mm (longitudunal + transverse) |
25 |
| A2) ≥3mm (longitudinal + transverse) |
409 Stainless Steel Pipe: PHYSICAL PROPERTIES
| Density |
Thermal Conductivity |
Electrical |
Modulus of |
Coefficient of |
Specific Heat |
Melting |
| lbm/in^3 |
(BTU/h ft. °F) |
Resistivity |
Elasticity |
Thermal Expansion |
(BTU/lb/ |
Range |
| |
|
(in x 10^-6) |
(psi x 10^6) |
(in/in)/ |
°F) |
(°F) |
| |
|
|
|
°F x 10^-6 |
|
|
| |
12.4 at 932 °F |
39.4 at 752°F |
|
6.60 at 32 - 1000°F |
|
|
| |
|
49.6 at 1652 °F |
|
6.86 at 32 - 1500°F |
|
|
| at 68°F: 0.280 |
9.4 at 212°F |
28.3 at 68°F |
29 |
5.84 at 32 - 212°F |
0.114 at 68°F to 212°F |
2500 to 2590 |
The Premier Stainless Steel Sheet Suppliers in China
GENERAL PROPERTIES:
- Alloy 409 is an advanced ferritic stainless steel, expertly stabilized with both chromium and titanium. Engineered primarily for automobile exhaust systems, it boasts an 11% chromium content-the essential minimum for forming the passive surface layer that grants stainless steels their renowned corrosion resistance. This alloy offers exceptional resistance to corrosion at elevated temperatures, possesses medium strength, good formability, and remains cost-effective. With superior corrosion resistance compared to carbon steel, Alloy 409 is favored in moderately demanding applications where its robust corrosion and high-temperature oxidation resistance provide a significant advantage. It is commonly used in scenarios where mechanical properties and corrosion resistance are prioritized over appearance.
APPLICATIONS:
- Originally developed for the automotive exhaust industry, Alloy 409 has since found successful applications across a diverse array of industrial sectors. It is notably utilized in:
- Automotive exhaust systems
- Catalytic converters
- Mufflers
- Tailpipes
- Farm equipment
- Structural support and hangers
- Transformer cases
- Furnace components
- Heat exchanger tubing
STANDARDS:
- ASTM/ASME: UNS S40900
- EU standard: FeMi35Cr20Cu4Mo2
- DIN: 2.4660
CORROSION RESISTANCE:
- Demonstrates remarkable resistance to atmospheric and exhaust gas corrosion
- In most environments, a light surface rust will develop, which hinders further corrosion but may affect surface aesthetics
HEAT RESISTANCE:
- Classified as resistant to scaling in intermittent service up to 1499oF (815oC) and up to 1247oF (675oC) during continuous service
WELDABILITY
- Easily weldable
- Pre-heating to 302 to 500oF (150 to 260oC) is advisable
- Post-weld annealing at 1400 to 1499oF enhances weld ductility
- Post-weld annealing is typically unnecessary for thin sections
- Automotive exhaust tubing generally welded without filler metal
Q1: What products can you offer?
A: We offer an extensive selection of general steel types such as 310S, 316L, 304, 304L, 201, 904L, 316H, among others. Furthermore, we provide duplex stainless steels like 2205, 2304, 2101, 2507, 904L, and high-nickel alloys including 800H and 600H.
We stock an extensive range of 400 series and duplex stainless steels, including types such as 2205, 2304, 2101, 2507, and 904L. Our diverse inventory also features high-nickel alloys, including the robust 800H and 600H.
Q2. Can you produce the products according to my own drawings?
Yes, we specialize in custom manufacturing based on your drawings, ensuring each product meets your precise specifications.
Q3. How does your factory do regarding quality control?
Quality is our paramount concern. From the initial stages to the final touches, we uphold rigorous quality standards to deliver exceptional products.
Q4. Can I request to change the form of packaging and transportation?
Yes, we offer flexible packaging and transportation options tailored to your preferences.
However, please be aware that any additional costs incurred will be borne by you.
Q5. How does your factory do regarding quality control?
Quality is our paramount concern. From the initial stages to the final touches, we uphold rigorous quality standards to deliver exceptional products.
Q6. How long is the delivery time?
A: Our standard delivery timeframe ranges from 7 to 20 working days post payment confirmation.
For urgent requirements, we offer expedited processing to meet your deadlines.
Q7. What is your Payment?
A: We provide convenient payment options including 100% T/T advance or Western Union for smaller orders.
B: Alternatively, you can choose a 30% T/T upfront payment, with the remaining 70% due before shipment.
C: For larger orders, we accept 100% Irrevocable LC at sight.
Q8: Can you make DDQ (Deep Drawing Quality)?
A: Absolutely, we excel at producing high-quality DDQ material, ideal for manufacturing stainless steel pots, sinks, bowls, and more. Specify your application, and we'll customize the mechanical properties to fulfill your specific needs.
Q9: How to get a sample?
A: We offer FREE samples for your evaluation and testing. In certain cases, we might even cover the courier costs for small pieces.
Q10: Which countries have you exported to?
A: We are proud to have exported our stainless steel materials to various countries, including Vietnam, Thailand, Turkey, Russia, Morocco, South Korea, India, Pakistan, UAE, Ukraine, and many others.
Q11: How do I visit your company?
A: Simply fly into Guangzhou Baiyun International Airport, and we will be there to welcome you and escort you to our facility.
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