| 409/409L Stainless Steel Coil Specification |
ASTM A240 / ASME SA240 |
| 409/409L Stainless Steel Coil Manufacturing Process |
Hot Rolled (HR) / Cold Rolled (CR) |
| 409/409L Stainless Steel Coil Grades |
201 / 304 / 304L/ 409/409L / 309S / 420 / 316 / 316L / 316Ti / 317L / 321 / 321H / 347 / 347H / 904L etc. |
| UNS No. - UNS S409/409L, UNS S31008, UNS S31600, UNS S31603, UNS S31603, UNS S31600, UNS S31703, UNS S32100, UNS S34700, UNS S34709, UNS S8904 |
| EN No. 1.4512,1.4845, 1.4401, 1.4404, 1.4571, 1.4438, 1.4541, 1.4550, 1.4551, 1.4539 |
| 409/409L Stainless Steel Coil Thickness |
0.6 MM TO 16 MM THICKNESS |
| 409/409L Stainless Steel Coil Width |
1250 MM / 1500 MM / 2000 MM / 04 Feet / 05 Feet and Custom Cut Width as Per Requirement |
| 409/409L Stainless Steel Coil Length |
2400 MM / 2420 MM / 6000 MM / 08 Feet / 10 Feet / Coil Cut and Custom Cut Length as Per Requirement |
| 409/409L Stainless Steel Coil Surface Finish |
2B, 2D, BA, MATT, MATT PVC, No.4, No.5, SB, HR, No.8, Mirror, Hairline, Brush, Textured, Oil base wet Polished, Both sides Polished available. |
| 409/409L Stainless Steel Coil Coating |
PVC coating Normal / Laser, Film: 100 micrometer, Color: black/white. |
| 409/409L Stainless Steel Coil Other Testing |
NACE MR0175, Ultrasoung TEST, IGC TEST, Intergranular Corrrosion Test as per ASTM A262 Practice E, Charpy Impact Test, Macro, Grain Size, Hardness, etc. |
| 409/409L Stainless Steel CoilValue Added Services |
Gas Cutting / CNC Plasma Cutting / Profiling / Rolling / Bending / Sheet Metal Fabrication / Drill / Punch / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| 409/409L Stainless Steel Coil Packaging |
Loose / Carrate / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps |
| 409/409L Stainless Steel Coil Shipment & Transportation |
By Road - Truck / Train Partial Load, Full Load, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| 409/409L Stainless Steel Coil Material Test Certificate |
Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS, Bureau of Indian Standards BIS Approved ETC |
| Manufacturer |
POSCO, Aperam, Jindal Stainless, DKC Korea, Thyssenkrup, Baosteel, TISCO,Arcelor Mittal, VDM,Nippon Metal,Qingshan,Delong. |
| Shipping Port |
Shanghai/Ningbo port/Tianjin/Qindao |
A Global Pioneer in Stainless Steel Coil Fabrication Services
Type 409 Stainless Steel (UNS S40900) stands out as a stabilized ferritic stainless steel, boasting superior oxidation and corrosion resistance compared to carbon steel. Its ease of manufacture, coupled with its impressive corrosion resistance and affordability, has significantly expanded its applications in automotive exhaust systems and beyond. As specified by ASTM A240, Type 409 stainless steel includes three subcategories: UNS S40910, UNS S40920, and UNS S40930, each with distinct Ti or Nb stabilization requirements. Unless specified otherwise, any of these compositions may be supplied as UNS S40900. This remarkable material is also known in the industry for its enhanced formability, marketed under the names 'High Performance' or 'Ultra Form'.
Daxun Stainless Steel ensures full traceability of each stainless steel coil through our ERP system, detailing type, specification, and origin, while actively promoting industry anti-counterfeiting measures. Leveraging cutting-edge technology for processing and customization, we set the industry benchmark with our high precision and superior quality. Our comprehensive service approach includes pre-sales professional material selection and processing solutions, rigorous in-sales monitoring, and reliable post-sales service guarantees, solidifying our commitment to product life cycle management.
Excellence in Quality, Timely Delivery, Rigorous Inspection
- At Daxun, we conduct a series of stringent quality assurance tests, including flattening tests, pitting and resistance tests, mechanical tests, hardness tests, material positive identification, and expansion tests. These rigorous examinations ensure that our materials meet the highest standards for their intended applications.
- Throughout our production process, meticulous measurements of diameter, thickness, and surface quality are conducted. Our standard delivery timeframe is 7-15 days; however, for special size products, this may extend to 20 days to ensure precision and quality.
Our delivery schedule adheres strictly to the contractual agreements.
- We welcome third-party agency inspections at our factory to ensure quality and transparency.
- We offer free samples to our customers for quality testing and approval.
- We facilitate both on-site and video inspections of our factory to provide customers with utmost assurance.
Ordering Information
Purchase orders should detail the quantity, grade, type or category, API5L reference, thickness, width, length, and any additional requirements related to chemical composition, mechanical properties, heat treatment, additional testing, manufacturing process, surface coating, or end finish. Contact Daxun now, and we will respond to your inquiry promptly.
Daxun's stainless steel journey commenced in 2003. With two decades of relentless growth, our stainless steel materials and processing business have proudly positioned themselves at the pinnacle of China's industry.
For over 20 years, Daxun has excelled in international business. In 2022, our export revenues soared past US$100 million, cementing our status among China's top stainless steel trade and processing entities. We've established three robust export service bases in China, collaborating with engineering firms, steel mills, and global trading companies to serve the international markets. Our ongoing efforts to enhance service capabilities are evident through our expansive global collaborations.
Daxun International offers unparalleled stainless steel chain supermarket services through enduring partnerships with renowned global steel mills. With an impressive stock of 60,000 tons of standard stainless steel and 20,000 tons of specialized metals such as duplex steel, nickel-based alloys, and heat-resistant steel, we guarantee authentic and superior quality. Our range, specifications, and delivery weights are meticulously aligned with industry standards.
Equipped with advanced steel processing machinery and a state-of-the-art physical and chemical testing center, Daxun boasts comprehensive processing lines that include cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying.
Our services span over 30 industries, including automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, and energy equipment. Partnering with steel mills and research institutes, we deliver integrated solutions from project design and material development to process optimization in manufacturing.
409409 Stainless Steel Coil Chemical Composition
| Element |
UNS S40910 |
UNS S40920 |
UNS S40930 |
| Carbon |
0.030 max. |
0.030 max. |
0.030 max |
| Manganese |
1.00 max. |
1.00 max. |
1.00 max. |
| Sulfur |
0.020 max. |
0.020 max |
0.020 max |
| Phosphorus |
0.040 max. |
0.040 max. |
0.040 max. |
| Silicon |
1.00 max. |
1.00 max. |
1.00 max. |
| Chromium |
10.5 - 11.7 |
10.5 - 11.7 |
10.5 - 11.7 |
| Nickel |
0.50 max. |
0.50 max. |
0.50 max. |
| Nitrogen |
0.030 max. |
0.030 max. |
0.030 max. |
| Titanium |
6x(C+N) min. - 0.50 max. |
8X(C+N)min. / 0.15 - 0.50 |
0.05 min. |
| Niobium |
0.17 max. |
0.10 max. |
|
| Ti + Nb |
|
|
[0.08+8x(C+N)] min. - 0.75 max. |
409 Stainless Steel Coil Mechanical Properties
| Type |
Yield Strength 0.2% offset (KSI) |
Tensile Strength (KSI) |
% Elongation (2″ Gauge length) |
| S40910 |
25 min. |
55 min |
20 min. |
| S40920 |
25 min. |
55 min. |
20 min. |
| S40930 |
25 min. |
55 min. |
20 min. |
409 Stainless Steel Coil Physical Properties
| Density (lb./ in^2) @ RT |
|
0.28 |
| Modulus of Elasticity in Tension (psi x 10^6) |
|
29 |
| Specific Heat (BTU/o F/lb.) |
32 to 212 oF |
0.114 |
| Thermal Conductivity (BTU/hr/ft^2/ft) |
212oF |
14.4 |
| Mean Coefficient of Thermal Expansion (in. x 10^-6 per o F) |
32 to 212oF |
5.84 |
| |
32 to 500oF |
6.12 |
| |
32 to 900oF |
6.6 |
| |
32 to 1,200oF |
6.86 |
| Electrical Resistivity (micro ohms - cm) |
at 70oF |
60 |
| Oxidation Resistance - Continuous Service(oF) |
|
1450 |
Grade 409
- Grade 409 is titanium-stabilized ferritic stainless steel. Grade 409, a general-purpose chromium stainless steel, is mostly used for automotive exhaust systems. This material is suitable for applications that prioritize mechanical qualities, corrosion resistance, and weldability over appearance, especially at high temperatures.
- ASTM requirements, including ASTM A240M for flat rolled steel, now use S40910, S40920, and S40930 as "sub-grades" instead of generic grade 409.
- These are stabilised to varying degrees with titanium, niobium, or a combination of the two.Any of these could be certified as S40900 (Grade 409). ASTM A268M only lists standard Grade 409 for covering tubes.
Corrosion Resistance:
- Grade 409 is resistant to both atmospheric and exhaust gas corrosion. In most environments, a light surface rust develops, which prevents further corrosion but is not suitable for cosmetic purposes. Corrosion resistance is comparable to 3CR12 and 12% chromium martensitic grades (410), but lower than 17% chromium grade 430.
Heat resistance
- 409 is resistant to scaling in intermittent service up to 815°C and continuous service up to 675°C. However, these temperatures vary according on the specific service environment.
Heat Treatment
- Annealing Heat to 790-900 degrees Celsius and then cool with air. This grade cannot be toughened through heat treatment.
Welding
- Easy to weld, however a pre-heat of 150-260°C is suggested. Although Grade 409 or Grade 430 electrodes or filler rods can be used, welding using Grade 309 rods or electrodes is pre-qualified per AS 1554.6. These austenitic fillers produce a more ductile weld.
- Post-weld annealing at 760-815°C increases weld ductility.
Welding tiny sections does not require post-weld annealing. Automotive exhaust tubing is usually welded without filler metal (autogenously).
To avoid the impacts of grain formation, all welding must be done with as little heat as possible.
Typical Applications
Automotive exhaust systems, such as catalytic converters and mufflers.
Specified Properties
- ASTM A268M specifies the parameters of Grade 409 for annealed tubing. ASTM A240M specifies the composition of additional grades for coil and sheet applications. Other items' specifications may include similar but not identical properties.
FORMING:
- 409 stainless can be cut, blanked stretch formed and drawn without difficulty. The formability characteristics of Type 409 are very similar to carbon steel.
Q1: What products can you offer?
A: We can offer you general steel types like 310S, 316L,304.304L.201,904L, 316H, 316,316L 300and
400 series, and duplex stainless steel like 2205, 2304,2101,2507,etc. 904L, 800H, 600H high-nickel alloy.
Q2. Can you produce the products according to my own drawings?
Yes, we can produce the products according to your drawings that will be most satisfy you.
Q3. How does your factory do regarding quality control?
Quality is a priority. We always attach great importance to quality controlling from the beginning to end.
Q4. Can I request to change the form of packaging and transportation?
Yes, we can modify the packaging and transportation methods to align with your specific requests,
however, you will need to cover any additional costs and differences incurred during this period.
Q5. How does your factory handle quality control?
Quality is our utmost priority. We consistently place great emphasis on quality control from the very beginning to the final stages.
Q6. What is the expected delivery time?
A: Delivery takes approximately 7 to 20 working days after payment confirmation.
If the order is urgent, we will expedite the process to complete it in advance.
Q7. What are your payment terms?
A: 100% T/T in advance, Western Union (For Small Orders)
B: 30% T/T upfront and the remaining 70% before shipment
C: 100% Irrevocable LC at sight (For Large Orders)
Q8: Can you produce DDQ (Deep Drawing Quality)?
A: Yes, we can. Our material is suitable for manufacturing stainless steel pots, sinks, bowls, etc. Inform us of your specific usage, and we will adjust the mechanical properties accordingly to meet your requirements.
Q9: How can I obtain a sample?
A: FREE samples are available for your inspection and testing. If you need a small piece, we can cover the courier cost, depending on the situation.
Q10: To which countries have you exported?
A: To date, we have exported stainless steel materials to the following countries: Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, UAE, Ukraine, and others.
Q11: How can I visit your company?
A: Fly to Guangzhou Baiyun International Airport, and we will pick you up from there.
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