| 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 |
Global Leader in Stainless Steel Coil Fabrication Services
Type 409 Stainless Steel (UNS S40900) is an exceptional stabilized ferritic stainless steel renowned for its superior oxidation and corrosion resistance compared to carbon steel. Its ease of manufacture, combined with its corrosion resistance and affordability, has markedly expanded its use in automotive exhaust systems and various non-automotive applications. According to ASTM A240, Type 409 stainless steel is categorized into three subcategories: UNS S40910, UNS S40920, and UNS S40930, each with specific Ti or Nb stabilization requirements. Unless specified otherwise by the purchaser, any of these compositions may be referred to as UNS S40900. Known in the industry as "High Performance" or "Ultra Form," this material is engineered with enhanced formability properties.
Daxun Stainless Steel ensures complete traceability of each stainless steel coil through an advanced ERP system, detailing type, specification, and origin. We champion industry anti-counterfeiting measures. Leveraging cutting-edge technology, Daxun Stainless Steel sets the benchmark for precision and quality in processing and customization. Our service ethos encompasses the entire product life cycle, offering expert material selection and processing solutions pre-sale, rigorous monitoring during sales, and comprehensive after-sales service guarantees.
Quality, Delivery, Inspection
- Daxun conducts extensive quality assurance tests, including flattening, pitting and resistance, mechanical, hardness, material positive identification, and expansion tests. These rigorous procedures ensure that the material meets all required applications.
- During production, we meticulously measure the product's diameter, thickness, and surface finish. Our standard delivery time ranges from 7-15 days. For special size products, the delivery time may extend to 20 days.
Our delivery schedule strictly adheres to the contractual agreement.
- We support customer third-party agencies for factory inspections.
- Free samples are available to customers for testing.
- We offer both on-site and video factory inspections.
Ordering Information
Purchase orders should specify quantity, grade, type or category, API5L reference, thickness, width, length, and any additional requirements related to chemical composition, mechanical properties, heat treatment, testing, manufacturing process, surface coating, or end finish. Contact Daxun now for a prompt response to your inquiry.
Daxun's journey in the stainless steel business began in 2003. With two decades of relentless progress, it has firmly positioned itself at the forefront of China's stainless steel industry, setting benchmarks in material quality and processing prowess.
For over 20 years, Daxun has been a key player in the global market. In 2022, our export revenue surpassed US$100 million, placing us among China's elite in stainless steel trade and processing. We operate three dedicated export service bases in China, collaborating with engineering firms, steel mills, and international trading companies to cater to overseas markets. Our commitment to enhancing service capabilities is unwavering, driving us to expand our reach and refine our expertise continuously.
Daxun International offers a comprehensive stainless steel chain supermarket service, boasting long-term partnerships with renowned steel mills worldwide. We maintain an impressive inventory of 60,000 tons of standard stainless steel, alongside 20,000 tons of specialized metals such as duplex steel, nickel-based alloys, and heat-resistant steel. Our stainless steel materials guarantee reliability and authenticity, with a strict adherence to industry standards in variety, specification, and delivery weight.
Daxun is equipped with a diverse array of steel processing machinery, complemented by a state-of-the-art physical and chemical testing center. Our advanced processing lines include cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying, ensuring precision and excellence in every output.
Our services extend across more than 30 industries, encompassing automobiles, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, and energy equipment. By partnering with steel mills, research institutes, and various institutions, we deliver integrated solutions from project design and material development to optimized processing and 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?
Indeed, we can tailor the packaging and transportation forms according to your specific requests,
however, please note that you will be responsible for any additional costs and the price differences incurred during this period.
Q5. How does your factory ensure quality control?
Quality is our utmost priority. We consistently place significant emphasis on maintaining high standards from the very beginning to the final stages of production.
Q6. What is the estimated delivery time?
A: Typically, it ranges from 7 to 20 working days after payment confirmation.
If your order is urgent, we will expedite the process to complete it ahead of schedule.
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) materials?
A: Absolutely. Our materials are suitable for stainless steel pots, sinks, bowls, etc. Please inform us of your specific use, and we will adjust the mechanical properties to meet your requirements.
Q9: How can I obtain a sample?
A: FREE samples are available for your assessment. If you need a small piece, we can cover courier costs depending on the situation.
Q10: Which countries have you exported to?
A: To date, we have exported our stainless steel materials to Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, UAE, Ukraine, and more.
Q11: How can I visit your company?
A: Take a flight to Guangzhou Baiyun International Airport, and we will arrange to pick you up.
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