| 904L Stainless Steel Coil Specification |
ASTM A240 / ASME SA240 |
| 904L Stainless Steel Coil Manufacturing Process |
Hot Rolled (HR) / Cold Rolled (CR) |
| 904L Stainless Steel Coil Grades |
201 / 304 / 304L/ 904L / 309S / 420 / 316 / 316L / 316Ti / 317L / 321 / 321H / 347 / 347H / 904L etc. |
| UNS No. - UNS S904L, UNS S31008, UNS S31600, UNS S31603, UNS S31603, UNS S31600, UNS S31703, UNS S32100, UNS S34700, UNS S34709, UNS S8904 |
| EN No. 1.4845, 1.4401, 1.4404, 1.4571, 1.4438, 1.4541, 1.4550, 1.4551, 1.4539 |
| 904L Stainless Steel Coil Thickness |
0.6 MM TO 16 MM THICKNESS |
| 904L Stainless Steel Coil Width |
1250 MM / 1500 MM / 2000 MM / 04 Feet / 05 Feet and Custom Cut Width as Per Requirement |
| 904L Stainless Steel Coil Length |
2400 MM / 2420 MM / 6000 MM / 08 Feet / 10 Feet / Coil Cut and Custom Cut Length as Per Requirement |
| 904L 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. |
| 904L Stainless Steel Coil Coating |
PVC coating Normal / Laser, Film: 100 micrometer, Color: black/white. |
| 904L 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. |
| 904L 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 |
| 904L Stainless Steel Coil Packaging |
Loose / Carrate / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps |
| 904L 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 |
| 904L 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 904L is a high-alloy austenitic stainless steel renowned for its exceptional corrosion resistance. The 904L alloy (UNS N08904) is a super austenitic stainless steel designed for diverse process environments, offering moderate to high resistance to various forms of corrosion. Its composition, rich in chromium, nickel, molybdenum, and copper, ensures superior corrosion resistance. With a highly alloyed chemistry (25% nickel and 4.5% molybdenum), 904L surpasses 316L and 317L molybdenum-reinforced stainless steels in resisting chloride stress corrosion cracking, pitting, and general corrosion. Originally developed to withstand dilute sulfuric acid, 904L is also resistant to most organic and inorganic acids, including hot phosphoric acid. Moreover, the 904L alloy is easily weldable and can be fabricated using standard shop procedures.
At Daxun Stainless Steel, we ensure full traceability of every stainless steel coil through our ERP system, documenting type, specification, and origin while advocating for industry anti-counterfeiting measures. Leveraging advanced technology, we set industry benchmarks in precision and quality. Our comprehensive service model spans the product lifecycle: offering expert material selection and processing solutions pre-sale, stringent monitoring during sales, and reliable post-sale service guarantees.
Quality, Delivery, Inspection
- Daxun rigorously conducts multiple quality assurance tests, including flattening tests, pitting and resistance tests, mechanical tests, hardness tests, material positive identification, and expansion tests. These stringent assessments ensure our materials meet the highest application standards.
- Throughout the production process, we meticulously measure the diameter, thickness, and surface quality of our products. Our standard delivery timeframe is 7-15 days, with an extension to 20 days for special size products.
Our delivery schedule strictly adheres to contractual agreements.
- We welcome customer third-party agencies to conduct factory inspections.
- We offer free samples for customer testing.
- We support on-site or video factory inspections for our clients.
Ordering Information
Purchase orders should specify quantity, grade, type or category, API5L reference, thickness, width, length, and any relevant attachments or additional requirements regarding chemical composition, mechanical properties, heat treatment, additional testing, manufacturing process, surface coating, or end finish. Contact Daxun now, and we will respond to your email promptly.
Daxun's stainless steel businesses started flourishing in 2003. Over two decades of rapid advancement, our stainless steel materials and processing businesses have consistently led the forefront of China's industry.
For over 20 years, Daxun has been a stalwart in the international market. In 2022, our export revenues surpassed US$100 million, ranking us among China's top stainless steel trade and processing companies. We have set up three strategic export service bases within China and, in collaboration with engineering firms, steel mills, and international trading companies, continue to elevate our service capabilities to serve the global market effectively.
Daxun International offers comprehensive stainless steel chain supermarket services and maintains enduring partnerships with many renowned steel mills worldwide. With an inventory of 60,000 tons of standard stainless steel and 20,000 tons of specialty metals like duplex steel, nickel-based alloys, and heat-resistant steel, Daxun International guarantees impeccable quality. Our materials adhere strictly to the highest standards in variety, specification, and delivery weight.
Daxun is equipped with advanced steel processing machinery, a state-of-the-art physical and chemical testing center, and a multitude of processing lines including cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying.
Our services span more than 30 industries, encompassing automobiles, home appliances, elevators, new energy, vacuum semiconductors, food & beverage/bio-fermentation, petrochemicals, energy equipment, and more. Collaborating with steel mills, research institutes, and other leading institutions, we offer comprehensive solutions from project design and material development to the optimization of processing and manufacturing techniques.
904L stainless steel belt chemical composition
| Element |
% Present (in product form) |
| Carbon (C) |
0.02 |
| Silicon (Si) |
0.7 |
| Manganese (Mn) |
2 |
| Phosphorous (P) |
0.03 |
| Sulfur (S) |
0.01 |
| Chromium (Cr) |
19.00 - 21.00 |
| Nickel (Ni) |
24.00 - 26.00 |
| Nitrogen (N) |
0.15 |
| Molybdenum (Mo) |
4.00 - 5.00 |
| Copper (Cu) |
1.20 - 2.00 |
| Iron (Fe) |
Balance |
904L stainless steel belt mechanical properties
| Yield Strength |
Ultimate Tensile |
Elongation |
Hardness |
| 0.2% Offset |
Strength |
in 2 in. |
| psi (min.) |
(MPa) |
psi (min.) |
(MPa) |
% (min.) |
(max.) |
| 31,000 |
220 |
71,000 |
490 |
36 |
70-90 Rockwell B |
904L stainless steel belt physical properties
| Reference data on some physical properties |
| Density at 20°C kg/m3 |
8 |
| Thermal Conductivity W/m K at |
20°C |
12 |
| Modulus of Elasticity kN/mm2 at |
20°C |
195 |
| 200°C |
182 |
| 400°C |
166 |
| 500°C |
158 |
| Specific Thermal Capacity at 20°C J/kg K |
450 |
| Electrical Resistivity at 20°C mm2/m |
1 |
What are 904L's best qualities?
- This exceptional grade of stainless steel boasts minimal carbon content and is rich in copper, significantly enhancing its resistance to aggressive acids like sulfuric acid. The high nickel content further fortifies it against stress corrosion cracking. Additionally, it exhibits extraordinary resilience to crevice corrosion and stress corrosion cracking, which can compromise other steel grades. It thrives in a variety of challenging environments, including warm waters and chloride exposure. Thus, it is ideally suited for both moderate and highly aggressive conditions.
- This variant of stainless steel is remarkably heat resistant, enduring temperatures as high as 400 degrees Celsius. It can be heat treated at temperatures ranging from 1090 to 1175 degrees Celsius, followed by rapid cooling. Such heat treatment is highly effective for hardening 904L steel.
- Owing to its composition, this steel is nonmagnetic. It also boasts excellent weldability, formability, and toughness across various conditions.
- 904L steel can be welded using standard methods without the need for pre-heat or post-weld heat treatments.
What is 904L used for?
As previously highlighted, 904L steel is prominently used in the construction of high-quality watches. In industrial applications, its high purity and low sulfur content make it highly esteemed. Some typical applications for 904L include:
- Seawater cooling devices.
- Wiring in electrostatic filtration devices.
- Oil refinery components.
- Gas scrubbing plant parts.
- Machinery for pulp and paper processing.
- Parts in machines used in sulfuric, acetic, and phosphoric acid processing plants.
Fabrication Data
- Alloy 904L is readily weldable and processable using standard shop fabrication practices.
Cold Forming
- 904L is highly ductile and forms with ease. However, the addition of molybdenum and nitrogen may necessitate more robust processing equipment compared to standard 304/304L grades.
Hot Forming
- Hot working procedures for 904L require temperatures between 1562 to 2102°F (850-1150°C). Typically, hot working should be followed by solution anneal and quenching. For 904L, if hot forming is halted at a temperature above 2012°F (1100°C) and the material is quenched immediately, further heat treatment may not be necessary. It is crucial to quench the entire workpiece from above 2012°F (1100°C). If partial heating or cooling falls below 2012°F (1100°C), or if cooling is too slow, hot working should always be followed by solution anneal and quenching. Solution annealing for 904L should be performed at 1940-2084°F (1060-1140°C).
Machining
- The cold work hardening rate of Alloy 904L renders it less machinable than 410 and 304 stainless steels.
Welding
- Alloy 904L is compatible with most conventional welding methods. Austenitic plate materials possess a uniform austenitic structure and balanced distribution of alloying elements. Elements such as molybdenum, chromium, and nickel redistribute during solidification post-welding. These segregations remain in the weld's cast structure and can reduce corrosion resistance in certain scenarios. However, segregation is less pronounced in 904L, typically welded with filler metal of the same composition as the base metal, though it can also be welded without filler metal.
- The recommended welding consumables for 904L are 20 25 CuL covered electrode and 20 25 CuL wire.
What are the applications that 904L stainless steel coils can be used?
Owing to its unparalleled corrosion resistance, the high-grade 904L stainless steel coils are extensively utilized across a multitude of critical applications.
- Petrochemical equipment, including reactors, ensuring long-term durability and safety.
- State-of-the-art heat exchangers that offer exceptional thermal efficiency.
- Power plant flue gas desulfurization devices, enhancing environmental compliance and performance.
- Advanced organic acid treatment systems, delivering superior resistance and reliability.
- Sea water heat exchangers, engineered for maximum resilience in marine environments.
- High-performance paper industry equipment, designed for robust and efficient processing.
- Pharmaceutical and chemical equipment, tailored for precision and safety in production processes.
- Highly durable pressure vessels, ideal for maintaining pressure integrity under extreme conditions.
- Top-quality food equipment, ensuring hygiene and longevity in food processing applications.
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