| 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 that is renowned for its corrosion resistance. The 904L alloy (UNS N08904) is a super austenitic stainless steel with moderate to high resistance in various process settings. Thanks to its high chromium and nickel content, combined with molybdenum and copper, it guarantees excellent corrosion resistance. Boasting a highly alloyed chemistry with 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 crafted to endure dilute sulfuric acid conditions, it also withstands most organic and inorganic acids, including hot phosphoric acid. The 904L alloy is effortlessly weldable and manageable with standard shop fabrication techniques.
Daxun Stainless Steel ensures full traceability of each stainless steel coil via its ERP system, detailing type, specification, and origin, while championing industry anti-counterfeiting measures. Leveraging cutting-edge technology for processing and customization, Daxun sets the industry benchmark for precision and quality. It supports product lifecycle management, offering expert material selection and processing solutions pre-sale, rigorous monitoring during sales, and comprehensive after-sales service guarantees.
Quality, Delivery, Inspection
- Daxun performs a battery of quality assurance tests, including flattening, pitting and resistance, mechanical, hardness, material positive identification, and expansion tests. These rigorous tests confirm that the material meets the precise requirements for its intended applications.
- Throughout production, we meticulously measure the product's diameter, thickness, and surface. Our standard delivery timeframe spans 7-15 days, extending to 20 days for special size products.
Our delivery schedule adheres strictly to the contract terms.
- We welcome third-party agencies for factory inspections.
- We offer free samples to customers for testing purposes.
- We support on-site or 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, additional testing, manufacturing process, surface coating, or end finish. Contact Daxun now for a prompt response to your inquiry.
Since its inception in 2003, Jiangsu Daxun Alloy Co., Ltd. has been a pioneer in the stainless steel industry. With two decades of rapid growth, Daxun has consistently led the forefront of China's stainless steel materials and processing sector.
For over 20 years, Daxun has carved a formidable presence in the international market. In 2022, the company's export revenue surpassed US$100 million, positioning it among China's elite stainless steel trade and processing enterprises. Daxun proudly operates three export service bases across China, collaborating with engineering firms, steel mills, and global trading entities to enhance our international footprint and continuously elevate our service capabilities.
Daxun International delivers unparalleled stainless steel chain supermarket services, backed by enduring collaborations with numerous prestigious steel mills globally. We maintain a robust inventory of 60,000 tons of standard stainless steel and 20,000 tons comprising duplex steel, nickel-based alloys, and heat-resistant steel, ensuring reliable, genuine, and high-quality materials. Our comprehensive product range meets stringent standards for variety, specification, and delivery weight.
Equipped with advanced steel processing machinery and a state-of-the-art physical and chemical testing center, Daxun boasts extensive processing capabilities, including cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying.
Our services span over 30 diverse industries such as automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, and petrochemicals. Partnering with steel mills and research institutes, we offer integrated solutions encompassing project design, material development, and process optimization for manufacturing.
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 contains a minimal amount of carbon, which enhances its resistance to various strong acids, particularly sulphuric acid, due to its high copper content. Its substantial nickel concentration offers superior resistance to stress corrosion cracking. Additionally, 904L stainless steel exhibits remarkable resilience against crevice corrosion and stress corrosion cracking that often impairs other steel types. Ideal for use in a variety of challenging environments, including exposure to warm waters and chloride, it is versatile enough for both moderate and aggressive conditions.
- 904L stainless steel boasts extraordinary heat resistance, enduring temperatures as high as 400 degrees Celsius. It is also highly heat-treatable, with effective treatments conducted at temperatures ranging from 1090 to 1175 degrees Celsius followed by rapid cooling. This type of heat treatment significantly enhances the hardening properties of 904L steel, making it an excellent choice for applications requiring superior strength and durability.
- The composition of 904L stainless steel renders it nonmagnetic, while also providing outstanding weldability, formability, and toughness across a wide range of conditions. Its versatility makes it suitable for numerous applications requiring these specific properties.
- 904L steel can be flawlessly welded using standard techniques without the need for pre-heating or post-weld heat treatments, streamlining the welding process and ensuring strong, durable joints.
What is 904L used for?
904L steel is renowned for its use in watchmaking, owing to its high purity and low sulfur content. In industrial environments, it is highly valued for these same properties. Noteworthy applications of 904L steel include:
- Seawater cooling devices.
- Wiring in electrostatic filtration devices.
- Oil refinery components.
- Gas scrubbing plant parts.
- Machinery for pulp and paper processing.
- Components in machinery for sulfuric, acetic, and phosphoric acid processing plants.
Fabrication Data
- Alloy 904L is easily welded and processed using standard shop fabrication practices, making it an adaptable choice for diverse manufacturing needs.
Cold Forming
- 904L stainless steel is highly ductile and easily formable. However, the addition of molybdenum and nitrogen means more powerful processing equipment may be required compared to standard 304/304L grades, ensuring the material can be effectively shaped and utilized.
Hot Forming
- Hot working of 904L requires temperatures between 1562 and 2102°F (850-1150°C). Typically, hot working should be followed by solution annealing and quenching. For 904L, if hot forming ends 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 temperatures above 2012°F (1100°C). If any part is heated or cooled below 2012°F (1100°C) or if cooling is too slow, hot working must be followed by solution annealing and quenching. The solution annealing range for 904L is 1940-2084°F (1060-1140°C).
Machining
- Due to its cold work hardening rate, Alloy 904L is less machinable compared to other stainless steels like 410 and 304, necessitating more robust machining practices.
Welding
- Alloy 904L is compatible with most conventional welding methods. Its uniform austenitic structure and balanced distribution of alloying elements like molybdenum, chromium, and nickel reduce the risk of deleterious segregation during solidification post-welding. Typically, 904L is welded using filler metals of the same composition, although welding without filler metal is also feasible.
- Welding consumables for 904L include 20 25 CuL covered electrodes and 20 25 CuL wire, ensuring high-quality welds that maintain the material's superior properties.
In what applications can 904L stainless steel coils be utilized?
Benefiting from its exceptional corrosion resistance, premium-grade 904L stainless steel coils find extensive use in a diverse array of applications.
- Petrochemical equipment, reactors
- Heat exchangers
- Power plant flue gas desulfurization devices
- Organic acid treatment systems
- Sea water heat exchangers
- Paper industry machinery
- Pharmaceutical and other chemical processing equipment
- Pressure vessels
- Food processing equipment
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