| 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 |
A Global Leader in Stainless Steel Coil Fabrication Services
Type 904L is a premium high-alloy austenitic stainless steel celebrated for its exceptional corrosion resistance. The 904L alloy (UNS N08904) is a super austenitic stainless steel suitable for various process environments, offering moderate to high corrosion resistance. Its rich composition of high chromium and nickel, combined with molybdenum and copper, ensures superior to outstanding resistance against corrosion. With a highly alloyed chemistry comprising 25% nickel and 4.5% molybdenum, 904L surpasses 316L and 317L molybdenum-enhanced stainless steels in resisting chloride stress corrosion cracking, pitting, and general corrosion. Originally designed to endure dilute sulfuric acid conditions, 904L also demonstrates resilience against most organic acids and several inorganic acids, including hot phosphoric acid. The 904L alloy is easily weldable and manageable using conventional shop fabrication methods.
At Daxun Stainless Steel, we realize the complete traceability of each stainless steel coil from our ERP system, including type, specification, and origin. We advocate and encourage industry anti-counterfeiting measures. Leveraging advanced technology, we lead in the processing and customization of stainless steel, setting benchmarks for precision and quality. Our service philosophy embraces product lifecycle management, offering expert material selection and processing solutions before sales, stringent quality control during sales, and worry-free service guarantees post-sales.
Quality, Delivery, and Inspection
- Daxun conducts a comprehensive suite of quality assurance tests to ensure material suitability for required applications. These tests include flattening, pitting and resistance, mechanical, hardness, material positive identification, and expansion tests, among others.
- Throughout the production process, we meticulously measure the diameter, thickness, and surface quality of our products. Our standard delivery timeframe is 7-15 days. For special size requirements, the delivery period may extend up to 20 days.
Our delivery schedule strictly adheres to the contractual agreements.
- We support inspections by customer-appointed third-party agencies at our factory.
- We offer free samples to customers for testing purposes.
- We accommodate on-site or video factory inspections.
Ordering Information
Purchase orders should include details such as 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.
Daxun's illustrious journey in the stainless steel industry commenced in 2003. Over two transformative decades, we have ascended to the pinnacle of China's stainless steel materials and processing sectors. Our unwavering commitment to quality and innovation has firmly established us as industry leaders.
With over 20 years of international market experience, Daxun has solidified its status as a global stainless steel powerhouse. In 2022, we proudly surpassed US$100 million in export revenue, positioning ourselves among China's elite stainless steel trade and processing companies. Our three strategically located export service bases in China, in collaboration with engineering firms, steel mills, and international trading companies, ensure our exceptional service capabilities and continual market expansion.
Daxun International delivers comprehensive stainless steel chain supermarket services, maintaining robust long-term partnerships with globally renowned steel mills. Our inventory boasts 60,000 tons of standard stainless steel and an additional 20,000 tons of specialty metals, including duplex steel, nickel-based alloys, and heat-resistant steel. We guarantee the authenticity and superior quality of our stainless steel materials, adhering strictly to all required standards in terms of variety, specifications, and delivery weights.
Equipped with advanced steel processing machinery, Daxun prides itself on its state-of-the-art physical and chemical testing center. Our extensive processing lines encompass cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying, ensuring precision and excellence in every project.
Our services span over 30 diverse industries, including automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, and energy equipment. In collaboration with steel mills, research institutes, and other entities, we offer integrated solutions from project design and material development to process optimization in 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?
- The 904L stainless steel grade is renowned for its low carbon content and substantial copper composition, which enhances its resistance to potent acids like sulphuric acid. Its high nickel concentration offers superior resistance to stress corrosion cracking. Additionally, it is exceptionally resilient against crevice corrosion and stress corrosion cracking that may affect other steel types. This adaptability makes it ideal for various challenging environments, including exposure to warm waters and chlorides, making it suitable for both moderate and harsh conditions.
- 904L stainless steel boasts remarkable heat resistance, enduring temperatures as high as 400 degrees Celsius. It can be heat treated at temperatures from 1090 to 1175 degrees Celsius, followed by rapid cooling. This heat treatment process is optimal for hardening 904L steel.
- Due to its unique composition, 904L stainless steel is nonmagnetic. It excels in weldability, formability, and toughness across diverse applications.
- 904L steel can be effortlessly welded using conventional methods, with no requirement for pre-heat or post-weld heat treatments.
What is 904L used for?
As previously mentioned, 904L stainless steel is a preferred material in watch construction, appreciated for its high purity and low sulfur content. Its applications extend to several industrial sectors, including:
- Seawater cooling devices.
- Wiring in electrostatic filtration devices.
- Components in oil refineries.
- Parts in gas scrubbing plants.
- Machinery for pulp and paper processing.
- Components in machines used for processing sulfuric, acetic, and phosphoric acids.
Fabrication Data
- Alloy 904L can be seamlessly welded and processed using standard shop fabrication practices.
Cold Forming
- 904L stainless steel is highly ductile and easily formable. However, the addition of molybdenum and nitrogen necessitates more robust processing equipment compared to standard 304/304L grades.
Hot Forming
- Hot working procedures for 904L require temperatures between 1562°F and 2102°F (850-1150°C). Typically, hot working should be followed by solution annealing and quenching. If hot forming ceases above 2012°F (1100°C) and the material is quenched immediately, further heat treatment may not be needed. It is crucial to quench the entire workpiece from temperatures above 2012°F (1100°C). If partial heating or cooling occurs below this temperature or if cooling is too slow, hot working should always be followed by solution annealing and quenching. The recommended solution annealing temperature range is 1940-2084°F (1060-1140°C).
Machining
- Due to its cold work hardening rate, Alloy 904L is less machinable than 410 and 304 stainless steels.
Welding
- Alloy 904L is compatible with most conventional welding methods. Its austenitic plate materials offer a uniform structure and balanced alloying element distribution. During welding, elements such as molybdenum, chromium, and nickel redistribute within the cast structure, which can reduce corrosion resistance in some cases. However, segregation is less pronounced in 904L, which is typically welded with filler metal of the same composition as the base metal but can also be welded without filler metal.
- Welding consumables for 904L include 20 25 CuL covered electrodes and 20 25 CuL wire.
What are the diverse applications for 904L stainless steel coils?
Thanks to its outstanding corrosion resistance, the high-grade 904L stainless steel coils are ideal for the following applications:
- Petrochemical equipment, reactor systems
- Advanced heat exchangers
- Power plant flue gas desulfurization devices
- Organic acid treatment systems
- Marine-grade sea water heat exchangers
- Cutting-edge paper industry equipment
- Pharmaceutical industry and various chemical equipment
- Robust pressure vessels
- High-standard food processing equipment
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