| 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 superior high-alloy austenitic stainless steel, celebrated for its exceptional corrosion resistance. The 904L alloy (UNS N08904) stands out as a super austenitic stainless steel, versatile across various processes with moderate to high corrosion resistance. Its high chromium and nickel content, fortified with molybdenum and copper, ensures an impressive resistance to corrosion. The alloy's rich chemistry, featuring 25% nickel and 4.5% molybdenum, offers superior resistance to chloride stress corrosion cracking, pitting, and general corrosion compared to 316L and 317L molybdenum-enhanced stainless steels. Initially designed to endure dilute sulfuric acid conditions, the 904L alloy is also resilient against most organic acids and other inorganic acids, including hot phosphoric acid. Furthermore, 904L alloy is easily weldable and can be seamlessly fabricated using standard shop procedures.
Daxun Stainless Steel ensures complete traceability of each stainless steel coil using the ERP system, covering type, specification, and origin, while promoting industry anti-counterfeiting. Leveraging advanced technology for processing and customization, Daxun sets the benchmark for precision and quality in the industry. In terms of service, we advocate for product life cycle management, offering professional material selection and processing solutions before sales, maintaining strict oversight during sales, and guaranteeing worry-free service after sales.
Quality, delivery, inspection
- Daxun conducts a comprehensive array of quality assurance tests, including flattening test, pitting and resistance test, mechanical test, hardness test, material positive identification, expansion test, and more. These meticulous tests ensure the material's suitability for its intended applications.
- Throughout production, we meticulously measure the diameter, thickness, and surface of our products. Our standard delivery window is 7-15 days, with special sizes extending delivery to 20 days.
Delivery timelines are strictly adhered to as per the contract.
- We support customer third-party agency inspections at our factory.
- Offering free samples to customers for testing purposes.
- We facilitate on-site or video factory inspections.
Ordering Information
When placing purchase orders, please include quantity, grade, type or category, API5L reference, thickness, width, length, and any additional requirements related to chemical composition, mechanical properties, heat treatment, extra testing, manufacturing process, surface coating, or end finish. Contact Daxun now for a prompt email response.
Jiangsu Daxun Alloy Co., Ltd. initiated its stainless steel operations in 2003. Over two decades of swift growth, Daxun has solidified its stature as a pioneer in China's stainless steel materials and processing industry, consistently leading the market.
With over 20 years of international experience, Daxun's export revenue surpassed US$100 million in 2022, positioning us among the top stainless steel trade and processing enterprises in China. To better serve global markets, we've established three export service bases in China and partnered with prestigious engineering firms, steel mills, and international trading companies, continuously enhancing our service offerings and expanding our overseas reach.
Daxun International offers comprehensive stainless steel chain supermarket services, maintaining robust, long-term alliances with numerous renowned steel mills globally. Our inventory boasts 60,000 tons of standard stainless steel and 20,000 tons of high-grade metals such as duplex steel, nickel-based alloys, and heat-resistant steel. We guarantee the authenticity and superior quality of our stainless steel materials, ensuring all products meet stringent standards for variety, specifications, and delivery weights.
Equipped with advanced steel processing machinery and a professional physical and chemical testing center, Daxun excels in a multitude of processing lines, including cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying, delivering precision and efficiency in every project.
Our services span over 30 industries, from automobiles and home appliances to new energy and petrochemicals. By collaborating with steel mills, research institutes, and other entities, we offer end-to-end solutions-from project design and material development to processing and manufacturing process optimization-catering to sectors like vacuum semiconductors, food and beverage/bio-fermentation, energy equipment, and more.
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 superior grade of stainless steel, known for its low carbon content, is fortified with high copper levels, enhancing its resistance to potent acids such as sulphuric acid. The elevated nickel content ensures exceptional resistance to stress corrosion cracking. Additionally, 904L stainless steel provides outstanding protection against crevice corrosion and stress corrosion cracking, vulnerabilities common in other steel forms. Ideal for both moderate and aggressive environments, it thrives in demanding conditions, including exposure to warm waters and chlorides.
- 904L stainless steel boasts remarkable heat resistance, enduring temperatures up to an impressive 400 degrees Celsius. It can be heat treated efficiently within a range of 1090 to 1175 degrees Celsius, followed by rapid cooling. This method of heat treatment is highly effective for hardening 904L steel, ensuring optimal performance.
- Due to its unique composition, 904L steel is nonmagnetic, offering superior weldability, formability, and toughness across various scenarios.
- 904L steel can be seamlessly welded using conventional techniques, eliminating the need for pre-heat or post-weld heat treatments.
What is 904L used for?
Renowned for its high purity and low sulfur content, 904L stainless steel is a popular choice in the construction of luxury watches and various industrial applications. Below are some key uses of 904L steel:
- Seawater cooling devices.
- Wiring in electrostatic filtration devices.
- Components in oil refineries.
- Parts for gas scrubbing plants.
- Machinery for pulp and paper processing.
- Components in machinery for sulfuric, acetic, and phosphoric acid processing plants.
Fabrication Data
- Alloy 904L can be seamlessly welded and processed using standard shop fabrication methods.
Cold Forming
- 904L stainless steel exhibits excellent ductility and forms easily. However, the inclusion of molybdenum and nitrogen may necessitate more robust processing equipment compared to standard 304/304L grades.
Hot Forming
- Hot working procedures for 904L steel should be conducted at temperatures ranging from 1562 to 2102°F (850-1150°C). Typically, hot working is followed by a solution anneal and quench. However, if the hot forming of 904L is halted at temperatures above 2012°F (1100°C) and the material is immediately quenched, further heat treatment may not be necessary. It is crucial to ensure the entire workpiece is quenched from temperatures above 2012°F (1100°C). If partial heating or cooling falls below this threshold, or if cooling is too slow, hot working should be followed by solution annealing and quenching. 904L should undergo solution annealing at 1940-2084°F (1060-1140°C).
Machining
- With a cold work hardening rate higher than 410 and 304 stainless steels, Alloy 904L poses some machinability challenges.
Welding
- Alloy 904L is compatible with most conventional welding techniques. Thanks to its uniform austenitic structure and balanced distribution of alloying elements, the segregation seen in other alloys is minimal. During solidification post-welding, elements like molybdenum, chromium, and nickel may segregate. This segregation, less pronounced in 904L, can affect corrosion resistance but is typically managed by welding with filler metals matching the base composition, though welding without filler metal is also feasible.
- The recommended welding consumables for 904L are 20 25 CuL covered electrodes and 20 25 CuL wire.
What are the versatile applications for which 904L stainless steel coils are ideally suited?
Thanks to their exceptional corrosion resistance, the superior-quality 904L stainless steel coils from Jiangsu Daxun Alloy Co., Ltd. find extensive application in the following industries:
- Petrochemical equipment, including reactors, where durability is crucial.
- Heat exchangers, offering reliable performance and longevity.
- Power plant flue gas desulfurization devices, ensuring efficient operation in harsh environments.
- Organic acid treatment systems, where resistance to corrosion is essential.
- Sea water heat exchangers, providing unmatched durability in marine conditions.
- Paper industry equipment, supporting high corrosion resistance for long-term use.
- Pharmaceutical and other chemical equipment, ensuring purity and durability.
- Pressure vessels, where strength and stability are paramount.
- Food equipment, maintaining hygiene and resistance to corrosion.
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