Alloy 904L Round Bars Manufacturer, Stockist and Exporter
Alloy 904L Round Bars are high-performance austenitic stainless steel bars known for their exceptional corrosion resistance and superior strength. Composed mainly of nickel, chromium, molybdenum, and copper, these bars offer outstanding protection against reducing acids such as sulphuric and phosphoric acid. The low carbon content enhances their resistance to intergranular corrosion, ensuring long-term durability in harsh conditions. Alloy 904L is widely recognized for its high resistance to pitting and crevice corrosion caused by chloride environments. Its excellent formability and weldability make it a preferred material for industrial fabrications and precision applications. The alloy’s combination of strength and corrosion resistance ensures longevity even in challenging environments. These properties make Alloy 904L Round Bars suitable for high-demand industries worldwide.
One of the most impressive qualities of Alloy 904L Round Bars is their ability to withstand harsh chemical environments without losing mechanical integrity. The addition of molybdenum and copper gives them superior resistance to acid attacks compared to conventional stainless steels. They perform exceptionally well in conditions containing chlorides, acetic acid, and sulphuric acid, where other materials might fail. These bars maintain their performance even at high temperatures, making them a suitable choice for heat exchangers and condensers. Their high nickel content also provides excellent stress-corrosion cracking resistance, ensuring consistent reliability. Due to this, Alloy 904L is often used in marine, offshore, and chemical industries. It provides a long-lasting solution where strength and anti-corrosive properties are critical.
The mechanical properties of Alloy 904L Round Bars make them ideal for heavy-duty applications in various sectors. They exhibit high tensile and yield strength, allowing them to endure heavy mechanical loads and stress. Their elongation and hardness levels also make them suitable for machining, forming, and fabrication processes. The combination of mechanical toughness and flexibility ensures ease of processing without compromising material performance. These properties make 904L Round Bars a reliable choice for shafts, fasteners, and structural parts. Even in conditions involving high mechanical stress, they maintain stability and structural integrity. Industries value their dependable performance and longevity under pressure.
Worldwide Alloy 904L Round Bars Manufacturer, Stockist and Exporter
In terms of chemical composition, Alloy 904L contains approximately 20% chromium, 25% nickel, and 4.5% molybdenum, with small additions of copper and manganese. This unique combination of elements enhances resistance to both oxidation and reduction environments. The copper addition is particularly beneficial for dealing with sulphuric acid and other aggressive chemicals. Low carbon levels prevent carbide precipitation during welding, ensuring the alloy retains its corrosion resistance. These elements work synergistically to make 904L a superior material compared to standard grades like 316L or 317L. The material’s chemical stability makes it suitable for use in chemical plants, acid production, and fertilizer manufacturing. Each composition element plays a critical role in ensuring durability and reliability in performance.
The versatility of Alloy 904L Round Bars extends to their wide range of dimensions, surface finishes, and conditions. They can be supplied in cold-drawn, hot-rolled, or centerless ground conditions depending on application requirements. Available sizes range from small-diameter precision rods to large-diameter heavy-duty bars. Finishes include polished, bright, black, and custom-machined surfaces. These bars can also be cut, bent, or machined into customized components. Dimensional accuracy and tolerance control ensure compatibility with diverse industrial uses. Each bar undergoes strict quality inspection and testing before dispatch to maintain international standards.
Alloy 904L Round Bars find applications across a broad range of industries including marine engineering, petrochemical, pharmaceuticals, and power generation. They are often used in heat exchangers, condensers, gas scrubbing systems, and chemical processing equipment. Their ability to resist chloride-induced corrosion makes them perfect for seawater cooling systems and offshore platforms. In the oil and gas sector, these bars perform exceptionally well under high temperature and pressure conditions. The pharmaceutical industry values them for their non-reactive nature and hygienic properties. In power generation, they are used in turbine components and piping systems. The versatility of Alloy 904L ensures its presence in almost every corrosion-prone environment.
Overall, Alloy 904L Round Bars provide a reliable, durable, and cost-effective solution for industries requiring top-tier corrosion resistance and strength. Their unique chemical composition and mechanical properties make them superior to conventional stainless steels in aggressive chemical conditions. With excellent weldability, machinability, and formability, these bars offer flexibility in manufacturing and design. They are an ideal material for long-lasting industrial solutions, reducing maintenance costs and downtime. Their performance in seawater, acid environments, and high-temperature applications is unmatched. These bars meet various international standards such as ASTM B649 and UNS N08904. Alloy 904L Round Bars continue to be the preferred choice for engineers and fabricators seeking performance and dependability.
Alloy 904L Round Bars Specifications
| Specification | Details |
|---|---|
| Standard | ASTM B649 / ASME SB649 |
| Grade | Alloy 904L (UNS N08904) |
| Form | Round Bars, Bright Bars, Hex Bars, Square Bars, Forged Bars, Flat Bars, Rods |
| Size Range | 5 mm to 500 mm Diameter (Custom sizes available on request) |
| Length | 100 mm to 6000 mm (Cut lengths available) |
| Finish | Bright, Black, Polished, Peeled, Turned, Ground |
| Standards Equivalent | EN 1.4539, ASTM B649, ASME SB649, DIN 1.4539 |
| Manufacturing Technique | Hot Rolled, Cold Drawn, Centerless Ground |
| Certification | EN 10204/3.1, 3.2 Test Certificates Available |
| Testing | UT, PMI, IGC, Hardness, Mechanical, and Chemical Tests |
Chemical Composition
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 23.0 – 28.0 |
| Chromium (Cr) | 19.0 – 23.0 |
| Molybdenum (Mo) | 4.0 – 5.0 |
| Copper (Cu) | 1.0 – 2.0 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 |
| Carbon (C) | ≤ 0.020 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.035 |
| Iron (Fe) | Balance |
Mechanical Properties
| Property | Value | Unit |
|---|---|---|
| Tensile Strength (Min) | 490 | MPa |
| Yield Strength (0.2% Offset, Min) | 220 | MPa |
| Elongation (Min) | 35 | % |
| Hardness (Brinell, Max) | 90 | HB |
| Modulus of Elasticity | 195 | GPa |
| Density | 8.0 | g/cm³ |
| Melting Point | 1350 – 1390 | °C |
Dimensions
| Diameter (mm) | Tolerance (mm) | Length (mm) | Condition |
|---|---|---|---|
| 5 – 25 | ±0.10 | 1000 – 6000 | Cold Drawn / Bright |
| 26 – 50 | ±0.15 | 1000 – 6000 | Cold Finished / Polished |
| 51 – 100 | ±0.20 | 1000 – 6000 | Hot Rolled / Peeled |
| 101 – 200 | ±0.30 | 1000 – 6000 | Hot Rolled / Turned |
| 201 – 300 | ±0.50 | 1000 – 6000 | Forged / Rough Turned |
| 301 – 500 | ±0.75 | 1000 – 6000 | Forged / Annealed |
| Custom Sizes | As per requirement | Up to 7000 | Available on Request |
Equivalent Grades
| Standard | Grade | UNS | WERKSTOFF NR. | EN | JIS |
|---|---|---|---|---|---|
| ASTM / ASME | Alloy 904L | N08904 | 1.4539 | X1NiCrMoCu25-20-5 | SUS 890L |
| BS | 904S13 | – | 1.4539 | – | – |
| AFNOR | Z2NCDU25-20 | – | 1.4539 | – | – |
| GOST | 03Х22Н45М4БР | – | 1.4539 | – | – |
Weight Chart (Approx.)
| Diameter (mm) | Weight per Meter (kg) | Diameter (inch) | Weight per Meter (kg) |
|---|---|---|---|
| 6 | 0.22 | 1/4" | 0.25 |
| 10 | 0.62 | 3/8" | 0.56 |
| 12 | 0.89 | 1/2" | 0.89 |
| 16 | 1.58 | 5/8" | 1.39 |
| 20 | 2.47 | 3/4" | 2.01 |
| 25 | 3.85 | 1" | 3.55 |
| 30 | 5.55 | 1-1/4" | 4.98 |
| 40 | 9.86 | 1-1/2" | 7.13 |
| 50 | 15.40 | 2" | 12.70 |
| 60 | 22.19 | 2-1/2" | 18.00 |
| 80 | 39.46 | 3" | 28.60 |
| 100 | 61.60 | 4" | 50.30 |
| 120 | 88.80 | 5" | 78.60 |
| 150 | 138.60 | 6" | 113.00 |
The applications of our Alloy 904L round bars include oil & gas projects, chemical processing plants, desalination systems, shipbuilding, aerospace, automotive, and heavy engineering. With superior resistance to oxidation and stress corrosion cracking, our bars perform reliably in extreme environments. Whether it is for large-scale infrastructure projects in Mumbai or precision engineering in Germany and the USA, Shakti Forge India remains the first choice for industries that demand excellence.
As one of the most reliable Alloy 904L Round Bars Manufacturer, Stockist and Exporter, Shakti Forge India continues to expand its presence in domestic and international markets. Our focus on quality, timely delivery, and customer satisfaction makes us a preferred partner for leading industries across the globe. For bulk requirements or customized solutions, Shakti Forge India ensures the highest level of product integrity and service excellence.
Frequently Asked Questions (FAQs)
Q1: What is Alloy 904L Round Bar?
- Alloy 904L Round Bar is a high-alloy austenitic stainless steel bar that contains high amounts of nickel, chromium, molybdenum, and copper. It offers excellent corrosion resistance, particularly in strong reducing acids like sulphuric and phosphoric acid. Its low carbon content improves weldability and prevents intergranular corrosion.
Q2: What are the key properties of Alloy 904L Round Bars?
- The key properties of Alloy 904L Round Bars include high resistance to pitting, crevice corrosion, and stress-corrosion cracking. They also provide excellent strength, ductility, and formability. Their superior corrosion resistance in chloride and acid-rich environments makes them ideal for industrial applications.
Q3: Where are Alloy 904L Round Bars commonly used?
- Alloy 904L Round Bars are used in chemical processing, marine, and offshore industries. They are also widely used in heat exchangers, condensers, pharmaceutical equipment, and seawater cooling systems. Their strength and corrosion resistance make them suitable for use in acidic and saline environments.
Q4: What standards apply to Alloy 904L Round Bars?
- The common standards for Alloy 904L Round Bars include ASTM B649, ASME SB649, and EN 1.4539. The material designation is UNS N08904, and it is also equivalent to SUS 890L in the JIS standard. These standards ensure consistent quality, mechanical strength, and chemical properties.
Q5: What sizes and finishes are available for Alloy 904L Round Bars?
- Alloy 904L Round Bars are available in diameters ranging from 5 mm to 500 mm with various surface finishes. Common finishes include bright, black, polished, peeled, and ground. Custom cut lengths and machining options are also available as per project specifications.
Cities we have supplied our products to
Mumbai, Delhi, Bengaluru(Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Narmada, Ankleshwar, Navsari, Valsad, Rajpipla, Veraval,Kovvur, Andra Pradesh,Karwar, Karnataka,Kosamba, Gujarat, Vishakapatnam, Shahad, Pondicherry, Kakkinada, Pradesh, Nagda, Madhya Pradesh,Harihar, Karnataka, Tuticorin, Tamilnadu, Trivandrum, KeralaKurnool, Rourkela, Hindupur, Orissa, Renukoot, Uttar Morbi, Kerala ,Himachal, Dehradun, Visakhapatnam ,Jamnagar, Kozhikode, Ludhiana,Latur, Nanded, Vijaywada, Alwar, Bareilly, Bikaner, Andheri, Marol, Taloja, Turbhe, TTC (Thane-Belapur), Pimpri-Chinchwad, Chakan, Talegaon, Ranjangaon, Jejuri, Baramati, Satpur, Ambad, Sinnar, Igatpuri, Shendra, Waluj, Chikalthana, Paithan, Hingna, Butibori, Kalmeshwar, Umred, Shiroli, Kagal, Gokul Shirgaon, Akkalkot, Chincholi, Lote-Parshuram, Dombivli, Ambernath, Mahad, Roha, Palghar, Tarapur (Boisar)
Cities we have supplied our products to
South Korea, Africa, Sri Lanka, Syria, Taiwan, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen, France, Germany, Greece, Oman, Colombia, Portugal, Japan, Lithuania, Macau, Mongolia, Qatar, Ireland, Malaysia, Bangladesh, Russia, Iran, Jordan, Singapore, Bulgaria, Poland, Denmark, Nigeria, Gambia, Indonesia, Finland, Argentina, Chile, Spain, Peru, Kuwait, India, Saudi Arabia, Slovakia, Slovenia, Sweden, Switzerland, Bahrain, the Netherlands, United Kingdom, Mexico, Bulgaria, Spain, France, Germany, Colombia, Brazil, Saudi Arabia, Iraq, Iran, Sudan, Libya, Tanzania, Nigeria, New Zealand, Paris, Switzerland
Applications of Alloy 904L Round Bars
- Oil & Gas Industry – pipelines, offshore rigs, valves, and fittings
- Chemical Processing Plants – heat exchangers, reactors, and storage vessels
- Marine & Shipbuilding – propeller shafts, seawater systems, and pumps
- Aerospace – jet engines, turbine blades, and structural components
- Power Generation – nuclear plants, boilers, and steam generators
- Automotive – exhaust systems, sensors, and performance parts
- Pharmaceutical & Food Industry – equipment requiring hygiene and corrosion resistance
- Construction & Infrastructure – high-strength fasteners, joints, and supports