Alloy 188 Round Bars Manufacturer, Stockist and Exporter
Alloy 188 Round Bars are a high-performance cobalt-nickel-chromium-tungsten superalloy known for exceptional strength and oxidation resistance at elevated temperatures. These bars are designed to perform reliably under severe mechanical and thermal stress, making them ideal for aerospace and gas turbine components. Alloy 188 maintains its structural integrity even at temperatures exceeding 1000°C. The alloy also provides excellent resistance to hot corrosion and oxidation in various atmospheric conditions. With superior metallurgical stability, it ensures consistent performance across long operational cycles. This makes Alloy 188 a preferred choice in applications demanding durability and thermal stability.
The composition of Alloy 188 includes cobalt as the primary element, combined with nickel, chromium, and tungsten, which contribute to its remarkable mechanical and thermal properties. The presence of chromium enhances oxidation resistance, while tungsten improves high-temperature strength. Nickel provides ductility and corrosion resistance, ensuring the alloy remains stable under cyclic heating conditions. Its unique chemical balance makes it highly resistant to carburization and sulfidation, even in hostile environments. Alloy 188 bars are heat-treatable and can be easily fabricated using conventional methods. Their superior metallurgical characteristics make them suitable for complex, high-performance engineering applications.
Alloy 188 Round Bars are commonly used in gas turbine engines, afterburner liners, flame holders, and transition ducts. These components require materials that can withstand both high heat and corrosive atmospheres. The alloy’s excellent oxidation resistance up to 1090°C ensures long service life even under prolonged high-temperature exposure. In addition to aerospace, it finds applications in industrial furnaces, power generation systems, and petrochemical processing. Its thermal fatigue resistance enables stable operation in conditions involving frequent temperature fluctuations. The alloy’s superior mechanical strength makes it a reliable material for high-stress mechanical components.
Worldwide Alloy 188 Round Bars Manufacturer, Stockist and Exporter
Manufacturers prefer Alloy 188 Round Bars for their combination of workability and high performance. The bars can be hot or cold worked and are easily machinable using carbide tools. The alloy’s ductility allows for efficient forming and welding without compromising its mechanical integrity. It is compatible with most conventional joining processes like TIG and MIG welding. Post-weld heat treatment can further enhance its structural stability and grain uniformity. This workability, combined with its high-temperature resilience, makes Alloy 188 an engineer’s choice for advanced fabrication requirements. Its metallurgical behavior ensures predictable and repeatable results in production.
In terms of physical properties, Alloy 188 offers high tensile and creep strength even after long-term exposure to elevated temperatures. Its density is approximately 9.14 g/cm³, and it exhibits excellent thermal stability. The alloy’s high melting range provides confidence in demanding service conditions. It also has a low rate of oxidation scaling, allowing components to maintain dimensional accuracy over extended service periods. The alloy demonstrates high resistance to oxidation in static and dynamic environments. Additionally, its mechanical strength remains stable under both tensile and compressive stress, ensuring consistent reliability during use.
Alloy 188 Round Bars are available in various sizes and diameters to meet industry-specific requirements. They are manufactured in compliance with international standards such as ASTM B435 and AMS 5772. The dimensional tolerances are carefully maintained to ensure precise fitment in assemblies. These round bars are supplied in multiple finishes including bright, black, and polished surface conditions. Standard sizes range from small-diameter rods to large forged bars suitable for heavy-duty applications. Customized lengths and tolerances can also be provided based on project specifications. Quality control and testing are integral to ensuring flawless performance and material consistency.
Overall, Alloy 188 Round Bars provide an optimal balance of strength, stability, and corrosion resistance for critical engineering applications. Their proven performance in high-temperature, corrosive, and oxidizing environments makes them indispensable in aerospace and power industries. The alloy’s adaptability for machining, forming, and welding further enhances its utility in manufacturing. Continuous innovations in alloy processing have made Alloy 188 even more reliable and efficient for next-generation technology. Whether used in turbines, reactors, or industrial heat systems, these bars deliver consistent and dependable performance. Alloy 188 remains a trusted material for extreme operating conditions worldwide.
Alloy 188 Round Bars Specifications
| Specification | Details |
|---|---|
| Product Name | Alloy 188 Round Bars |
| Material Grade | Alloy 188 / UNS R30188 |
| Standard | ASTM B435 / AMS 5772 |
| Equivalent Trade Names | Haynes® 188, Udimet® 188 |
| Type | Cobalt-Nickel-Chromium-Tungsten Superalloy |
| Size Range | Diameter: 3 mm to 350 mm | Length: up to 6000 mm (custom sizes available) |
| Condition | Hot Rolled, Cold Drawn, Annealed, Pickled, or Bright Finished |
| Density | 9.14 g/cm³ |
| Melting Range | Approx. 1260°C – 1355°C |
| Mechanical Strength | Tensile Strength: 880 MPa (min) | Yield Strength: 400 MPa (min) | Elongation: 40% (min) |
| Hardness | 200 HB (typical) |
| Surface Finish | Bright, Black, Polished, Turned, or Ground Finish |
| Manufacturing Process | Forged / Rolled / Heat Treated / Annealed |
| Applications | Gas Turbine Engines, Combustion Liners, Afterburner Components, Industrial Furnaces, Aerospace Hardware |
| Testing | Ultrasonic Test, Radiography, Tensile Test, PMI Test, Hardness Test |
| Certification | EN 10204 3.1 / 3.2 Certification Available |
| Corrosion Resistance | Excellent resistance to oxidation and hot corrosion up to 1100°C |
| Form | Round Bars, Rods, Billets, Custom Machined Components |
| Country of Origin | Made in India / Imported (depending on supplier) |
Chemical Composition
| Element | Content (%) | Function / Remarks |
|---|---|---|
| Cobalt (Co) | Balance (Base) | Provides strength and stability at elevated temperatures |
| Nickel (Ni) | 22.0 – 24.0 | Improves toughness and corrosion resistance |
| Chromium (Cr) | 21.0 – 23.0 | Enhances oxidation and scaling resistance |
| Tungsten (W) | 13.0 – 15.0 | Increases creep and high-temperature strength |
| Iron (Fe) | 3.0 max | Minor impurity element |
| Manganese (Mn) | 1.25 max | Improves hot working characteristics |
| Silicon (Si) | 0.50 – 1.00 | Acts as a deoxidizer and strengthens the alloy |
| Carbon (C) | 0.08 – 0.15 | Improves hardness and wear resistance |
| Boron (B) | 0.015 max | Enhances grain boundary strength |
Mechanical Properties
| Property | Value | Condition |
|---|---|---|
| Tensile Strength | 880 MPa (min) | Room Temperature, Annealed |
| Yield Strength (0.2% Offset) | 400 MPa (min) | Room Temperature, Annealed |
| Elongation | 40% (min) | In 50 mm |
| Hardness | 200 HB (typical) | Annealed Condition |
| Density | 9.14 g/cm³ | At Room Temperature |
| Melting Point | 1260°C – 1355°C | Solidus–Liquidus Range |
| Modulus of Elasticity | ~ 213 GPa | At Room Temperature |
| Thermal Expansion Coefficient | 13.3 µm/m°C (20–1000°C) | Typical |
Dimensions
| Diameter (mm) | Diameter (inch) | Length (mm) | Tolerance (mm) | Available Form |
|---|---|---|---|---|
| 3 – 10 | 0.118 – 0.394 | 2000 – 6000 | ±0.10 | Cold Drawn / Bright Finish |
| 10 – 30 | 0.394 – 1.181 | 2000 – 6000 | ±0.15 | Cold Drawn / Polished |
| 30 – 60 | 1.181 – 2.362 | 3000 – 6000 | ±0.25 | Hot Rolled / Machined |
| 60 – 120 | 2.362 – 4.724 | 3000 – 6000 | ±0.50 | Hot Rolled / Forged |
| 120 – 200 | 4.724 – 7.874 | 3000 – 6000 | ±1.00 | Forged / Peeled / Ground |
| 200 – 350 | 7.874 – 13.780 | 3000 – 6000 | ±1.50 | Forged / Turned Finish |
Equivalent Grades
| Standard | Equivalent Grade / Designation | Description |
|---|---|---|
| UNS | R30188 | Unified Numbering System designation for Alloy 188 |
| ASTM | B435 / B815 | Standard specifications covering cobalt-nickel-chromium-tungsten alloys |
| AMS | 5772 / 5773 | Aerospace Material Specification for Alloy 188 bars and forgings |
| ISO | Alloy 188 (Comparable) | International standard equivalent used for high-temperature service alloys |
| Trade Name | Haynes® 188 / Udimet® 188 | Common commercial names for Alloy 188 superalloy |
| EN / DIN | 2.4683 | European designation for cobalt-based high-temperature alloy |
Weight Chart (Approx.)
| Diameter (mm) | Length (mm) | Weight per Meter (kg/m) | Approx. Weight (kg) |
|---|---|---|---|
| 6 | 1000 | 0.26 | 0.26 |
| 10 | 1000 | 0.71 | 0.71 |
| 20 | 1000 | 2.85 | 2.85 |
| 30 | 1000 | 6.41 | 6.41 |
| 40 | 1000 | 11.40 | 11.40 |
| 50 | 1000 | 17.80 | 17.80 |
| 60 | 1000 | 25.65 | 25.65 |
| 80 | 1000 | 45.50 | 45.50 |
| 100 | 1000 | 71.10 | 71.10 |
The applications of our Alloy 188 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 188 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 188 Round Bar?
- Alloy 188 Round Bar is a cobalt-nickel-chromium-tungsten alloy designed for excellent high-temperature strength and oxidation resistance. It performs exceptionally well under extreme thermal and mechanical stress, making it suitable for aerospace gas turbines, combustion chambers, and afterburner components. The alloy maintains its integrity even in oxidizing and carburizing environments, ensuring long service life and dimensional stability.
Q2: What are the key features of Alloy 188 Round Bars?
- Alloy 188 Round Bars exhibit outstanding oxidation resistance up to 1095°C and excellent ductility even after prolonged exposure to elevated temperatures. The alloy offers superior creep and stress rupture strength, combined with good formability and weldability. Its balance of mechanical properties and thermal stability makes it ideal for demanding engineering applications requiring both strength and corrosion resistance.
Q3: What industries commonly use Alloy 188 Round Bars?
- These round bars are primarily used in aerospace, defense, chemical processing, and gas turbine manufacturing industries. They are also utilized in heat exchangers, combustion liners, and high-temperature structural components. The alloy’s ability to resist oxidation, sulfidation, and carburization makes it a preferred choice for harsh operational environments where long-term stability is crucial.
Q4: What standards and specifications apply to Alloy 188 Round Bars?
- Alloy 188 conforms to international standards such as ASTM B435, ASTM B815, and AMS 5772 / 5773. These specifications govern the material’s chemical composition, mechanical properties, and manufacturing tolerances. Compliance with these standards ensures that the bars deliver reliable performance and meet aerospace-grade quality requirements for structural and high-temperature use.
Q5: Can Alloy 188 Round Bars be machined and welded easily?
- Yes, Alloy 188 can be machined using standard cobalt or carbide-tipped tools with moderate cutting speeds. It can also be welded using TIG, MIG, or resistance welding techniques with proper joint preparation. Post-weld heat treatment is generally not required, though it can be used to relieve residual stresses and enhance dimensional accuracy for precision applications.
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 188 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