Alloy C4 Seamless Pipes
Alloy C4 seamless pipes are cylindrical hollow tubes made from a nickel-chromium-molybdenum alloy, designed to offer exceptional resistance to corrosion, especially in strong oxidizing and acidic environments. Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd., based in Chon Buri, is a trusted manufacturer and supplier of Alloy C4 seamless pipes built to stringent quality standards for demanding industries. Available in a wide range of sizes, wall thicknesses, and surface finishes, both standard and customized, our pipes deliver reliable performance under extreme conditions. Known for their thermal stability and excellent resistance to oxidizing chloride media, these pipes undergo hydrostatic, eddy current, PMI, and ultrasonic testing to ensure top-tier quality and durability.
About Alloy C4 Seamless Pipes
UNS N06455 Seamless Pipes (DIN 2.4610,) are high-performance piping solutions made from nickel, chromium and molybdenum, offering excellent resistance to corrosion and high-temperature environments. These pipes feature a seamless build, ensuring uniform wall thickness and high dimensional accuracy. These pipe meet international standards, including ASTM B622 and ASME SB622, ensuring quality and consistency across applications. Key physical properties of DIN 2.4610 pipes include a density of 8.89 g/cm³, a melting range of 1370°C to 1410°C and a coefficient of thermal expansion of 13.0 µm/m°C. These pipes are available in sizes ranging from 1/4 inch to 4 inches in outer diameter and various wall thicknesses, including SCH 5S, SCH 40S and SCH 80S. Surface finishes include mill finish, pickled, or bright annealed. Alloy C4 seamless pipes are manufactured for dimensional precision and metallurgical consistency in high-spec industrial systems.
Benefits of Using Alloy C4 Seamless Pipes
Stress Corrosion Cracking Resistance
The seamless alloy C-4 pipe offers exceptional resistance to stress corrosion cracking, ensuring long-term stability in high-stress environments.
Pitting and Crevice Corrosion Resistance
Alloy C-4 seamless pipes prevent pitting and crevice corrosion, even in highly corrosive environments, extending the life of the system.
Performance at Elevated Temperatures
These pipes maintain their structural integrity and performance even at elevated temperatures, making them ideal for high-temperature applications.
High Strength and Fabricability
Alloy alloy C4 seamless pipes combine high strength with excellent fabricability which makes them easy to weld, shape and install in various industrial systems.
Durability in Harsh Environments
This seamless pipe thrives in harsh environments, providing reliable performance in aggressive chemical and thermal conditions.
Versatility Under Extreme Pressure
Why Choose Thaida for Your Alloy C4 Seamless Pipes Needs?
Our alloy C4 seamless pipes are a reliable choice for critical industrial needs, offering unmatched technical precision and strict production control. We ensure 100% fulfillment of commitments, with consistent inventory and flexible options, including customization for custom sizes. Our packaging is specially designed for international shipments and we can accommodate specific documentation and delivery requirements for global projects.
Competitive Pricing
Global Exports Expertise
Large Inventory & Fast Delivery
Custom Sizes & Special Orders
Industry Certifications & Compliance
Premium Materials & Strict Quality Control
After-Sales Support & Service
In-House Testing & Full Traceability
ASTM B622 Alloy C4 Seamless Pipes Specification
| Specifications | ASTM B622 / ASME SB622 |
|---|---|
| Size Range | 15"NB – 150"NB |
| Outer Diameter | 1.250″ – 6.000″ (30-150Mm) |
| Wall Range | 0.095″ – 1.000″ (.2.5-25Mm) |
| Schedule | SCH5, SCH10, SCH40, STD, SCH80, SCH160 |
| Finish | AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| Form | Round, Square, Rectangular, Straight Etc. |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded. |
| Marking | Marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
Alloy C4 Seamless Pipes Chemical Composition
The Alloy C4 Seamless Piping chemical composition table highlights essential elements such as chromium, nickel, carbon, and manganese levels.
| C | Si | Mn | P | S | Cr | Mo | Ni | Ti | Cu | Co | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.015 | ≤0.08 | ≤1.00 | ≤0.025 | ≤0.015 | 14.00–18.00 | 14.00–17.00 | Bal | ≤0.70 | ≤0.50 | ≤2.00 | ≤3.00 |
ASTM B622 Alloy C4 Seamless Pipes Mechanical Properties
This table lists the mechanical properties of alloy C4 seamless pipes, including tensile strength, yield strength and elongation.
| GRADE | DENSITY | MELTING POINT | TENSILE STRENGTH RM N/MM2 | YIELD STRENGTH RP0.2N/MM2 | ELONGATION A5 % |
|---|---|---|---|---|---|
| C4 | 8.64 g/cm3 | 1350-1400 °C | 783 | 365 | 55 |
Alloy C4 Seamless Pipes Manufacturing Process
There are 5 steps involved in the Alloy C4 Seamless Piping manufacturing process, which are given below.
1. Raw Material Selection
High-quality alloy billets and strips are carefully selected for superior strength and corrosion resistance.
2. Pipes Formation
The selected raw material is formed into pipes using seamless extrusion methods, depending on the application.
3. Heat Treatment
Pipes undergo required controlled heat treatment to enhance mechanical properties and relieve internal stresses.
4. Cold Working & Finishing
After heat treatment, pipes are cold-worked for better surface finish, dimensional accuracy and improved strength.
5. Quality Control and Testing
Every pipe is thoroughly inspected and tested to ensure it meets international quality standards for performance and reliability.
Applications of Alloy C4 Seamless Pipes
Alloy C4 seamless pipes find their most extensive use in the chemical processing industry, where they are essential for conveying aggressive and corrosive media. These pipes are installed in critical components such as heat exchangers, reaction vessels, and acid pipelines that handle hydrochloric acid, chlorine gas, and other harsh chemicals.
Chemical and Petrochemical Industry
Oil and Gas Industry
Pharmaceutical & Biotechnology
Power Generation & Heat Exchange
Marine & Shipbuilding
Automotive & Transportation
Water Treatment & Plumbing
Construction & Infrastructure
Aerospace & Defense
FAQ's
Are Alloy C4 Seamless Pipes suitable for high-temperature applications?
Are Alloy C4 Seamless Pipes suitable for high-temperature applications?
Yes, Alloy C4 Seamless Pipes are highly suitable for high-temperature applications. This nickel-chromium-molybdenum alloy resists the formation of detrimental grain boundary precipitates. This stability allows the pipes to maintain their corrosion resistance and mechanical strength after being exposed to high-heat welding or service.
What material is Alloy C4?
What material is Alloy C4?
Alloy C4 is a nickel-chromium-molybdenum alloy primarily designed for exceptional corrosion resistance in many harsh chemical process environments. It contains a low carbon content. This precise composition provides excellent thermal stability at elevated temperatures, which is critical for demanding service.
How do Alloy C4 Seamless Pipes perform at high temperatures?
How do Alloy C4 Seamless Pipes perform at high temperatures?
Our seamless pipes offer excellent thermal stability and high-temperature strength. Unlike some other alloys, Alloy C4 resists the formation of harmful phases that can reduce ductility and corrosion resistance after prolonged heat exposure. This makes it highly reliable for prolonged use in processes requiring both heat and chemical resistance.
What is the difference between Alloy C4 and C22?
What is the difference between Alloy C4 and C22?
The main difference between our Alloy C4 and C22 is the molybdenum and tungsten content. C22 contains more molybdenum and a small amount of tungsten. This gives C22 a slightly broader range of corrosion resistance in oxidizing and reducing environments. C4 excels in resistance to high-temperature sensitization.
Alloy C4 Seamless Pipes compatible with standard pipe fittings?
Alloy C4 Seamless Pipes compatible with standard pipe fittings?
Yes, Alloy C4 Seamless Pipes are compatible with standard pipe fittings made from the same or similar high-nickel alloys. Fittings like flanges, elbows, and reducers are manufactured to the same dimensional standards (e.g., ASME B16.9 or B16.5). This ensures a perfect fit for a sealed, reliable piping system assembly.
What makes Alloy C4 Seamless Pipes different from other nickel alloys?
What makes Alloy C4 Seamless Pipes different from other nickel alloys?
Alloy C4 Seamless Pipes are distinguished by their exceptional resistance to a wide variety of chemical corrodents and their high thermal stability. While many nickel alloys offer good resistance, C4’s composition is specifically balanced to prevent intergranular corrosion caused by heat exposure during welding or service.
What are the grades of Alloy C4?
What are the grades of Alloy C4?
Alloy C4 is a specific grade itself, designated as UNS N06455. It does not have further sub-grades. However, it belongs to the larger family of C-type Alloy alloys, which includes C-276, C-22, and C-2000. These related grades offer different balances of corrosion resistance for various industrial applications