What are the differences between carbon steel seamless pipe and Inconel 600 seamless pipe?
What are the differences between carbon steel seamless pipe and Inconel 600 seamless pipe?
The main difference between carbon steel seamless tubes and Inconel 600 seamless tubes lies in their chemical composition, which leads to significant differences in corrosion resistance, temperature performance, and cost. Inconel 600 is a high-performance high-temperature alloy often used in extreme environments, while carbon steel is an economical choice for general-purpose applications.
What are the standard pipe materials for Inconel 600?
These pipe materials conform to ASTM B167, B829, and B517 standards. Sizes vary depending on the ASTM, ASME, and API standards. Seamless Inconel 600 pipes range in diameter from 4mm to 219mm, while welded and arc-welded pipes range in diameter from 5mm to 1219.2mm, with wall thicknesses ranging from 0.5mm to 20mm.
What is Carbon Steel Seamless Pipe?
Carbon steel seamless pipe is an industrial pipe made of low-carbon steel. Its high strength and excellent corrosion resistance make it ideal for a variety of applications, including manufacturing, power plants, shipbuilding, and marine engineering. Its unique composition allows carbon steel seamless pipe to withstand extreme temperatures, pressures, and highly corrosive substances. Furthermore, its smooth inner surface provides excellent flow and unobstructed flow, eliminating the risk of blockages or turbulence that can occur with other types of pipes.
What is Inconel 600 Seamless Pipe?
Inconel 600 seamless pipe is a nickel-chromium alloy designed for high-temperature applications. Its composition includes approximately 72% nickel, 14-17% chromium, 6-10% iron, and small amounts of titanium, aluminum, and manganese. This gives it strong oxidation and corrosion resistance, enabling it to withstand the erosion of various acids, such as hydrochloric acid and sulfuric acid. It also possesses excellent high-temperature strength, making it an ideal material for various industries, including petrochemical production and aerospace engineering.
Chemical Composition Comparison: Carbon Steel Seamless Tube vs Inconel 600 Seamless Tube
| Element | Carbon Steel Seamless Tube | Inconel 600 Seamless Tube (UNS N06600) |
|---|---|---|
| Iron (Fe) | ≥ 98.0 % (Balance) | 6.00 – 10.00 % |
| Carbon (C) | 0.30 % max | ≤ 0.15 % |
| Manganese (Mn) | 0.29 – 1.06 % | ≤ 1.00 % |
| Phosphorus (P) | ≤ 0.035 % | – |
| Sulfur (S) | ≤ 0.035 % | ≤ 0.015 % |
| Silicon (Si) | 0.10 % min | ≤ 0.50 % |
| Nickel (Ni) | – | ≥ 72.0 % |
| Chromium (Cr) | – | 14.00 – 17.00 % |
| Copper (Cu) | ≤ 0.40 % (residual) | ≤ 0.50 % |
| Molybdenum (Mo) | ≤ 0.15 % (residual) | – |
| Vanadium (V) | ≤ 0.08 % | – |
| Aluminum (Al) | – | ≤ 0.30 % (typical) |
| Titanium (Ti) | – | ≤ 0.30 % (typical) |
| Cobalt (Co) | – | – |
| Nitrogen (N) | – | – |
| Other Elements | – | ≤ 0.30 % |
Strength Comparison: Carbon Steel Seamless Tube vs Inconel 600 Seamless Tube
| Property | Carbon Steel Seamless Tube | Inconel 600 Seamless Tube (UNS N06600) |
|---|---|---|
| Tensile Strength (Room Temp) | 415 – 585 MPa | 550 – 690 MPa |
| Yield Strength (0.2% Offset, Room Temp) | 240 – 415 MPa | 240 – 350 MPa |
| Elongation | ≥ 25 % | ≥ 30 % |
| Hardness (Annealed) | ≤ 197 HB | 65 – 90 HRB |
| Modulus of Elasticity | 200 – 210 GPa | 207 GPa |
| Fatigue Strength (Rotating Beam) | 200 – 250 MPa | 270 – 310 MPa |
| Shear Strength | 250 – 350 MPa | ≈ 520 MPa |
| Impact Toughness (Charpy V-Notch) | 20 – 40 J (at 20°C) | > 100 J (at 20°C) |
| High-Temperature Tensile Strength (at 600°C) | ≈ 150 MPa | ≈ 350 MPa |
| High-Temperature Yield Strength (at 600°C) | ≈ 100 MPa | ≈ 180 MPa |
| Creep Rupture Strength (700°C, 1000h) | Not applicable (rapid oxidation) | ≈ 60 MPa |
| Maximum Service Temperature (Continuous) | ≈ 425 °C | ≈ 1095 °C |
| Minimum Service Temperature | ≈ -30 °C | ≈ -250 °C |
| Thermal Expansion Coefficient (20–100°C) | 11.7 μm/m·°C | 13.3 μm/m·°C |
| Thermal Conductivity (100°C) | 50 – 60 W/m·K | 14.8 W/m·K |
| Specific Heat Capacity (20°C) | 470 J/kg·K | 460 J/kg·K |
| Density | 7.85 g/cm³ | 8.47 g/cm³ |
Comparison of applications of carbon steel seamless tubes and Inconel 600 seamless tubes
Carbon steel is widely used in general construction, oil and gas transportation, and other applications where heat resistance and corrosion resistance are not critical. Inconel 600 alloy, due to its excellent performance in harsh environments, is widely used in aerospace, chemical, nuclear reactor, and heat treatment equipment industries.
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅ Over 18 years of export experience, products sold to more than 80 countries
✅ Certified by ISO, SGS, and BV
✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars
✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging
✅ Fast delivery within 7-15 days, supported by global logistics partners
📦 Packaging and Shipping
All stainless steel products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
Gnee Steel also supplies custom Inconel 600 products in various sizes and specifications. Please send us your drawings for a quote!
Gnee Steel is a supplier of Inconel 600 alloy, offering a wide range of products including: seamless pipe (sizes: 4-219 mm; thickness: 0.5-20 mm); welded pipe (sizes: 5.0-1219.2 mm; thickness: 0.5-20 mm); plates (thickness: 0.1 to 100 mm; width: 10-2500 mm); strips; alloy round bars (diameter: 3-800 mm); flat bars (thickness: 2-100 mm; width: 10-500 mm); hexagonal bars (size: 2-100 mm); wire rods; and extruded profiles. We collaborate with steel mills to provide our customers with Inconel 600 alloy products that meet or exceed numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS standards.
Gnee Steel stocks and sells Inconel 600, pipes, plates, strips, round bars, flat bars, forged billets, hexagonal steel, wire rods, and extruded profiles. Please feel free to contact us at ss@gneesteel.com for a quote.
