This document introduces the differences between Inconel 600 and Incoloy 825 alloy coils
This document introduces the differences between Inconel 600 and Incoloy 825 alloy coils
Both Inconel 600 coils and Incoloy 825 coils are high-performance nickel-based superalloys, but their main differences lie in their chemical composition, intended applications, and cost. Inconel 600 alloy coils have a higher nickel content and are optimized for high-temperature strength, while Incoloy 825 coils are a nickel-iron-chromium alloy that performs exceptionally well in certain highly corrosive, acidic environments.
What is the maximum operating temperature of Incoloy 825?
Operating Temperature
The operating temperature range for Alloy 825 is from cryogenic temperatures up to 1000°F (540°C). Use of Alloy 825 at temperatures above 1000°F (538°C) is not recommended, as harmful phases may form at these temperatures, negatively impacting impact toughness and ductility.
Inconel 600 coil is a continuous rolled material (typically thin sheet or strip) made from a high-performance nickel-chromium-iron alloy. It possesses excellent high-temperature oxidation resistance (up to approximately 1150°C), superior resistance to chloride stress corrosion cracking, and good formability. Supplied in an efficient, continuous form, it is specifically designed for the mass production of high-temperature and corrosion-resistant gaskets, seals, bellows, heating element sheaths, and equipment linings through automated stamping, bending, welding, and other processes. It is a key foundational material for the large-scale production of complex corrosion-resistant components in the chemical, heat treatment, nuclear power, and electronics industries.
Incoloy 825 coil is a continuous rolled material made from a nickel-iron-chromium alloy (Incoloy 825). Through the addition of elements such as molybdenum, copper, and titanium, it is specifically optimized to resist mixed corrosive environments of strong reducing acids (such as sulfuric acid) and oxidizing acids (such as nitric acid). It exhibits excellent resistance to stress corrosion cracking, pitting corrosion, and crevice corrosion, making it suitable for the mass production of components for acidic oil and gas field equipment, chemical container linings, seawater heat exchanger units, and flue gas desulfurization system components. It is a key engineering material form that combines efficient processing with effective protection against complex industrial corrosion.
Inconel 600 and Incoloy 825 alloy Coils Specifications :
| Dimensions : ASTM, ASME and API |
| Specifications : ASTM / ASME SB 168, ASTM / ASME SB 424 , ASTM / ASME SB 443 |
| Length : Single Random, Double Random & Cut Length |
| Range : 0.5 MM TO 200 MM THICK IN 1000 MM TO 2500 MM WIDTH & 2500 MM TO 12500 MM LENGTH |
| Finish : Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form : Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) |
Comparison of chemical composition between Inconel 600 and Incoloy 825 coils
| Element | Inconel 600 Coil | Incoloy 825 Coil |
|---|---|---|
| Nickel (Ni) | ≥ 72.0 % | 38.0 – 46.0 % |
| Chromium (Cr) | 14.0 – 17.0 % | 19.5 – 23.5 % |
| Iron (Fe) | 6.0 – 10.0 % | ≥ 22.0 % |
| Molybdenum (Mo) | – | 2.5 – 3.5 % |
| Copper (Cu) | ≤ 0.5 % | 1.5 – 3.0 % |
| Titanium (Ti) | – | 0.6 – 1.2 % |
| Aluminum (Al) | – | ≤ 0.2 % |
| Manganese (Mn) | ≤ 1.0 % | ≤ 1.0 % |
| Carbon (C) | ≤ 0.15 % | ≤ 0.05 % |
| Silicon (Si) | ≤ 0.5 % | ≤ 0.5 % |
| Sulfur (S) | ≤ 0.015 % | ≤ 0.03 % |
| Phosphorus (P) | – | ≤ 0.03 % |
Comparison of the mechanical properties of Inconel 600 Alloy Coil and Inconel 825 Coil
| Property | Inconel 600 Coil (Annealed) | Incoloy 825 Coil (Annealed) |
|---|---|---|
| Tensile Strength (MPa, min) | 550 – 690 | 586 – 724 |
| Yield Strength (0.2% Offset, MPa, min) | 240 | 241 – 345 |
| Elongation (% in 50 mm, min) | 30 | 30 |
| Hardness (Rockwell B, max) | 90 HRB | 88 HRB |
| Density (g/cm³) | 8.47 | 8.14 |
| Melting Range (°C) | 1370 – 1425 | 1370 – 1400 |
| Primary Corrosion Resistance | Oxidation, chlorides, alkalis | Acids, chlorides, seawater |
| Typical Service Temperature (max) | ~700°C (continuous) | ~540°C (continuous) |
Inconel 600 Coils vs. Inconel 825 Alloy Coils – Corrosion Resistance Comparison
Both of these alloys are known for their excellent corrosion resistance, but they excel in different environments. Inconel 600 coils are particularly resistant to oxidation and corrosion in high-temperature oxidizing atmospheres, such as those encountered in furnace components and heat treatment equipment. In contrast, Inconel 825 exhibits superior corrosion resistance in reducing environments and acidic media, making it the preferred material for chemical processing equipment and seawater applications.
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 Nickel 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 Nickel 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 Nickel 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.
