What is Inconel 625 material ?
Inconel 625 is a high-performance nickel-chromium-molybdenum alloy known for its exceptional strength, high-temperature resistance (up to ~1800°F/980°C), and outstanding resistance to corrosion, pitting, crevice corrosion, and chloride stress cracking, making it ideal for harsh environments like aerospace, marine, and chemical processing, used in jet engine parts, offshore equipment, and heat exchangers.
What is the equivalent of Inconel 625 material?
Equivalent materials to Inconel 625 include various material grades (e.g., UNS N06625, EN NiCr22Mo9Nb, W. Nr 2.4856) and similar nickel-based high-performance alloys (e.g., Haynes 625, Nicrofer 6020), which can be processed into a variety of practical product forms, including plates, coils, tubes, bars, and wires. Specifications may vary slightly depending on the product form (e.g., ASTM B443 for plates, B444 for pipes).
What is the composition of 625?
Alloy 625 (Inconel 625) is a nickel-based superalloy defined by its primary elements: Nickel (min 58%), Chromium (20-23%), Molybdenum (8-10%), and Niobium (3.15-4.15%).
| Element | Content Range | Element | Content Range |
|---|---|---|---|
| Nickel | 58.0 min. | Silicon | 0.50 |
| Chromium | 20.0 min. – 22.0 max. | Phosphorus | 0.015 |
| Molybdenum | 8.0 min. – 10.0 max. | Sulfur | 0.015 |
| Iron | 5.0 max. | Aluminum | 0.40 |
| Niobium (plus Tantalum) | 3.15 min. – 4.15 max. | Titanium | 0.40 |
| Carbon | 0.010 | Cobalt (if determined) | 1.0 |
| Manganese | 0.50 | - | - |
Inconel 625 mechanical properties
| Temperature | 0.2% Yield Strength | Ultimate Tensile Strength | Elongation Percent | |||
|---|---|---|---|---|---|---|
| °F | °C | psi | MPa | psi | MPa | |
| 1920 | 1065 | 63,000 | 430 | 136,000 | 940 | 51.5 |
Inconel 625 Physical Properties
Density: 0.303 lb/in3(8.44 g/cm3
Specific Gravity: 8.44
Melting Range: 2350 - 2460°F (1280 - 1350°C)
Specific Heat: 0.098 Btu/lb x °F (410 Joules/kg x °K)
Magnetic Permeability (75°F, 200 oersted): 1.0006
What is the hardness of Inconel 625?
Inconel 625 hardness (HRC) varies significantly with condition, typically around 22-29 HRC in the annealed state, but increasing to 35-42 HRC or even higher with cold working or aging, providing good strength and ductility, though it work-hardens rapidly, requiring care during forming.
Inconel 625 Price per kg
The price per kilogram of Inconel 625 varies significantly depending on the form (rods, tubes, plates, powder) and quantity, with prices typically ranging from $20 to over $100 per kilogram by the end of 2025. Specifically, rod prices are usually around $35-50/kg, plate prices around $35-47/kg, and powder prices exceed $110/kg.
What is the difference between Inconel 625 and hastelloy c276?
Inconel 625 and Hastelloy C-276 are both high-performance nickel-based alloys. The main difference lies in their composition: Inconel 625 has a higher chromium content, making it more suitable for oxidizing environments (such as concentrated sulfuric acid and nitric acid), while Hastelloy C-276 has a higher molybdenum content, providing superior resistance to reducing environments (such as hydrochloric acid and hydrogen sulfide).
The choice of material depends on the specific operating conditions. For example, in oil and gas well environments, Inconel 625 is used for highly oxidizing conditions, while Hastelloy C-276 is used for highly reducing conditions.
If you have project requirements for Inconel 625 alloy, we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition and free samples, please contact our factory immediately. We offer competitive prices and excellent service.ss@gneesteel.com
