INCONEL 625
Inconel 625
Inconel 625 is a nickel-based superalloy with unmatched strength, extreme corrosion resistance, and high-temperature performance for the toughest challenges.
Table of Contents
Our Stock
Popular Products
Material Specification
| Specification | Equivalent |
|---|---|
| UNS | N06625 |
| AMS | 5599, 5848 |
| ASTM | B444, B829, B705, B775, B704, B751, B446, B443 |
| DIN | W.Nr. 2.4856 |
| EN | 2.4856 |
Possible Alternative Grades
| Alternative Grade | Why Choose This Over Inconel 625 / Alloy 625 |
|---|---|
| Inconel 718 | Higher strength and fatigue resistance at high temperatures, ideal for aerospace. |
| Incoloy 800 | More cost-effective with better oxidation resistance at high temperatures. |
| Hastelloy C-276 | Better resistance to pitting and stress corrosion in aggressive environments. |
| Monel 400 | Lower cost and great resistance to seawater, ideal for marine use. |
| Incoloy 825 | Best for handling acidic environments, especially sulfuric and phosphoric acids. |
| Hastelloy B-3 | Excellent resistance to hydrochloric acid at high temperatures. |
| Alloy 20 | Great for sulfuric acid resistance in chemical and pharmaceutical industries. |
| Inconel 600 | Cheaper, with good resistance but not as strong at high temperatures as Inconel 625. |
| Hastelloy C-22 | Superior resistance to a wide range of acids and alkalis. |
| Titanium Grade 2 | Lighter and corrosion-resistant, but not as heat-resistant as Inconel 625. |
Inventory
| Alloy 625 Sheets | Thickness: 1-6mm Width: 400-1260mm Length: 3050mm | |
| Alloy 625 Plates | Thickness: 6-16mm Width: 400-1260mm Length: 3050mm | |
| Alloy 625 Bars | Diameter: 6-130mm Length: <6000mm | |
| Alloy 625 Pipes | Diameter: 3-89mm Length: <6000mm | |
| Custom (Forging) | Round Bar: Diameter: >60 mm Length: <12000 mm | Square Bar: Diameter: >45 mm Length: <9000 mm |
Technical Data Sheet
Chemical Composition
Mechanical Properties
Physical Properties
Chemical Composition
| Element | Weight % | Range |
|---|---|---|
| Chromium (Cr) | 20.00% | 20.00 – 23.00 |
| Nickel (Ni) | 58.00% | 58.00 – 63.00 |
| Molybdenum (Mo) | 8.00% | 5.80 – 6.80 |
| Niobium (Nb) + Tantalum (Ta) | 3.15% | 2.80 – 3.60 |
| Iron (Fe) | 5.00% | 3.00 – 5.00 |
| Manganese (Mn) | 0.50% | 0.30 – 0.80 |
| Silicon (Si) | 0.50% | 0.20 – 0.60 |
| Carbon (C) | 0.10% | ≤0.10 |
| Sulfur (S) | 0.015% | ≤0.015 |
| Phosphorus (P) | 0.015% | ≤0.015 |
| Copper (Cu) | 0.40% | ≤0.40 |
| Titanium (Ti) | 0.10% | ≤0.10 |
| Aluminum (Al) | 0.05% | ≤0.05 |
Mechanical Properties
| Property | Value | Condition |
|---|---|---|
Tensile Strength | 690 MPa (100 ksi) | @ Room Temperature |
Yield Strength | 483 MPa (70 ksi) | @ Room Temperature |
Elongation | 40% | @ Room Temperature |
Reduction of Area | 50% | @ Room Temperature |
Hardness (Brinell) | ≤ 217 | @ Room Temperature |
Modulus of Elasticity | 207 GPa (30,000 ksi) | @ Room Temperature |
Poisson’s Ratio | 0.29 | @ Room Temperature |
Thermal Conductivity | 9.6 W/m·K | @ 25°C |
Physical Properties
| Property | Value |
|---|---|
| Density | 8.44 g/cm³ |
| Melting Point | 1290°C – 1350°C (2350°F – 2460°F) |
| Specific Heat | 0.46 J/g·K |
| Thermal Expansion (α) | 13.0 µm/m·K @ 20°C – 100°C |
| Electrical Resistivity | 1.45 µΩ·m |
Corrosion Resistance
- Excellent resistance to a wide range of corrosive environments, including:
- Aqueous Solutions: Sulfuric acid, hydrochloric acid, and chlorides.
- Oxidizing Environments: High-temperature oxidation and carburization.
- Reducing Environments: Strong reducing agents and high-temperature applications.
- High resistance to pitting, crevice corrosion, and stress corrosion cracking.
- Suitable for: Chemical processing, marine environments, aerospace applications, and oil & gas industries.
Thermal Properties
- High-temperature strength: Maintains mechanical properties at elevated temperatures up to 980°C (1800°F).
- Creep Resistance: Excellent creep strength for prolonged exposure to high temperatures.
- Thermal Stability: Stable microstructure over a wide temperature range, minimizing phase transformations.
Fabrication and Welding Information
- Fabrication: Easily fabricated using standard techniques for stainless steels.
- Cutting: Plasma cutting, laser cutting, or waterjet cutting recommended.
- Forming: Can be formed by hot or cold working; annealing recommended to relieve stresses.
- Welding:
- Methods: Suitable for Gas Tungsten Arc Welding (GTAW), Gas Metal Arc Welding (GMAW), Shielded Metal Arc Welding (SMAW), and other common welding processes.
- Filler Materials: Matching or compatible filler metals such as ERNiCrMo-1.
- Preheat/Postheat: Generally not required, but preheating may be beneficial in thick sections to avoid cracking.
- Weldability: Good weldability with proper technique and filler selection.
Heat Treatment
- Solution Annealing:
- Temperature: 980°C – 1130°C (1800°F – 2075°F)
- Procedure: Heat to specified temperature, hold for adequate time, and rapidly cool (water or air).
- Age Hardening (Precipitation Hardening):
- Temperature: 700°C – 900°C (1300°F – 1650°F)
- Procedure: Heat after solution annealing, hold to form precipitates, then cool.
- Effects:
- Solution Annealing: Enhances ductility and homogenizes the microstructure.
- Age Hardening: Increases strength and hardness through precipitation of secondary phases.
Applications
Customized Package
Oil-Coated Paper
Thick Woven Plastic Bag
Air Cushion Film + Wooden Case
At Alloyxpert
- Sheets and plates are wrapped in oil-coated paper for corrosion protection, placed on wooden pallets, and strapped securely to prevent shifting during transport.
- Bars and rods are bundled together using thick woven plastic bags and carefully packed, ensuring each bundle weighs no more than 1500 KG for safe handling.
- Tubes and pipes are packed in air cushion film to protect them from dirt and scratches. For added protection, they are placed in wooden cases to prevent damage during transit.
Logistics
By Sea
By Air
By Land
Alloyxpert provides three transportation options: sea, land, and air. Sea transportation is the most commonly chosen method for most orders and is therefore regarded as the default transportation mode. Quotations are typically based on terms such as FOB, CFR, or CIF. For urgent requirements, we also offer air transportation, while land transportation is available for specific regional needs.
Contact Us
From Inquiry to Delivery.
We're Here to Provide Top-Quality Steel Solutions.
