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Alloy 625 Plates
Alloy 625 plates or Inconel 625 is a nickel-base alloy used both for its high electricity and excellent aqueous corrosion resistance. The strength of alloy 625 is mostly a strong solution effect from molybdenum and columbium. Alloy 625 has great weldability and is frequently used to weld AL-6xn alloy. Matching filler metals also are used to enroll in distinctive metals.
Chemistry
| Cr | Ni | Mo | Co | Cb+Ta | Al | Ti | C | Fe | Mn | Si | P | S | |
| MIN | 20.0 | - | 8.0 | - | 3.15 | - | - | - | - | - | - | - | - |
| MAX | 23.0 | Balance | 10.0 | 1.0 | 4.15 | 0.4 | 0.4 | 0.1 | 5.0 | 0.5 | 0.5 | 0.015 | 0.015 |
Specifications
• AMS 5666, AMS 5837
• ASME SB 443 Gr 1, ASME SB 446 Gr 1
• ASTM B 443 Gr 1, ASTM B 446 Gr 1
• EN 2.4856
• ISO 15156-3
• NACE MR0175-3
• UNS N06625
• Werkstoff 2.4856
• ASME SB 443 Gr 1, ASME SB 446 Gr 1
• ASTM B 443 Gr 1, ASTM B 446 Gr 1
• EN 2.4856
• ISO 15156-3
• NACE MR0175-3
• UNS N06625
• Werkstoff 2.4856
Inventory
625 Coil, 625 Plate, 625 Round Bar, 625 Sheet, 625 Weld Wire
Common Trade Names
Inconel® 625, Alloy 625, Nickel 625
Features
• High creep-rupture strength
• Oxidation resistant to 1800°F
• Good fatigue resistance
• Excellent weldability
• Outstanding resistance to chloride pitting and crevice corrosion
• Immune to chloride ion stress corrosion cracking
• Resistant to seawater under both flowing and stagnant conditions and under fouling
• Oxidation resistant to 1800°F
• Good fatigue resistance
• Excellent weldability
• Outstanding resistance to chloride pitting and crevice corrosion
• Immune to chloride ion stress corrosion cracking
• Resistant to seawater under both flowing and stagnant conditions and under fouling
Applications
• Aircraft ducting systems
• Jet engine exhaust systems
• Engine thrust-reverser systems
• Bellows and expansion joints
• Turbine shroud rings
• Flare stacks
• Seawater components
• Chemical process equipment handling mixed acids both oxidizing and reducing.
• Jet engine exhaust systems
• Engine thrust-reverser systems
• Bellows and expansion joints
• Turbine shroud rings
• Flare stacks
• Seawater components
• Chemical process equipment handling mixed acids both oxidizing and reducing.
Physical Properties
Density: 0.305 lb/in 3
Melting Point: 2350-2460°F
Melting Point: 2350-2460°F
| Temperature, °F | 70 | 400 | 600 | 800 | 1000 | 1200 | 1400 | 1600 |
| Coefficient* of Thermal Expansion, in/in°F x 10 -6 | - | 7.3 | 7.4 | 7.6 | 7.8 | 8.2 | 8.5 | 8.8 |
| Thermal Conductivity Btu • ft/ft2 • hr • °F |
5.7 | 7.2 | 8.2 | 9.1 | 10.1 | 11.0 | 12.0 | 13.2 |
| Modulus of Elasticity, Dynamic psi x 10 6 | 30 | 28 | 28 | 27 | 26 | 24 | 23 | - |
Mechanical Properties
Representative Tensile Properties, Bar
| Temperature,°F | 70 | 400 | 600 | 800 | 1000 | 1200 | 1400 | 1600 |
| Ultimate Tensile Strength, ksi | 144 | 134 | 132 | 132 | 130 | 119 | 78 | 40 |
| 0.2% Yield Strength, ksi | 84 | 66 | 63 | 61 | 61 | 60 | 59 | 39 |
| Elongation, % | 44 | 45 | 42.5 | 45 | 48 | 34 | 59 | 117 |
Typical Rupture Strength Bar, Stress to Rupture at Indicated Time
| Temperature, °F | 1200 | 1300 | 1400 |
| 100 Hours, ksi | 59 | 34 | 18 |
| 1,000 Hours, ksi | 43 | 23 | 12 |