Alloy 625 Plates


Choudhary Metal is a trusted stockist and supplier of Alloy 625 Plates, also known as Inconel 625, a high-performance nickel-based alloy widely used for its excellent strength and outstanding resistance to aqueous corrosion. These plates are highly suitable for demanding industrial environments where durability and reliability are essential.

The strength of Alloy 625 is mainly derived from the solid solution strengthening effect of molybdenum and columbium (niobium). This unique composition provides exceptional mechanical properties along with superior resistance to oxidation and corrosion.

Alloy 625 also offers excellent weldability and is commonly used for welding high-performance alloys such as AL-6XN alloy. In many applications, matching filler metals are used to join dissimilar metals, making Alloy 625 a versatile material for various fabrication processes.

At Choudhary Metal, we supply premium quality Alloy 625 Plates that meet international standards and are widely used in industries such as chemical processing, marine engineering, aerospace, oil & gas, and power generation.

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

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

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.

Physical Properties

Density: 0.305 lb/in 3
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 -

* 70°F to indicated temperature.

Mechanical Properties

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
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