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Hot / Cold Rolled Inconel 625 Plate , Alloy 625 Plate DIN2.4856 High Strength

Categories Hastelloy Plate
Brand Name: HT
Model Number: Inconel 625
Certification: ISO,BV,SGS
Place of Origin: China,USA,GERMANY,JAPAN
MOQ: 100kg
Price: negotiable
Payment Terms: L/C, T/T, Western Union
Supply Ability: 100kg per month
Delivery Time: 3-50 days
Packaging Details: steel frame or as per the clients' request
Type: Plate, Sheet,Strip, Coil
Length: 0~12m or as per the client's requirements
Width: 0~2500mm or as per the client's requirements
Thickness: 0.3~1200mm or as per the client's requirements
Process: Hot/Cold Rolled
Surface: No.1 No.2D No.2B BA No.3 No.4 No.6 No.7
Packing: Steel Frame, waterproof paper, wooden pallet, wooden case or as per the client's requirements
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    Hot / Cold Rolled Inconel 625 Plate , Alloy 625 Plate DIN2.4856 High Strength

    Inconel 625 Alloy 625 DIN2.4856 plate sheet made in USA SMC/ATI/HAYNES

    1. Inconel 625 Plate Sheet General Properties

    Alloy 625 is an austenitic nickel-chromium-molybdenum-niobium alloy possessing a rare combination of outstanding corrosion resistance coupled with high strength from cryogenic temperatures to 1800°F (982°C).

    The strength of Alloy 625 is derived from the solid-solution hardening of the nickel-chromium matrix by the presence of molybdenum and niobium. Therefore, precipitation-hardening treatments are not required.

    The chemical composition of Alloy 625 is also responsible for its outstanding corrosion resistance in a variety of severe operating environments along with resistance to oxidation and carburization in high temperature service. The alloy is resistant to pitting, crevice corrosion, impingement corrosion, intergranular attack and is almost immune to chloride stress corrosion cracking.

    Alloy 625 can be easily welded and processed by standard shop fabrication practices.

    2. Inconel 625 Plate Sheet Applications

    Aerospace Components – bellows and expansion joints, ducting systems, jet engine exhaust systems, engine thrust-reversers, turbine shroud rings

    Air Pollution Control – chimney liners, dampers, flue gas desulfurization (FGD) components

    Chemical Processing – equipment handling both oxidizing and reducing acids, super-phosphoric acid production

    Marine Service – steam line bellows, Navy ship exhaust systems, submarine auxiliary propulsion systems

    Nuclear Industry – reactor core and control rod components, waste reprocessing equipment

    Offshore Oil and Gas Production – waste flare gas stacks, piping systems, riser sheathing, sour gas piping and tubing

    Petroleum Refining – waste flare gas stacks

    Waste Treatment – waste incineration components


    ASTM..................B 443
    ASME..................SB 443
    AMS ...................5599

    3. Inconel 625 Plate Sheet Chemical Analysis

    Weight % (all values are maximum unless a range is otherwise indicated)

    Nickel58.0 min.Silicon0.50
    Chromium20.0 min.-23.0 max.Phosphorus0.015
    Molybdenum8.0 min.-10.0 max.Sulfur0.015
    Niobium (plus Tantalum)3.15 min.-4.15 max.Titanium0.40
    Carbon0.10Cobalt (if determined)1.0

    Physical Properties


    0.305 lbs/in3
    8.44 g/cm3

    Specific Heat

    0.102 BTU/lb-°F (32-212°F)
    427 J/kg-°K (0-100°C)

    Modulus of Elasticity

    30.1 x 106 psi
    207.5 GPa

    Thermal Conductivity 200°F (100°C)

    75 BTU/hr/ft2/ft/°F
    10.8 W/m-°K

    Melting Range

    2350 – 2460°F
    1290 – 1350°C

    Electrical Resistivity

    50.8 Microhm-in at 70°C
    128.9 Microhm-cm at 210°C

    Mean Coefficient of Thermal Expansion
    Temperature Range
    200937.1 x 10-612.8 x 10-6
    4002047.3 x 10-613.1 x 10-6
    6003167.4 x 10-613.3 x 10-6
    8004277.6 x 10-613.7 x 10-6
    10005387.8 x 10-614.0 x 10-6
    12006498.2 x 10-614.8 x 10-6
    14007608.5 x 10-615.3 x 10-6
    16008718.8 x 10-615.8 x 10-6
    17009279.0 x 10-616.2 x 10-6

    Mechanical Properties

    Typicals Values at 68°F (20°C)

    Yield Strength
    0.2% Offset
    Ultimate Tensile
    in 2 in.
    psi (min.)(MPa)psi (min.)(MPa)% (min.)(max.)
    65,000448125,00086250200 Brinell

    4. Inconel 625 Plate Sheet Corrosion Resistance

    The highly alloyed chemical composition of Alloy 625 imparts outstanding corrosion resistance in a variety of severely corrosive environments. The alloy is virtually immune to attack in mild conditions such as the atmosphere, fresh and sea water, neutral salts and alkaline solutions. Nickel and chromium provide resistance to oxidizing solutions and the combination of nickel and molybdenum supply resistance in non-oxidizing environments. Molybdenum also makes Alloy 625 resistant to pitting and crevice corrosion, while niobium acts as a stabilizer during welding to prevent intergranular cracking. The high nickel content of Alloy 625 makes it virtually immune to chloride stress corrosion cracking.

    The alloy resists attack by mineral acids such as hydrochloric, nitric, phosphoric and sulfuric, and to alkalis and organic acids in both oxidizing and reducing conditions.

    Corrosion-resistance of nickel alloys in 24-hour tests in boiling 40% formic acid.

    AlloyCorrosion Rate
    Alloy 8257.90.2
    Nickel 20010.3-10.50.26-0.27
    Alloy 4001.5-2.70.038-0.068
    Alloy 60010.00.25
    Alloy G-31.8-2.10.046-0.05
    Alloy 6256.8-7.80.17-0.19
    Alloy C-2762.8-2.90.07-0.074

    Corrosion-resistance of nickel alloys in four 24-hour tests in boiling acetic acid

    AlloyAcetic Acid
    Corrosion/Erosion Rate
    Alloy 82510%0.60-0.630.0152-0.160
    Alloy 62510%0.39-0.770.01-0.19
    Alloy C-27610%0.41-0.450.011-0.0114
    Alloy 68680%<0.1*<0.01*

    Resistance of nickel alloys to impingement attack by seawater at 150 ft/sec (45.7 m/s)

    AlloyCorrosion/Erosion Rate
    Alloy 625NilNil
    Alloy 8250.30.008
    Alloy K-5000.040.01
    Alloy 4001.5-2.70.038-0.068
    Alloy 6000.40.01
    Nickel 200401.0

    5. The comparative PREN number for alloy 625 is shown in the table below.

    Pitting resistance equivalency numbers (PREN) for corrosion resistant alloys

    316 Stainless Steel12172.220.4
    317 Stainless Steel13183.823.7
    Alloy 8254221.5326.0
    Alloy 86434214.327.4
    Alloy G-34422732.5
    Alloy 625622293.540.8
    Alloy C-2765816163.545.2
    Alloy 6226020.5143.546.8
    Alloy 6865820.516.33.550.8

    Oxidation Resistance

    The oxidation and scaling resistance of Alloy 625 is superior to a number of heat resistant austenitic stainless steels such as 304, 309, 310 and 347 up to 1800°F (982°C) and under cyclic heating and cooling conditions. Above 1800°F (982°C), scaling can become a restrictive factor in service.

    Fabrication Data

    Alloy 625 can be easily welded and processed by standard shop fabrication practices, however because the high strength of the alloy, it resists deformation at hot-working temperatures.

    Hot Forming

    The hot-working temperature range for Alloy 625 is 1650 – 2150°F (900 – 1177°C). Heavy working needs to occur as close to 2150°F (1177°C) as possible, while lighter working can take place down to 1700°F (927°C). Hot-working should occur in uniform reductions to prevent duplex grain structure

    Cold Forming

    Alloy 625 can be cold-formed by the standard shop fabrication practices. The alloy should be in the annealed condition. Work hardening rates are higher than the austenitic stainless steels.


    Alloy 625 can be readily welded by most standard processes including GTAW (TIG), PLASMA, GMAW (MIG/MAG), SAW and SMAW (MMA). A post weld heat treatment is not necessary. Brushing with a stainless steel wire brush after welding will remove the heat tint and produce a surface area that does not require additional pickling.


    Alloy 625 should preferably be machined in the annealed condition. Since Alloy 625 is prone to work–hardening, only low cutting speeds should be used and the cutting tool should be engaged at all times. Adequate cut depth is necessary to assure avoiding contact with the previously formed work-hardened zone.

    Product Tags:

    incoloy 800 sheet


    alloy 625 plate

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