High Quality Inconel Sheets & Plates

600 / 601 / 625 / 718 • Formable • Ductile • Machinable

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Inconel Grades 600 / 601 / 625 / 718 Explained

Inconel 600, 601, 625, and 718 are high-performance nickel-based superalloys engineered for extreme temperature, high-pressure, and highly corrosive service environments where ordinary stainless steels and conventional alloys fail. These alloys retain exceptional mechanical strength, oxidation resistance, and structural integrity across a wide temperature range, while offering outstanding resistance to chloride stress corrosion cracking, carburization, and scaling. Each grade is designed for specialized performance—Inconel 600 for general corrosion and heat resistance, 601 for high-temperature oxidation protection, 625 for superior corrosion and fatigue strength, and 718 for ultra-high tensile and creep-rupture strength in critical aerospace and high-stress mechanical systems.

Widely used in aerospace, gas turbines, oil & gas, chemical processing, marine engineering, heat treatment, nuclear power, and high-temperature industrial equipment, these Inconel grades combine lightweight strength with long-term durability under extreme thermal and chemical exposure. Their excellent weldability, fatigue resistance, and resistance to thermal cycling make them ideal for sheets, plates, tubes, and precision-fabricated components in mission-critical applications. With a powerful balance of strength, corrosion resistance, and thermal stability, Inconel 600/601/625/718 are the preferred nickel alloys for high-temperature, high-pressure, and highly corrosive service conditions.

600/601/625/718 INCONEL SHEETS AND PLATES EQUIVALENT GRADES

STANDARD UNS WERKSTOFF NR. AFNOR GOST OR BS JIS EN
Inconel 600 N06600 2.4816 NC15FE11M MHXMu,28-2,5-1,5 3I4868 NA13 NCF600 NiCr15Fe
Inconel 601 N06601 2.4851 NC23FeA XH60BT 3I4868 NA49 NCF601 NiCr23Fe
Inconel 625 N06625 2.4856 NC22DNB4M XH75MbTbO 3I4602 NA21 NCF625 NiCr22Mo9Nb
Inconel 718 N07718 2.4668 NCF718

SPECIFICATION OF INCONEL 600/601/625/718 SHEETS AND PLATES

Standard ASTM B168 / ASME SB168
Dimension Standard JIS, AISI, ASTM, GB, DIN, EN, etc
Width 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
Length 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
Thickness 0.3 mm to 120 mm
Form Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc.
Surface Finishing Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, Chequered, embossed, hair line, sand blast, Brush, etching, SATIN (Met with Plastic Coated) etc.

CHEMICAL COMPOSITION OF INCONEL 600/601/625/718 SHEETS AND PLATES

Grade Ni Fe C Mn Si Cu Cr S Mo Co Al Ti Nb
600 72.0 min 6.0 – 10.0 0.15 max 1.0 max 0.5 max 0.5 max 14.0 – 17.0 0.015 max
601 58.0 – 63.0 Balance 0.10 max 1.0 max 0.50 max 1.0 max 21.0 – 25.0 0.015 max 8.0 – 10.0 1.0 – 1.7
625 58.0 max 5.0 max .10 max .50 max .50 max 20.0 – 23.0 .015 max 8.0 – 10.0 1.0 max .40 max .40 max 3.15 – 4.15
718 50 – 55 0.08 max 0.35 max 0.35 max 0.3 max 17 – 21 .015 max 2.8 – 3.3 1.0 max

MECHANICAL PROPERTIES OF INCONEL 600/601/625/718 SHEETS AND PLATES

Grade Tensile (psi) 2% Yield (psi) Elongation (%)
600 95,000 45,000 40
601 80,000 30,000 35
625 Psi – 135,000 , MPa – 930 Psi – 75,000 , MPa – 517 42.5 %
718 Psi – 135,000 , MPa – 930 Psi – 70,000 , MPa – 482 45 %

MECHANICAL PROPERTIES OF INCONEL 625 AT DIFFERENT TEMPERATURES

Temp° F Tensile (psi) 2% Yield (psi) Elongation in 2″ (%)
70 144,000 84,000 44
400 134,000 66,000 45
600 132,000 63,000 42.5
800 131,500 61,000 45
1000 130,000 60,500 48
1200 119,000 60,000 34
1400 78,000 58,500 59
1600 40,000 39,000 117

💡 Practical Difference in Use – Inconel 600 / 601 / 625 / 718

Inconel 600

  • Excellent oxidation & carburization resistance
  • Good strength at high temperatures
  • Resists ammonia, chlorides & alkalis
  • Used mainly in heat & chemical environments

Inconel 601

  • Superior oxidation resistance above 1000°C
  • Excellent spalling resistance
  • High aluminum content for furnace use
  • Best for extreme thermal cycles

Inconel 625

  • Exceptional corrosion resistance
  • Very high tensile & fatigue strength
  • Resists chloride SCC & seawater
  • Best for offshore & chemical service

Inconel 718

  • Highest mechanical strength among all
  • Outstanding creep & fatigue resistance
  • Precipitation-hardened alloy
  • Used in aerospace & turbines

Applications of Inconel Sheets and Plates

Inconel 600

  • Heat treatment furnaces
  • Chemical reactors & heaters
  • Electrical resistance equipment
  • Condensers & heat exchangers

Inconel 601

  • Industrial furnaces & burners
  • Radiant tubes & furnace baskets
  • Thermal processing equipment
  • High-temperature exhaust systems

Inconel 625

  • Offshore piping & risers
  • Aerospace exhaust systems
  • Chemical reactors & tanks
  • Seawater heat exchangers

Inconel 718

  • Jet engine components
  • Gas turbine discs & shafts
  • Nuclear reactor components
  • High-stress aerospace structures

Industries That Use Inconel 600 / 601 / 625 / 718 Sheets & Plates

Inconel 600

Chemical & Heat Processing Industry

Uses

Heaters, reactors, heat exchangers, furnace parts.

Why 600?

Excellent resistance to heat, oxidation & chemicals.

Inconel 601

Thermal Processing & Furnace Industry

Uses

Burners, radiant tubes, furnace internals.

Why 601?

Outstanding high-temperature oxidation resistance.

Inconel 625

Offshore, Marine & Chemical Industry

Uses

Seawater piping, risers, chemical vessels.

Why 625?

Exceptional corrosion & chloride SCC resistance.

Inconel 718

Aerospace, Gas Turbine & Nuclear Industry

Uses

Jet engines, turbine discs, reactor parts.

Why 718?

Highest strength, fatigue & creep resistance.

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