Alloy 600

Alloy 600 Nickel Pipe

UNS N06600 / W.Nr. 2.4817

COMMON TRADE NAMES: Inconel® 600, Sanicro® 70

Alloy 600 is a nickel-chromium-iron solid solution strengthened alloy with a nominal chemical composition of 72% nickel, 16% chromium, and 8% iron. It is commonly referred to by the tradename Inconel® 600 and the universal designation UNS N06600. Alloy 600 offers good corrosion resistance in many media with superior oxidation resistance at elevated temperatures.


Corrosion graphic

Corrosion Resistance

Alloy 600 has outstanding corrosion resistance imparted by the dual corrosion fighting power of chromium and nickel. Chromium resists corrosion from oxidizing media while nickel defends against attack from many reducing agents. Alloy 600 exhibits good corrosion resistance in reducing acids, mildly oxidizing acids, high purity water, and other media. However, Alloy 600 is not suitable for strong oxidizing acids such as hot nitric acid. It is essentially immune to chloride stress corrosion cracking.
Service Temperature

Elevated Temperature Resistance

Alloy 600 provides excellent oxidation resistance at temperatures up to 2150°F (1177°C). However, it is susceptible to sulfidation attack.
Mechanical Properties

Inconel 600 Mechanical Properties

Alloy 600 can be provided in the lower strength, annealed condition, or strengthened through the pilger process. Alloy 600 maintains excellent toughness even in the higher strength conditions and maintains toughness at cryogenic temperatures.
heat treatment logo

Inconel 600 Heat Treatment

While Alloy 400 cannot be strengthened by heat treating, annealing or stress relieving are commonly used after hot working or cold working operations. Stress-relieving is conducted at 1400°F - 1600°F (760°C - 871°C). Stress-relieving is performed after cold working to reduce residual stress and prevent distortion. Annealing is performed at 1700°F - 1900°F (927°C - 1038°C) to restore full softness.


Alloy 600 has good hot and cold workability in the annealed condition. Hot-working should be done above 1600°F (871°C) to ensure adequate ductility, while cold work should be performed below 1200°F (649°C).


Alloy 600 is a versatile alloy used in many different applications, including the chemical process industry, aerospace, food processing, electronics, oil and gas, and nuclear power generation. Its elevated temperature oxidation resistance makes it a good choice for heat-treating fixtures, furnaces, incinerators, and other high-temperature equipment. CRA offers specialty alloy 600 seamless pipe & tube for use in multiple industries and applications, including:

  • Chemical Processing
  • Oil & Gas
  • Electronics
  • Nuclear Power Generation
  • Food Processing
  • Aerospace
  • High-temperature Environments
  • Heat-treating Fixtures
  • Furnaces
  • Incinerators

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Inconel 600 Chemical Composition

CCrFeMnSiCuSNi + Co
≤ 0.1514 - 176 - 10≤ 1≤ 0.5≤ 0.5≤ 0.015≥ 72
(mass %)

Inconel 600 Specifications

ASTM B161, ASTM B163, ASTM B167, ASME SB161, ASME SB163, ASME SB167, AMS 5580, MIL-T 23227

Specified Mechanical Properties in Annealed Condition

Per ASTM B161 / ASTM B163 / ASTM B167, ASME SB161 / ASME SB163 / ASME SB167, AMS 5580, MIL-T 23227

Tensile StrengthYield StrengthElongation
minimum, ksiminimum, ksiminimum, %
*Higher strength properties can be provided in the cold hardened condition.

Typical Physical & Mechanical Properties in Annealed Condition

Thermal ExpansionX10-6/°F5.
Elastic Modulus103 ksi31.130.529.728.827.825.7
Poisson Ratio-0.3270.3190.3120.3070.301-
Thermal ConductivityBtu-in/h·ft2 ·°F103109121133145139
Specific HeatBtu/lb·°F0.1060.1110.1160.1210.1260.118
Yield Strengthksi352624232134
Tensile Strengthksi807573706988

Manufacturing Process

Steel MakingElectric Arc Furnace followed by Vacuum Oxygen Decarburization (VOD) or Argon Oxygen Decarburization (AOD).
Pipe MakingConventional Seamless Cold Finished Pipe and Tube Manufacturing Processes.
Heat TreatmentCannot be hardened by heat treatment. May be provided in the annealed or cold hardened condition.

Manufacturing Capabilities

CRA offers this alloy in:
Seamless Pipe

MIN OD: 2-1/16″ (2.0625″)
MAX OD: 10-3/4″ (10.750”)
THICKNESS: Up to 1.925”
LENGTHS: Up to 70′

Standard & Non-Standard Sizes Available.

Manufactured Material Available as Quickly as 1 Week.

Non-Standard Mill Quantities Accommodated