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Inconel 601 Pipes & Tubes

A high-temperature Nickel-Chromium alloy with Aluminum addition for outstanding resistance to oxidation up to 2200°F (1200°C).

Alloy 601 Technical Overview

Inconel 601 (UNS N06601) is a nickel-chromium alloy with an addition of aluminum for outstanding resistance to oxidation and other forms of high-temperature corrosion. It also has high mechanical properties at elevated temperatures. Alloy 601 is used for industrial furnaces; heat-treating equipment such as baskets, muffles, and retorts; petrochemical and other process equipment; and gas-turbine components. The addition of aluminum allows it to form a protective oxide scale that remains tightly adherent even under conditions of severe thermal cycling. Steel Emporium supplies Grade 601 in seamless and welded pipes and tubes tailored for extreme thermal environments.

Key Material Advantages

High Heat Oxidation

Unmatched resistance to oxidation at temperatures up to 1200°C (2200°F).

Spalling Resistance

The oxide scale resists spalling even under severe thermal cycling.

Aqueous Corrosion

Good resistance to aqueous corrosion due to its high chromium content.

Table 1: Chemical Composition (%)
GradeNiCrAlFeMnCSiSCu
Inconel 601 58.0 - 63.0 21.0 - 25.0 1.0 - 1.7 Balance 1.0 max 0.10 max 0.50 max 0.015 max 1.0 max
Table 2: Mechanical Properties (Typical)
PropertyAnnealed ConditionSolution Treated
Tensile Strength (MPa)650 MPa550 MPa
Yield Strength (MPa)300 MPa240 MPa
Elongation (% in 50mm)40%45%
Hardness (Brinell)150 - 200 HB120 - 170 HB
Table 3: Physical Properties
DensityMelting RangeThermal ConductivityElectrical Resistivity
8.11 g/cm³1360 - 1411 °C11.2 W/m·°C1.18 µΩ·m
Table 4: International Equivalent Standards
StandardUNS NumberWerkstoff No.EN DesignationOR Name
Alloy 601N066012.4851NiCr23FeInconel 601
Table 5: Inconel 601 Pipe Weight Chart (Kg/Mtr)
Nominal Size (NB)OD (mm)SCH 10SCH 40SCH 80
1/2"21.341.281.642.14
3/4"26.671.712.222.93
1"33.402.113.274.28
2"60.333.975.507.56
4"114.3011.1416.2422.56

Industrial Applications

Radiant Tubes

Gas-fired radiant tubes and high-temp burners.

Thermal Oxidizers

Air pollution control equipment components.

Petrochemical

Ammonia reformers and catalyst support grids.

Gas Turbines

Combustor cans and high-temp seals.

Chemical Process

High-temperature heaters and process vessels.

Furnace Parts

Annealing tubes, retorts, and muffles.

Frequently Asked Questions

The primary difference is the addition of Aluminum (1.0-1.7%) in Inconel 601. This addition significantly improves its resistance to high-temperature oxidation and spalling compared to Alloy 600.

Inconel 601 can be used in continuous oxidizing environments at temperatures up to 2200°F (1200°C). It maintains high mechanical strength even at these extreme heats.

Excellent. The oxide scale formed on Alloy 601 is extremely adherent, preventing it from spalling or falling off during rapid heating and cooling cycles.

Inconel 601 is non-magnetic at room temperature and remains stable in its austenitic phase under high temperatures.

It is highly preferred in Heat Treating, Aerospace, and Petrochemical industries for radiant tubes, burners, and combustion chambers.
Quick Specification
StandardASTM B167 / B163
UNS No.N06601
NB Sizes1/2" to 20" NB
ManufacturingSeamless / Welded
OriginGlobal Brands
CertificationMTC 3.1 Certified
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