Introduction to Inconel 601 Round Bar
Inconel 601, designated UNS N06601, is a nickel-chromium-iron alloy with aluminum additions, developed for high-temperature oxidation resistance and good corrosion performance in many industrial environments. It is commonly supplied as round bar for furnace fixtures, radiant tubes, heat-treatment baskets, and other components that must survive continuous heat. When estimating material cost, freight, and machining yield, engineers need a reliable weight per meter figure, which is what this chart provides.
How to Calculate Round Bar Weight
The theoretical weight of a round bar is calculated from its cross-sectional area, length, and material density. The standard formula is weight per meter equals the density of the alloy multiplied by the cross-sectional area of the bar. In practical form, weight per meter in kilograms can be estimated as the square of the diameter in millimeters multiplied by a coefficient that depends on density. For Inconel 601, the typical density is approximately 8.11 g/cm3, which corresponds to a coefficient near 0.00637. The chart below follows the commonly published nominal weight table, which is based on a slightly lower nominal density, so calculated values may differ by roughly two to three percent from the precise theoretical value.
Inconel 601 Round Bar Weight Chart, Metric
The following table lists nominal weight per meter for metric diameters. Diameter is given in millimeters and weight in kilograms per meter. These are nominal values for solid round bar and do not include manufacturing tolerances.
3 mm - 0.06 kg/m; 4 mm - 0.10 kg/m; 5 mm - 0.16 kg/m; 6 mm - 0.22 kg/m; 7 mm - 0.30 kg/m; 8 mm - 0.40 kg/m; 10 mm - 0.62 kg/m; 12 mm - 0.89 kg/m; 14 mm - 1.22 kg/m; 15 mm - 1.40 kg/m; 16 mm - 1.59 kg/m; 18 mm - 2.01 kg/m; 20 mm - 2.48 kg/m; 22 mm - 3.00 kg/m; 24 mm - 3.57 kg/m; 25 mm - 3.88 kg/m.
Inconel 601 Round Bar Weight Chart, Inch
For imperial ordering, the nominal weight per meter for common inch sizes is listed below. Diameter is given in inches and weight in kilograms per meter.
1/8 in - 0.06 kg/m; 3/16 in - 0.14 kg/m; 1/4 in - 0.25 kg/m; 5/16 in - 0.39 kg/m; 3/8 in - 0.56 kg/m; 7/16 in - 0.77 kg/m; 1/2 in - 1.00 kg/m; 9/16 in - 1.22 kg/m; 5/8 in - 1.56 kg/m; 11/16 in - 1.89 kg/m; 3/4 in - 2.25 kg/m; 7/8 in - 3.07 kg/m; 1 in - 4.03 kg/m.
Practical Notes for Weight Estimation
Weight figures from any chart are nominal and should be used for budgeting and logistics planning rather than for exact billing. The actual weight of a delivered bar depends on the real density of the heat, the diameter tolerance of the mill, and the surface condition. For bars outside the range listed here, apply the formula with the appropriate coefficient, and for critical applications confirm the exact theoretical weight with the supplier's mill certificate or the applicable ASTM specification such as ASTM B166 for UNS N06601 bar.
FAQ
Q: What is the density of Inconel 601?
A: The typical density of Inconel 601 is approximately 8.11 g/cm3. Published weight tables sometimes use a slightly lower nominal density, which can cause a difference of two to three percent in calculated weights.
Q: How do I calculate the weight of an Inconel 601 round bar?
A: Multiply the cross-sectional area by the density and the length. As a shortcut, weight per meter in kilograms is approximately the diameter in millimeters squared multiplied by a coefficient near 0.00637 for Inconel 601.
Q: What standard applies to Inconel 601 bar?
A: UNS N06601 bar and rod are commonly supplied to ASTM B166, which covers nickel-chromium-iron alloys including Inconel 601, with ASME SB-166 as the corresponding code edition.
Q: Are the weights in the chart exact?
A: No. They are nominal values for budgeting and logistics. Actual weight depends on mill tolerances, heat density, and surface finish, and should be confirmed against the mill certificate for critical applications.
Q: What is Inconel 601 used for?
A: Inconel 601 is used for furnace fixtures, radiant tubes, heat-treatment baskets, and other high-temperature equipment where oxidation resistance at elevated temperatures is required, along with good corrosion resistance in many chemical environments.
Q: Can the same chart be used for Inconel 600 or 625 bars?
A: Not directly. Each alloy has a different density, so the coefficient in the weight formula changes. Inconel 600 and 625 are denser than 601, and their weight tables should be calculated with their own density values.
