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Monel 400 round bar weight calculator

Enter the dimensions of a Monel 400 round bar and this works out its volume and weight. Nickel-copper alloy, 67/23, for seawater service.

Total weight
4.319 69kg
≈ Rounded Monel 400 round bar weight
Weight of one round bar
4.319 69
Volume of one piece
490.874
Weight per metre of length
4.319 69 kg/m
Density used
8800 kg/m3
Show the working
  1. Diameter = 25
  2. Length = 1000
  3. Number of pieces = 1
  4. volume_mm3 = pi * (25/2)^2 * 1000 = 490 874
  5. Volume of one piece = 490 874 / 1000 = 490.874
  6. Density used = 8800 = 8800
  7. Weight of one round bar = 490 874 * 8800 / 1e9 = 4.319 69
  8. Total weight = 4.319 69 * 1 = 4.319 69
  9. Weight per metre of length = 490 874 / 1000 * 1000 * 8800 / 1e9 = 4.319 69

Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.

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    The formula

    • Volume = pi x (diameter / 2)^2 x length
    • Weight = volume x density, with density = 8800 kg/m3
    • One cubic millimetre of a material at 1000 kg/m3 weighs exactly one milligram, so the millimetre-to-kilogram step is a shift of the decimal point rather than a rounded factor.

    Nickel-copper alloy, 67/23, for seawater service.

    Dimensions are nominal. Mill tolerances on thickness, and the corner radii on formed sections, both move the real weight by a percent or two.

    Every field takes inches or feet as readily as millimetres: change the unit next to it and the conversion is done exactly before the arithmetic starts.

    Frequently asked

    What is the density of Monel 400?

    8800 kg/m3, which is 8.800 g/cm3. Nickel-copper alloy, 67/23, for seawater service.

    How do you calculate the weight of a Monel 400 round bar?

    Volume = pi x (diameter / 2)^2 x length. Multiply the volume by the density of Monel 400, 8800 kg/m3, taking care that both are in the same unit system.

    Can I enter dimensions in inches?

    Yes. Each dimension field has its own unit selector, and inch, foot, millimetre, centimetre and metre entries are all converted exactly before anything is multiplied.

    Where the numbers come from

    • Densities are nominal room-temperature values for the grade named, drawn from the usual mill and handbook figures.

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