How much does steel wieigh?
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  1. #1
    Join Date
    Feb 2005
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    S.E. MA
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    How much does steel wieigh?

    One of the most useful numbers to keep in your head is: one square foot of 1" steel weighs 40#
    (really 40.8#, but I don't keep the small stuff upstairs well)


    So, quick math says a square 1/4" thick being on quarter the dimension, is 10# ,1/8" is 5#, etc.

    A 1" square bar 12' long is 40#, or 3.3# foot x 20'= 66#

    A 3" square tube with 1/4" wall one foot long is nothing but a one square foot piece folded up, it's 10# also.

    No, for the purist, this figures aren't accurate, but if you find yourself without a chart, and want a quick guesstimate, this works well.
    Just my opinion, not from a book, just from the road.
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  2. #2
    Join Date
    Apr 2006
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    Re: How much does steel wieigh?

    Good one,Tessdad. I learned that yrs ago, but it still comes in handy when weight is a concern.
    Thanks,
    Mike
    Ol' Stonebreaker
    "Experience is the name everyone gives to their mistakes"

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  3. #3
    Join Date
    Jan 2004
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    Winnipeg, Manitoba
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    Re: How much does steel wieigh?

    Those weights are close enough - to determine if you're going to bust a nut or get another beer and wait for help.
    Here in the Great White North
    Mosquitoes can't fly at 40 below

  4. #4
    Join Date
    Jul 2006
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    moncks corner, sc
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    Re: How much does steel wieigh?

    sheet is measured by this formula
    thickness(in decimal format, ie .25) times width in inches times length in inches times .2836
    a 12x12 1/2" plate
    .5 x 12 x 12 x .2836= 20.4192

    3 ga 4x8 sheet
    .229 x 48 x 96 x .2836 = 299.26

    when using angles and tubing, i just do the math is it would be laid flat.

  5. #5
    Join Date
    Apr 2006
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    Sydney Australia
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    Re: How much does steel wieigh?

    Not really relevant but of interest:

    Aluminium weighs about 2.7kgs per square meter per millimeter in thickness

    Surprisingly glass weighs about 2.6kgs per square meter per millimeter in thickness

  6. #6
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    Apr 2006
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    Re: How much does steel wieigh?

    By the way steel weighs about 7.8kgs per square meter per millimeter in thickness

  7. #7
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    Re: How much does steel wieigh?

    Quote Originally Posted by Brett
    By the way steel weighs about 7.8kgs per square meter per millimeter in thickness


    translate that to english..

    something we use here in the states..

    ...zap!


    I am not completely insane..
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  8. #8
    Join Date
    Jan 2004
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    Re: How much does steel wieigh?

    Well, here's a secret revealed. (I hope).

    Things like this tool keep dumbies like me dumb but happy.

    No more ciphering, just buttons to punch. I down loaded this quite awhile back. No thinking required since then.

    This is a little free steel weight calculator. It's a tough one to find so save a copy. It's a sweetie. Even calculates weights in Ozzie talk.

    This see how this link works out.

    http://www.metalsuppliersonline.com/...WeightCalc.asp

    I want to edit to add this link to the same claculator only it remains as an online calculator.

    http://www.steelforge.com/infoservices/steelweights.asp

  9. #9
    Join Date
    Aug 2006
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    Middleburg, FL USA
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    Re: How much does steel wieigh?

    Quote Originally Posted by zapster
    translate that to english..

    something we use here in the states..

    ...zap!
    It's funny. Where I work we primarily use mm for our dimensions (our largest part is probably 20' (~6100mm) long) but we still use pounds for our weights.
    Always looking for another old VW, especially in the southeast.

  10. #10
    Join Date
    Jul 2005
    Location
    Yorkshire, UK
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    40

    Re: How much does steel wieigh?

    Quote: "translate that to english.. something we use here in the states..

    ...zap!"

    Very whimsical - what is it they say? Two cultures separated by a common language... Is that why a 10 thou clearance seems close, but 0.25mm sounds like it'll fit like your hand in a bucket?

  11. #11
    Join Date
    Oct 2006
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    Wisconsin, but close to Canada
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    124

    Re: How much does steel wieigh?

    Calculating material in my former job steel weighs .283 lb per 1 inch cubic of steel. Alum. weighs around .207 lb per cubic inch if I remember right.

  12. #12
    Join Date
    Sep 2006
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    NJ, USA
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    Re: How much does steel weigh?

    The density of steel is approximately 0.283 pounds per cubic inch.

    The density of aluminum is approximately 0.097 pounds per cubic inch.

    Slight variations in density occur with some of the different alloys, both steel and aluminum, but if you are worrying about density variations from 'nominal' out to three decimal places, you know (or should!) how to look up or ask for that info.

    I like that 1 ft2 of 1 inch thick steel is 40 pounds. A calculator is not -always- handy.

  13. #13
    Join Date
    May 2006
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    Wellington Austraila
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    947

    Re: How much does steel wieigh?

    Quote Originally Posted by zapster
    translate that to english..

    something we use here in the states..

    ...zap!
    lol I hear you Zap i'm in the same country as Brett and still
    use feet and inch's more than metric but thats just me
    Creative metal


    A married man should forget his mistakes. There's no use in two people remembering the same thing!

  14. #14
    Join Date
    Oct 2006
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    Wisconsin, but close to Canada
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    124

    Re: How much does steel wieigh?

    Moonrise points out a good point about alloys, daaaaaaa on me. I would call a major steel supplier and request a material book. Sweet talk them should be able to get it for free.

  15. #15
    Join Date
    Dec 2006
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    61

    Re: How much does steel wieigh?

    Quote Originally Posted by bugdust
    It's funny. Where I work we primarily use mm for our dimensions (our largest part is probably 20' (~6100mm) long) but we still use pounds for our weights.
    Yea, it’s the same here where I go to school. Soon everyone is going to switch to metric I think. Metric now when you’re doing auto work is on even the American cars.

  16. #16
    Join Date
    Sep 2006
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    1,052

    Re: How much does steel wieigh?

    Good info, thanks.. er Mate is it? uh.. what is that in cubits?
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  17. #17
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    Re: How much does steel wieigh?

    Lots of good info here, thanks.
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