How much does steel wieigh?

# Thread: How much does steel wieigh?

Join Date
Feb 2005
Location
S.E. MA
Posts
374

## 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.

2. Master Welder
Join Date
Apr 2006
Location
Soda springs,Id
Posts
4,232

## 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

3. WeldingWeb Journeyman
Join Date
Jan 2004
Location
Winnipeg, Manitoba
Posts
141

## 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.

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

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

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

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!

8. Master Welder
Join Date
Jan 2004
Location
Northern Cal., Shasta County
Posts
8,626

## 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. WeldingWeb Journeyman
Join Date
Aug 2006
Location
Middleburg, FL USA
Posts
72

## Re: How much does steel wieigh?

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.

10. WeldingWeb Apprentice
Join Date
Jul 2005
Location
Yorkshire, UK
Posts
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. WeldingWeb Journeyman
Join Date
Oct 2006
Location
Posts
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. ## 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. ## Re: How much does steel wieigh?

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

14. WeldingWeb Journeyman
Join Date
Oct 2006
Location
Posts
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. WeldingWeb Journeyman
Join Date
Dec 2006
Posts
61

## Re: How much does steel wieigh?

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. WeldingWeb Craftsman
Join Date
Sep 2006
Posts
1,052

## Re: How much does steel wieigh?

Good info, thanks.. er Mate is it? uh.. what is that in cubits?

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

Lots of good info here, thanks.

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•