1" Copper Pipe
Posted: Sun Dec 23, 2007 2:22 am
How high do you think that I could pressurize 1" copper pipe is I sheathed the whole chamber in 1" couplings? I believe to start the copper can go to 150 psi to 200 psi, correct?
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Posted: Sun Dec 23, 2007 2:27 am
From what I have heard before, copper is rated to 300psi, and fails at 400psi. Correct me if Im wrong though.
Posted: Sun Dec 23, 2007 2:45 am
Depends on what it is, I think you can have K, L, M and DWV copper pipe all with different ratings.
Posted: Sun Dec 23, 2007 3:15 am
Depends on wall thickness apparantly.
.049" 550psi
.065 700
.083 950
.095 1100
.109 1300
.120 1400
Calculation Basis: Annealed (Temper 060), seamless copper tubing ASTM B-75 or equivalent. System temperatures between -20°F and 100°F with allowable stress of 6000 psi. Ultimate tensile strength of 30,000 psi. Safety factor of 5. Reference: ANSI B 31.3 Code. (For more specific working pressure information regarding a particular tubing, consult with the actual manufacturer of the tubing.)
.049" 550psi
.065 700
.083 950
.095 1100
.109 1300
.120 1400
Calculation Basis: Annealed (Temper 060), seamless copper tubing ASTM B-75 or equivalent. System temperatures between -20°F and 100°F with allowable stress of 6000 psi. Ultimate tensile strength of 30,000 psi. Safety factor of 5. Reference: ANSI B 31.3 Code. (For more specific working pressure information regarding a particular tubing, consult with the actual manufacturer of the tubing.)
Posted: Sun Dec 23, 2007 9:28 am
I haven't heard anything so absurdly generalised as that in quite a while.From what I have heard before, copper is rated to 300psi, and fails at 400psi. Correct me if Im wrong though.
Do you really think that a pipe would be rated for 3/4 of its burst pressure?
Firstly, there is no 1" DWV copper, DWV copper tube starts at 1-1/4"
If it is Type M (the thinnest walled and most common), it is rated for 580 psi, and has been found to burst at slightly over 3800 psi.
If it is Type L (medium strength), it is rated for 850 psi, and has been found to burst at ~5100 psi.
If it Type K (strongest type), it is rated for 1126 psi, and has been found to burst at ~7200 psi.
Posted: Sun Dec 23, 2007 2:35 pm
I believe I've posted a couple of times that all affordable sizes of domestic copper pipe have a safe working pressure of at least 300psi.
Unaffordable is where it goes over £30/m and you'd need your head looking at for buying it for a cannon
The lowest working pressure I know of is 54mm half hard plumbing pipe (the weakest type I've seen commonly sold). Thats 392psi.
All imperial sizes have higher ratings than metric equivalents.
Unaffordable is where it goes over £30/m and you'd need your head looking at for buying it for a cannon
The lowest working pressure I know of is 54mm half hard plumbing pipe (the weakest type I've seen commonly sold). Thats 392psi.
All imperial sizes have higher ratings than metric equivalents.
Posted: Sun Dec 23, 2007 4:50 pm
Apart from that, copper tube has very large safety factors (~7), so you don't really need to worry about bursting any commonly available Type M copper, even with some like an unregulated nitrogen tank (although I certainly wouldn't recommend it).