Copper Tube ASTM 280

Reference data and engineering information about copper tube astm 280 for piping systems applications.

coppertubeastm280

Overview

Engineering reference data for Copper Tube ASTM 280 in piping systems.

Key Formulas

Continuity

$A_1 v_1 = A_2 v_2$

Mass conservation in pipe flow.

Pressure Drop

$\Delta P = f \frac{L}{D} \frac{\rho v^2}{2}$

Darcy-Weisbach equation.

Pipe Area

$A = \frac{\pi D^2}{4}$

Cross-sectional area of a pipe.

Variables

Symbol	Description	Unit
$D$	Pipe diameter	m
$v$	Flow velocity	m/s
$\Delta P$	Pressure drop	Pa
$f$	Friction factor	—

Temper Designations

ASTM B280 copper tubes are available in two temper conditions:

Temper	Also Called	Description
Drawn (D)	Hard, Rigid	Higher strength, less flexible
Annealed (A)	Soft, Flexible	Lower strength, more pliable

Tube Dimensions

19 rows

ASTM B280 ACR Copper Tube Dimensions
Nominal Size(inches)	Temper	Outside Diameter(inches)	Inside Diameter(inches)	Wall Thickness(inches)	Cross Sectional Area of Bore(in²)
1/8	A	0.125	0.065	0.03	0.0033
3/16	A	0.187	0.128	0.03	0.0129
1/4	A	0.25	0.19	0.03	0.0284
5/16	A	0.312	0.248	0.032	0.0483
3/8	A	0.375	0.311	0.032	0.076
3/8	D	0.375	0.315	0.03	0.078
1/2	A	0.5	0.436	0.032	0.149
1/2	D	0.5	0.43	0.035	0.145
5/8	A	0.625	0.555	0.035	0.242
5/8	D	0.625	0.545	0.04	0.233
3/4	A	0.75	0.68	0.035	0.363
3/4	A	0.75	0.666	0.042	0.348
3/4	D	0.75	0.666	0.042	0.348
7/8	A	0.875	0.785	0.045	0.484
7/8	D	0.875	0.785	0.045	0.484
1 1/8	A	1.125	1.025	0.05	0.825
1 1/8	D	1.125	1.025	0.05	0.825
1 3/8	A	1.375	1.265	0.055	1.26
1 3/8	D	1.375	1.265	0.055	1.26

Source: ASTM B280

Working Pressures

17 rows

ASTM B280 ACR Copper Tube Maximum Working Pressures (based on service temperature max. 150°F / 66°C)
Nominal Size(inches)	Annealed Coils(psi)	Annealed Straight Lengths(psi)	Drawn Straight Lengths(psi)
1/8	2613	—	—
3/16	1645	—	—
1/4	1195	—	—
5/16	1017	—	—
3/8	836	777	1524
1/2	618	664	1302
5/8	525	615	1206
3/4	435	538	1055
7/8	—	495	972
1 1/8	—	420	825
1 3/8	—	373	733
1 5/8	—	347	682
2 1/8	—	—	607
2 5/8	—	—	560
3 1/8	—	—	529
3 5/8	—	—	506
4 1/8	—	—	489

Source: ASTM B280

Design Properties

For working pressure calculations, the following yield strength values apply:

Temper	Yield Strength (S)
Annealed	$S = 5100 \text{ psi}$ (35 MPa)
Drawn	$S = 10000 \text{ psi}$ (69 MPa)

Pressure Rating Conditions

Maximum service temperature: $T_{max} = 150°F$ ( $66°C$ )
ACR tubes are designated by actual outside diameter (OD)
Tubes are produced in straight lengths or coils

Interactive Charts

ASTM B306 Copper Tubes for Drain, Waste and Vent - Dimensions and Working Pressures

ASTM B88 - Seamless Copper Water Tubes - Dimensions

References

Original Source

Source: engineeringtoolbox.com