Copper Tube: Type ACR – annealed

Dimensions and Physical Characteristics of Copper Tube: ACR (Air-Conditioning and Refrigeration Field Service)

Nominal or standard size, in inches	Nominal dimensions, inches
	Outside diameter	Inside diameter	Wall thickness
1/4	0.25	.200	0.025
3/8	0.375	0.315	0.03
1/2	0.5	0.43	0.035
5/8	0.625	0.545	0.04
3/4	0.75	0.666	0.042
7/8	0.875	0.785	0.045
1-1/8	1.125	1.025	0.05
1-3/8	1.375	1.265	0.055
1-5/8	1.625	1.505	0.06
2-1/8	2.125	1.985	0.07
12-5/8	2.625	2.465	0.08
3-1/8	3.125	2.945	0.09
3-5/8	3.625	3.425	0.1
4-1/8	4.125	3.905	0.11

Nominal or standard size, in inches	Calculated values (based on nominal dimensions)
	Weight of tube only, pounds per linear ft.	Volume of tube, cu. ft. per linear ft.
1/4	0.068	0.00022
3/8	0.126	0.00054
1/2	0.198	0.00101
5/8	0.285	0.00162
3/4	0.362	0.00242
7/8	0.455	0.00336
1-1/8	0.655	0.00573
1-3/8	0.884	0.00875
1-5/8	1.14	0.0124
2-1/8	1.75	0.0215
12-5/8	2.48	0.0331
3-1/8	3.33	0.0473
3-5/8	4.29	0.064
4-1/8	5.38	0.0833