C71500 70/30 Copper Nickel Alloy Tube

C71500 CuNi30Mn1Fe Copper Nickel Tubes 70/30 is subject to the ASTM B111 standard. It is the best resistance of any copper alloy to impingement attack and corrosion from most acids and waters. It is being used in severe corrosive conditions in which service lives more prolonged than those of other copper alloys are desired.

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Copper Tubes (Purple Copper) - Detailed Technical Specifications
Common Copper Tube Grades and Classifications
UNS / ASTM Grade	Common Name	Standard	Key Characteristics
C11000	ETP (Electrolytic Tough-Pitch)	ASTM B88, B42	High conductivity (≥100% IACS annealed); Cu+Ag ≥ 99.90%; contains oxygen (≤0.04%); excellent electrical and thermal conductivity
C10200	OF (Oxygen-Free)	ASTM B88, B42	Cu ≥ 99.95%; exceptionally high purity; no oxygen embrittlement; highest conductivity
C12200	DHP (Phosphorus-Deoxidized)	ASTM B88, B42	Cu ≥ 99.85%; P 0.015-0.040%; excellent weldability; improved corrosion resistance; conductivity ~79-96% IACS
T2	Chinese Standard (GB/T 1527)	GB/T 1527-2017	Cu+Ag ≥ 99.90%; similar to C11000; contains trace impurities
TP2	Chinese Standard (GB/T 1527)	GB/T 1527-2017	Cu+Ag ≥ 99.90%; P 0.015-0.040%; phosphorus-deoxidized; strong deoxidation ability; excellent welding performance
Temper Designations for Copper Tubes
Temper Code	Description	Characteristics	Applicable Fittings
O	Soft / Annealed	Maximum ductility; lowest strength; excellent bending and flaring properties	Flared fittings; compression fittings; requires rounding and sizing for solder-type fittings
H	Drawn / Hard	Cold-drawn; higher strength; reduced ductility; limited bending capability	Solder-type fittings; certain types and sizes of compression fittings
Standard Copper Pipe Dimensions
Nominal Size (in)	Actual OD (in)	Wall Thickness (in)	Wall Thickness Tolerance (in)
0.625 (5/8)	0.625	0.040	0.0035
0.750 (3/4)	0.750	0.042	0.0035
0.875 (7/8)	0.875	0.045	0.004
1	1.125	0.050	0.004
1	1.375	0.055	0.0045
1	1.625	0.060	0.0045