Copper tubes for medicinal applications

Material Designation		Composition in % (m/m)			Density2 g/cm3 approx.
Symbol	Numerical	Element	Cu1	P
Cu-DHP	CW024A	min.	99,90	0,015	8,9
		max.	-	0,040
1 Including silver up to a maximum of 0.015%
2 Only for information.

Each tube must be capped, plugged or closed at both ends to keep the interior of the tube properly clean for handling and storage. The interior surface of the tube must be able to successfully pass carbon content testing. When lubricant residue is measured on the interior surface of the tube, it must not exceed 0.020 g/m2

OBJECTIVE AND FIELD OF APPLICATION

This norm specifies the requirements, sampling, test methods and conditions of supply for copper tubes. It is applicable to round copper tubes without welding which have an exterior diameter from 8 mm up to and including 54 mm, for piping systems used for the distribution of the following medicinal gases, intended for use at pressures up to 2000KPa, and for systems subjected to vacuums:

• oxygen, nitrous oxide, nitrogen, helium, carbon dioxide, xenon.
• air for breathing.
• specific mixtures of gases mentioned above.
• air for driving surgical tools
• anesthetic gases and vapors.
• vacuums.

 

Treatment State		Tensile Strength	Elongation	Hardness
				(indicative)
Designation in line with Norm EN 1173	Common Term	Rm	A	HV5
		MPa	%
		min.	min.
R220a	annealeda	220	40	(from 40 to 70)
R250	semi-hard	250	30	(from 75 to 100)
R290	hard	290	3	(min. 100)
NOTE 1 - The hardness figures in brackets are not requisites for this norm, but are given only for indicative purposes.
NOTE 2 - 1 MPa equivalent to 1N/mm2.
a Mechanical characteristics are only applicable to tubes with a wall thickness equal to or greater than 1 mm