EN 13348 Seamless Round Copper Tubes For Medical Gases Or Vacuum

Overview

Engineering reference data for EN 13348 Seamless Round Copper Tubes For Medical Gases Or Vacuum in gases and compressed air.

Key Formulas

Ideal Gas Law

$PV = nRT$

Pressure × Volume = moles × gas constant × temperature.

Boyle's Law

$P_1 V_1 = P_2 V_2$

At constant temperature.

Charles's Law

$\frac{V_1}{T_1} = \frac{V_2}{T_2}$

At constant pressure.

Variables

Symbol	Description	Unit
$P$	Pressure	Pa
$V$	Volume	m³
$T$	Temperature	K
$R$	Gas constant	8.314 J/(mol·K)

Typical Available Dimensions

Material Tempers & Properties

The mechanical properties of the tube are specified by its material temper designation (e.g., R250, R290).

• R250 (Half Hard): Minimum tensile strength of 250 MPa, minimum elongation of 30% (or 20% for certain conditions), and a Vickers hardness of 75-100 HV5.
• R290 (Hard): Minimum tensile strength of 290 MPa, minimum elongation of 3%, and a Vickers hardness over 100 HV5.

The designation follows the format Copper tube EN 13348 [Temper] [Diameter]x[Wall], for example: *Copper tube EN 13348 R290 15×1.0.

Property Designation Symbols (EN 1173)

The letter symbols used in property designations are defined as follows:

Symbol	Property Definition
A	Elongation
B	Spring bending limit
G	Grain size
H	Hardness (Brinell for castings, Vickers for wrought products)
M	(as) Manufactured, i.e., without specified mechanical properties
R	Tensile strength (e.g., R250 = 250 MPa)
Y	0.2% proof strength

Interactive Charts

References

• Original Source