Alloy 165 (C17000) TF00 Tube – High Strength, Low Beryllium, Near‑Unity Magnetic Permeability

Alloy 165 Tube from Materion Brush Performance Alloys provides strength close to that of Alloy 25, with slightly lower beryllium content. Alloy 165 features high fatigue strength and magnetic permeability approaching unity.

Properties

General

Property	Temperature	Value
Density	23.0 °C	8.41 g/cm³

Dimension

Property	Value
Outside diameter	19.1 - 406 mm

Mechanical

Property	Temperature	Value
Elastic modulus	23.0 °C	131 GPa
Elongation	23.0 °C	3 - 10 %
Tensile strength	23.0 °C	1030 - 1310 MPa
Yield strength Rp0.2	23.0 °C	860 - 1070 MPa

Thermal

Property	Temperature	Value
Coefficient of thermal expansion	23.0 °C	1.75E-5 1/K
Melting point		870 °C
Thermal conductivity	23.0 °C	105 W/(m·K)

Electrical

Property	Temperature	Value
Electrical resistivity	23.0 °C	5.8E-6 - 6.9E-6 Ω·m
Specific Electrical conductivity		25 - 30 % IACS

Magnetic

Property	Temperature	Value	Comment
Relative magnetic permeability	23.0 °C	1 [-]	max.

Chemical properties

Property	Value	Comment
Beryllium	1.6 - 1.85 %
Cobalt	0.2 %	min. Nickel + Cobalt
Copper	Balance
Iron	0.6 %	max., Nickel + Cobalt + Iron
Nickel	0.2 %	min. Nickel + Cobalt

Technological properties

Property
Application areas	Alloy 165 tube is used in crucial telecommunications applications including undersea instrument housings and repeater housings.

Alloy 165 (C17000) TD04 Tube – High Fatigue Strength & Low Beryllium for Peak Performance Alloy 165 TH04 Tube – High Strength, Low Beryllium Alloy

Metal