C99® H12 – CuPb1P (C18700): High-Performance Machinable Copper Alloy

Connectivity and free-machining alloy.

Machinable copper with very high electrical conductivity. C99® is part of Lebronze alloys’ large offer of machinable high performance alloys for connector applications, along with C97® and C98®.

Properties

General

Property	Temperature	Value
Density	23.0 °C	8.3 g/cm³

Dimension

Property	Value
Dimensions	Available size round products (mm): 1-20

Mechanical

Property	Temperature	Value
Elastic modulus	23.0 °C	115 GPa
Elongation	23.0 °C	15 %
Hardness, Brinell	23.0 °C	90 [-]
Hardness, Rockwell C	23.0 °C	0 [-]
Hardness, Vickers	23.0 °C	100 [-]
Tensile strength	23.0 °C	290 MPa
Yield strength	23.0 °C	240 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	1.7E-5 1/K	for 20-200°C
Thermal conductivity	23.0 °C	380 W/(m·K)	for 20-200°C

Electrical

Property	Temperature	Value
Electrical conductivity	23.0 °C	4.90E+7 S/m

Technological properties

Property
Application areas	Summary of typical applications: Electrical and electronic contacts, screws, for high performance relaxation
Corrosion properties	Corrosion resistance rating: 3 out of 5
General machinability	Machinability: 60 %
Processing history	Condition: H12

C99® O – High-Performance Machinable Copper Alloy (CuPb1P) – Ideal for Connector Applications C99® H14 CuPb1P (C18700): High-Performance Machinable Copper Alloy

Metal