Symbol

Unit

Description

Symbol

Unit

Description

AL

Absorption coefficient for laser radiation

tw

mm

Laser track width

cp

J∙kg1∙K−1

Specific heat capacity

vs

Mm∙min−1

Feed rate

df

µm

focus diameter

εS

J∙kg−1

Melting enthalpy

Pe

Peclet-number

εV

J∙kg−1

Evaporation enthalpy

PL

W

Laser power

κ

cm2∙s−1

Conductibility of temperature

T

K

Temperature

λth

W∙cm−1∙K−1

Thermal conductivity

TV

K

Evaporating temperature

ρ

Kg∙m−3

Density

td

mm

Laser track depth