The Republican. [volume] (Oakland, Md.) 1877-current, 1926-11-25

ing properties of the heat treated al
10y steels in their vital parts.
Avoiding the scientific and techni-
cal terms of the metallurgist and
engineer, he explained to the auto
mobile owner and buyer why the al
10y steels are used for the vital parts
of the good motor car or truck.
There are two fundamental re-
quirements to long life in motor cars,
this expert brought out:
First, the steel selected for
given part must have the proper
composition or chemical analysis for
that part. Second, it must be properly
heat treated to develop the correct
degree of hardness, strength and
shock resisting ability.
"Of these two desired qualities the
most important to safety is ability to
resist shock, and it is in this charac-
teristic that the proper alloy steel is
so far superior to any carbon steel.
Correct composition and correct
heat treatment play the same part in
the production of the vital parts of
an automobile that the proper pro-
portioning of ingredients, proper
mixing and proper baking play in the
making of bread, rolls and pastry.
st is no more possible to make
from cheap carbon steel a steering
knuckle, steering connection, axle
shaft or exhaust valve that possesses
maximum safety and endurance than
it is to make fine pies, cake and past
ry from ordinary bread dough. The
success of both the metallurgist and
the pastry cook depends upon exact
control of the baking as much as up
on the materials.
"The alloy steel bar as it comes
from the giant hammers, the green
gear or other alloy steel part which
has just been machined, does not
possess these two essential character
istics any more than if made of cheap
carbon steel"
At the request of Mr.. J. P. Treacy,
local dealer, Dodge Brothers engin-
eering department has supplied some
interesting information regarding the
amount of alloy steel used in their
motor cars.
According to these figures"
states Mr.. Treacy, ''over 465 pounds
of costly chrome vandium steel are
purchased for making the vital parts
of each Dodge Brothers chassis. The
other forgings in each chassis re-
quires less than IT'S pounds of open
hearth carbon steel.
"Now Dodge Brothers are using a
larger weight of chrome vanadium
steel in each chassis than they did a
year ago and much larger weight
of this fine costly alloy steel than was
used in the Dodge Brothers car which
won such good name in the military
service during the World War.
"The front axle I-beam, steering
knuckles, steering arms and connect
ions, propeller shaft, drive pinion and
ring gear, rear axle shafts, crank
shafts, cramshaft and many other
parts are all heavier that they were
in 1917 and are all made of the finest
chrome vandamium steel and are all
scientifically heat treated in the fin
est electric furnaces in the industry.
''For example, a 72-pound piece is
cut from a three-inch bar of chrome
vanadium steel for forging the pres
ent crankshaft-a year ago only a
51-pound piece was required.
Each axle shaft in Dodge Broth
ers Motor Car Of 1917 was made
from ten-pound bar. For forging
the axle shaft of today a specially
rolled chrome vanadium steel bar
weighing over II pounds is used A
Dodge Brothers front spring in 1917
weighed 20 pounds. The front spring
today weighs over % pounds and, as
has always been Dodge Brothers
practice, every leaf Of every spring is
of chrome vanadium steel.
Significant in that it accounts for
the unusual endurance and long life
of Dodge Brothers motor car" Mr..
Treacy continued, "is the fact that
pound for pound Dodge Brothers
chassis contains large proportion of