Golf Club Heads: Material Differences

Golfers have many options available to themcast irons can be made from either 431 or 17-4
regarding club head materials. To a newcomer togrades. The 17-4 is slightly harder of the two. This
the game this can also be confusing on why oneallows the 431 to be adjusted for loft or lie a little
would select one material over another. So, let usmore easily, but other than that, there is no one
explain the difference in the materials and whygreater advantage of one verses the other.
they might be used for the various golf clubs.Specialty Stainless Steel (Maraging Steel)
TitaniumAnother more recent addition to the number of
The use of titanium for golf clubs came from thematerials used in golf club head manufacturing is
technology used in the aerospace industry. Themaraging steel, which is an alloy or family of steel
first golf clubs made from titanium date back towith unique properties. Typically maraging steels
the early 1990's and quickly became theare harder than non-maraging steels like 431 or
materialof choice for driver heads due to the high17-4 and used primarily for face inserts rather
strength-to-weight ratio. Titanium is lighter thanthan the whole head. A driver head can be
stainless steel and allows the designer toproduced wholly from maraging steel, but there is
manufacturer a much larger club head that meetsstill a limit on the size of the head (roughly in the
the weight specifications of a normal driver. Thelow-300cc range). Plus the cost of the head would
strength of the material has increased durabilitynot be that much less expensive than one made
for even the strongest golfers in the world.from titanium.
There are many different titanium alloysSince the maraging steels are harder, the face
(materials added to the raw titanium) to changeinsert can be made thinner than the normal
both the weightand strengths requirements. Withstainless steel graded used in golf. As a result, the
driver heads reaching the maximum volume ofball coming off the face will have a slightly high ball
460 cubic centimeters, the most common alloy isvelocity upon impact. Maraging steels are more
6/4 Titanium, by which 90% of the material isexpensive to produce, therefore would be more
titanium, 6% is aluminum and 4% is vanadium.in the premium price range, which is the trade-off
There are many other alloys or grades offor the higher performance.
titanium (sometimes called Beta Titanium) such asAluminum
15-3-3-3, SP700, 10-2-3, etc. available to the clubAluminum is a much lighter material than stainless
designer. If the higher grade of titanium is used,steel. Early metal woods made from aluminum
then it is normally for the face material only andback in 1970's and 80's were not very strong or
not the entire head.durable. This caused these low cost club heads to
The United States Golf Association (USGA) andgain a bad reputation for easily scratching and
the Royal and Ancient Golf Club of St. Andrewsdenting that still carries over today. However, the
(R&A) - the two governing bodies in golf -aluminum alloys today are much better than those
established rules for how fast a ball can come offused in the past and the head sized can be made
of the club face of a driver. Most manufacturersto the maximum size for drivers (460cc) under
make drivers that go to this limit withoutthe Rules of Golf.
exceeding it, so there really is no advantage ofHeads manufactured from aluminum are much
one material over another. Typically, smallerlower in cost than even stainless steel, which
drivers (under 400cc) would utilize the higher costmakes these clubs more affordable and ideal in
beta titanium to increase how fast the ball comeswoods of starter sets or junior sets. The only
off the face. But with clubs in the 460cc range,downside to the aluminum is that the walls have
standard 6/4 titanium will be sufficient material forto be made thicker as not to crack or cave in.
the maximum allowable ball speed.Therefore the ball speed coming off the face
Titanium can also be used in other clubs, butwould be less than a comparable titanium driver.
normally you do not see it much for a couple ofCarbon Graphite
reasons. First, titanium is much more expensiveCarbon graphite is an extremely lightweight
than stainless steel used in fairway woods, hybridsmaterial and can be used to create a wood
and irons. Second, the reason for titanium is for(usually with some sort of metallic soleplate for
the strength and lightweight nature. If a fairwaydurability and additional weight). Few clubs today
wood was made with titanium, it would normallyare produced primarily from carbon graphite;
be made much larger in size to achieve a normalhowever there are a number that incorporate the
weight. By doing so, the head becomes muchcarbon graphite material in the design.
taller and makes it effectively harder to hit off ofCarbon graphite is less dense than any other
the fairway. The same can be said for titaniummaterial used in golf and a perfect choice to
irons. However, you will see some irons with areplace the top shell (or crown or top of the
titanium insert as a way of increasing the ballhead). The weight savings from incorporating the
speed at impact verses an all stainless steelcarbon graphite in the crown, allows additional
clubhead.weight to be repositioned elsewhere in the heads
Stainless Steelin order to improve the design. Heads made from
Stainless steel is the most used material in golf.or partially from carbon graphite demand a
The material is generally inexpensive and easy topremium price and can be found, not only in
cast into all the shapes that you see golf clubsdrivers, but fairway woods and hybrids as well.
made plus durable enough for everydaySome of which are intentionally un-chromed to
play.There are two main types of stainless steelrust through normal use. The idea behind the
used in golf club heads. One is 17-4 stainless steelunplated carbon steel wedges is softer feel and
(comprising of no more than 0.07% carbon,supposable greater spin. Iirons, wedges and
between 15 an 17% chromium, 4% nickel, 2.75%putters produced from carbon steel will be more
copper, and 75% iron and trace elements). 17-4expensive than stainless steel.
used primarily for metal woods, hybrids and someZinc
irons. The other type of stainless steel is 431Heads produced from zinc are the least
(comprising of no more than 20% carbon, 15-17%expensive of all the materials. Used mostly for
chromium, 1.25 - 2.5% nickel, and the remainderirons, wedges and putters in both starter sets
being iron and a few trace elements). This gradeand junior sets, zinc heads are less durable than
of stainless steel is used for irons and putters.their stainless steel counterparts. Zinc heads can
The majority of fairway woods today arebe identified by their non-magnetic properties and
manufactured from 17-4 stainless steel. Driverstheir larger-than-normal hosel diameters.
can also be made of 17-4, but due to the highWood
density of the material, the limit on size isWooden woods are rarely found as a club head
approximately 250cc without the risk of crackingmaterial option anymore as it has lost favor
during normal play. Because golfers prefer larger,amongst golfers to titanium drivers and stainless
easier-to-hit drivers, few drivers today are evenfairway woods.
manufactured from stainless steel Investment