1030 Carbon Steel: A softer form of steel typically used in iron forgings. It is more malleable than other stainless steels used in golf clubs making it easier to hand work during forging. 8620 is another common example of carbon steel.
15-5 Stainless: A stronger lighter alloy of stainless as compared to 17-4 stainless. 15-5 is commonly used in thinner-walled fairway and hybrid clubs. It is composed of 75% iron, 5% nickel and 15% Chromium.
17-4 Stainless Steel: A type of stainless steel used in iron head and all metal wood head construction. In composition, 17-4 is no more than 0.07% carbon, between 15 and 17% chromium, 4% nickel, 2.75% copper, and 75% iron and trace elements.
18-8 Stainless Steel: A type of stainless steel sometimes used in the manufacture of iron and putter heads. Its composition is no more than 0.08% carbon, 18-20% chromium, 8-11% nickel, with the remainder being iron and a few trace elements. As 18-8 cannot be treated to make it harder, it is best used only on non-offset iron heads with thicker hosels.
431 Stainless Steel: A type of stainless steel used in iron and putter head construction. In composition, it is not more than 20% carbon, 15-17% chromium, and 1.25-2.5% nickel, with the remainder being iron and a few trace elements.
6-4 Titanium: A grade of titanium used in wood head manufacture. Its technical formula is 6Al-4V, indicating that its composition is 90% titanium, 6% aluminum and 4% vanadium. Its high strength to weight ratio allows it to be used to effectively for thin-walled face inserts.
Alloy: Any combination of metals used to produce a club head or shaft. Alloys may contain aluminum, steel, beryllium, nickel, copper, titanium, or any number of other metals in varying combinations.
Aluminum Wood Head: A type of metal wood head constructed primarily from aluminum alloys through a die casting process. Aluminum woods are generally utilized by beginning players due to their lower price. They typically are not as durable as stainless steel woods. They may also be known as aluminum alloy heads.
Beryllium Copper (BeCu): An alloy used at one time to produce club heads, typically irons and wedges. The alloy is denser than stainless steel and is claimed to provide a softer feel by some players. Beryllium heads are easily identified by their copper coloration.
Beta-Titanium: An alloy of Titanium that is stronger and lighter than typical titanium allowing the walls of the head to be made thinner due to the higher strength of beta-titanium.
BiMatrx? A shaft made by True Temper comprised of a graphite body and steel tip section.
Bi-Metal: A club head constructed from two different materials. A common example is a stainless steel club head with a brass sole insert or brass sole rails.
Chrome Plated Finish: Type of finish electrostatically applied to forged or cast carbon steel irons and identified by its high lustrous appearance.
Die-Cast: Process of club head production (primarily used with zinc or aluminum) in which heads are formed through the injection of material into a pre-formed die. This process is generally used on lower-priced heads.
Forged Titanium: A method of wood head manufacture in which the body and sole of the head is formed (forged) from 100% (pure) titanium. The face and hosels of such woods are typically produced from 6-4 titanium. Forged titanium woods are less costly due to their ease of forming as well as their lower raw material cost.
Hybrid: Generic term given to any club designed from characteristics of a wood and an iron.
Laminated Wood: A wood head manufactured by gluing together and compressing several thin pieces of maple, which is then forming them into the shape of a golf club head.
Maraging Steel: An alloy or family of steels with unique properties. Typically maraging steels are harder than are non-maraging steels such as 17-4 and 15-5. Maraging steel is commonly used in club face applications, rather than in entire club heads.
Medallion: Any number of decorative inlays made of metal, Mylar and urethane type units which are affixed commonly in the cavities of woods or putters, but may also appear on metal woods. The units are designed for cosmetic purposes, enhancing the attractiveness of the club heads.
Persimmon : A material with which to manufacture wooden woods. Woods made from persimmon are made from one solid block of wood. Persimmon woods, while once very popular in the 1960's, have lost favor to metal woods. Persimmon woods are considered to be the "best" type of wooden woods produced and demand a premium price as a result. Persimmon is still being manufactured today, most notably by Louisville Golf in Louisville , Kentucky .
Ti-Alloy: A metallic alloy used for wood heads that contains some titanium. Typically Ti-alloy heads are comprised mostly of aluminum and are considered to be of lesser quality than other head materials.
Titanium: Club head material utilized primarily for woods and irons, it has a higher strength-to-weight ratio than most steel alloys. See also Beta-Titanium, Forged Titanium and 6-4 Titanium. Titanium can also used in shaft production.
Tungsten: A high-density metallic compound used to add weight to a club head, either as a swingweighting material in the shaft or as a defined weight attached somewhere in/on the head.
Zinc Iron Heads: Iron heads die cast from an alloy of zinc. These heads typically are considered less expensive and less durable than their stainless counterparts and thus are designated primarily for beginner sets. Zinc heads can be identified by their non-magnetic properties as well as by their typically larger diameter than normal hosels..
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