What is Compact Grain Forging?
At TaylorMade, we go beyond the traditional to help golfers improve. It’s our obsession. With Compact Grain Forging™ in P·Series irons, including P·7MC, P·MB and the all-new P·7CB, we employ a 2,000-ton forging process to create the optimal grain structure. This allows us to form each iron blade with masterful precision and deliver consistent performance across the entire set with the best feel possible.
We use 2,000 tons of forging pressure, which is two to three times more than what’s commonly practiced in the golf industry. The additional force refines the microstructure and produces a tighter grain arrangement, delivering an iron that approaches theoretical perfection in terms of mass properties. What does that mean to the golfer? A forged iron with enhanced strength that provides the most solid and consistent feel possible. This six-step process includes a total of five forging strikes, which minimizes the need for hand polishing and creates repeatable, precise geometry in each iron head.
2,000-TON STRIKES
2,000 tons of pressure is hard to imagine. To put it in perspective, it’s the equivalent of (give or take):
- 800 SUVs
- 50 Semi Trucks
- 23 Jetliners
Forging pressure directly influences the grain structure and properties of metal. A heavier tonnage refines the microstructure and strengthens metal. The differences are illustrated below, with regions of various colors and shades representing constituents of the microstructure. The higher the tonnage, the finer the microstructure, and the stronger the metal.
THE SIX STEPS OF COMPACT GRAIN FORGING
At the scorching temperature of 1922° F, a block of iron called a billet is bent into an “L” shape. This inconspicuous chunk of raw material will ultimately become a polished work of art.
The initial forging strike creates excess material known as “flash” that envelops the clubhead after this first phase.
Then, the flash is removed prior to the second strike as the iron starts to take shape with visible detail, including the pronounced backbar, Metal T badge, and cavity.
As the name suggests, this is the first stage of precision craftsmanship. Increased pressure stamps out even greater detail, producing a small amount of flash in the process.
The full strength of a 2,000-ton haymaker hits home at this phase, as the final details begin to emerge. Higher forging pressures allow us to use lower temperatures. This gives us more control over the microstructure and minimizes grain growth so that we’re able to precisely control the mass of the head when forging in the final details.
Our fifth and final forging strike locks in the ultimate aesthetics. This fifth stamp, which is one more than the industry standard, produces a head shape that’s near done and requires minimal hand polishing for a repeatable, precise geometry.
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