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The JPX 923 Hot Metal is Mizuno's cast, game improvement iron for players who want speed and forgiveness without paying forged prices. Mizuno makes its name on buttery forged blades, but this line goes a different direction. It uses a Chromoly cast body with a thin, flexible face to add ball speed, and it sells in big numbers because it works for a lot of mid and higher handicap golfers.
The 7-iron sits at 26 degrees, which is strong. That is the trade you make here. Mizuno delofted this set to chase distance, so your 7-iron flies more like a traditional 6-iron. The wide sole and hollow-body construction help get the ball up despite those stronger lofts, so most players still see a high, easy launch.
This is not a shotmaker's iron and it does not pretend to be. It is built to make solid contact feel rewarding and mishits stay playable. If you want more distance and a bigger margin for error on off-center strikes, this is one of the better cast options Mizuno has put out.
In short
The Mizuno JPX 923 Hot Metal (2023) is a forgiving game-improvement iron built for consistent distance. The set runs 5-iron to PW with a 26° 7-iron. It carries a $899 MSRP.
Last-gen value buy
The newer JPX 925 Hot Metal (2025) is already out, so the JPX 923 Hot Metal now sells at closeout pricing. If you do not need the very latest tech, this is the smart-money pick.
Based on release timing and this line's typical refresh cycle, not a live price quote.
Modeled from the $899 original MSRP and a 3-year-old release (about 33% of MSRP retained used).
Used market value
$250 - $330
Private sale, fair to like-new
Trade-in value
$150 - $230
What a shop typically pays
Get an exact quote
Estimate only, from a depreciation model, not a live quote. Search “Mizuno JPX 923 Hot Metal” on the sites above for the real number, which varies with condition, shaft, and demand.
The JPX 923 Hot Metal is the 5th of 6 generations Mizuno has released in this line, from the JPX 900 Hot Metal (2016) to the JPX 925 Hot Metal (2025). It followed the JPX 923 Hot Metal (2022) and came in held the same price. The JPX 925 Hot Metal (2025) replaced it.
| 5i | 6i | 7i | 8i | 9i | PW |
|---|---|---|---|---|---|
| 18.5° | 22.0° | 26.0° | 30.5° | 35.0° | 40.0° |
Stock steel shaft. Lofts are approximate and subject to manufacturing tolerances.
Typical carry by swing speed, adjusted for this set's actual lofts. Your numbers will vary with strike, shaft, and conditions.
| Club | Loft | Moderate swing~149y 7-iron | Average swing~164y 7-iron | Faster swing~178y 7-iron |
|---|---|---|---|---|
| 5-iron | 18.5° | 169 y | 186 y | 202 y |
| 6-iron | 22° | 160 y | 176 y | 191 y |
| 7-iron | 26° | 149 y | 164 y | 178 y |
| 8-iron | 30.5° | 139 y | 153 y | 166 y |
| 9-iron | 35° | 127 y | 140 y | 152 y |
| PW | 40° | 117 y | 129 y | 140 y |
Carry distances are modeled from TrackMan-based norms scaled to each club's loft, not measured for this exact model.
The build is a cast Chromoly body with a hollow-body core and a face insert designed to flex at impact. That flexing face is where the ball speed comes from, and the multi-material construction lets Mizuno keep weight low and toward the perimeter for stability. A wide sole helps the club glide through turf and moves the center of gravity down and back, which is what launches the ball high off those strong lofts. Comfort at impact matters on a cast iron, and Mizuno tuned the sound and feel here to stay closer to their forged feedback than most game improvement irons manage. It is not a forged blade, but it does not feel clicky or hollow the way some cast speed irons do.
The Mizuno JPX 923 Hot Metal's 7-iron is lofted at 26° - strong - notably stronger than the traditional 32-34° standard. For a golfer with an 85-95 mph swing speed, this projects to a 7-iron carry of approximately 164-174 yards. The 5-iron (18.5°) to 7-iron gap of 7.5° is spread across a wide range, which may create overlapping distance windows with similarly lofted fairway woods or hybrids. The pitching wedge at 40° is relatively strong - consider a gap wedge of 46-48° to bridge the distance to your sand wedge.
Mizuno strengthened the lofts across the set to add distance, so the 7-iron is 26 degrees where a traditional 7-iron might be 34 or 35. Your 7-iron will fly closer to what you expect from a 6-iron. The hollow body and wide sole are there to keep launch high even with the stronger loft, so most players do not lose height. Just know your gapping into the wedges will be different, and you may want to add a gap wedge since the set PW is 40 degrees.
No. This is a cast Chromoly iron, not a forged one. Mizuno's forged reputation comes from lines like the JPX Forged and the Pro series. The Hot Metal is cast so Mizuno can build a thin, fast, flexible face for more ball speed and forgiveness. Feel is softer than most cast speed irons, but it will not feel identical to a forged blade.
Very forgiving for its category. The hollow-body construction and perimeter weighting keep the face stable on off-center hits, so toe and heel strikes hold their line and distance better than they would on a players iron. The wide sole also helps if you tend to hit slightly behind the ball. This is a true game improvement iron built to protect mishits.
Better players who want to shape shots and control trajectory will find it too strong-lofted and too chunky in the topline and sole. If you are a low handicapper chasing precise distance control and workability, look at the JPX 923 Forged, Tour, or a Mizuno Pro model instead. The Hot Metal prioritizes speed and forgiveness over shotmaking.
The standard Hot Metal has a wider sole, thicker topline, and more offset, all of which make it launch higher and play more forgiving. The Hot Metal Pro is a more compact version with a thinner topline and less offset for better players who want the same speed in a cleaner-looking head. Lofts are similar between the two, so the main difference is the size and shape of the head and how much help it gives you.
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