Epon AF-306 Irons Specifications
Full factory loft, lie and length chart for the Epon AF-306 irons, 2022–2025.
- Years produced
- 2022–2025
- Category
- Players Irons
- Construction
- forged (one-piece S20C billet with forged-in tungsten toe weight)
- Material
- S20C soft carbon steel with tungsten inner weight
- Set makeup
- 4–PW
Loft, lie & length chart
| Club | Loft (°) | Lie (°) | Length (in) | Offset (in) |
|---|---|---|---|---|
| 4 | 23 | 60.5 | 38.25 | 0.138 |
| 5 | 26 | 61 | 37.75 | 0.13 |
| 6 | 29 | 61.5 | 37.25 | 0.122 |
| 7 | 32 | 62 | 36.75 | 0.114 |
| 8 | 36 | 62.5 | 36.25 | 0.106 |
| 9 | 41 | 63 | 35.75 | 0.098 |
| PW | 46 | 63.5 | 35.25 | 0.087 |
Lofts and lies are the factory standard build. Individual clubs may differ if they have been bent, re-shafted or re-gripped during their life.
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Loft progression
About the Epon AF-306
The AF-306 is Epon's compact deep-cavity players iron, released on 26 March 2022 to mark the 45th anniversary of the Epon golf brand. Epon is the house label of Endo Manufacturing in Tsubame, Niigata, and the head is forged as one piece from S20C soft carbon steel with a tungsten weight forged into the toe side - 33 percent more tungsten than the preceding AF-305, with a 10 percent narrower sole and a fractionally shorter head. Lofts are traditional for the category, with a 32-degree 7-iron and 46-degree pitching wedge. Epon sells heads through its Niigata direct store and authorized fitters, built to order with no fixed stock shaft; the lengths below are the standard steel assembly lengths from the Japanese retail spec chart, and offsets are converted from Epon's published gooseneck figures in millimetres.
Related models
Frequently asked questions
What is the loft of an Epon AF-306 7-iron?
The Epon AF-306 7-iron has a loft of 32 degrees, with a 62-degree lie and a 36.75-inch standard steel length.
Who makes Epon AF-306 irons?
Epon is the house brand of Endo Manufacturing in Tsubame, Niigata, Japan - a forging house that has also made heads for many major OEMs. The AF-306 is forged in-house from S20C carbon steel with a tungsten weight forged into the toe.
Is the Epon AF-306 a blade?
No. It is a compact deep-cavity players iron. The one-piece forging carries a tungsten inner weight on the toe side to raise the moment of inertia while keeping a compact, minimal-offset profile.
Finding a used set
The Epon AF-306 ran from 2022 to 2025 and is no longer in production, so the used market is the only source. Search the used listings on eBay, and check the loft and lie against the chart above before buying — sets this age have often been bent from standard.
- epongolf.co.jp news release 'EPON AF-306 アイアンを新発売' (2022.03.26) — fixes the release date, 45th-anniversary positioning, 33% tungsten increase over the AF-305 and the compact deep-cavity design
- one2one.jp Epon AF-306 product listing (Japanese custom-club dealer) — loft/lie/gooseneck/head-weight table: lofts 23/26/29/32/36/41/46, lies 60.5-63.5, gooseneck 3.5 down to 2.2 mm, head weights 252.5-294 g; 6-piece set standard with singles by special order
- g-one-golf.com (ジーワンゴルフ) Epon AF-306 custom order page — same loft/lie/offset ladder plus standard assembly lengths, steel 38.25 to 35.25 inches (carbon +0.25); this page lists the 7-iron loft as 33°, an outlier against 32° on one2one and mycaddie, so 32° is used here
- mycaddie.jp product 11728 — S20C head material, 32°/62° 7-iron, April 2022 retail date, corroborating the spec ladder
- Status check, 29 September 2026: year_discontinued is 2025. Epon announced the AF-307 on 31 January 2025, on sale from 21 February 2025 (epongolf.co.jp).
Last updated 29 September 2026. Spot an error? info@loftchart.com