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G2, aka GIN-1. A Hitachi-made low cost stainless steel comparable to, but slightly softer than, AUS-8. Generally hardened in the mid to high Rc 50s. A tough, corrosion-resistant steel. Used considerably less by manufacturers recently, compared to years past. Taken from the forums and reprinted with kind permission from author [1]

Sal Glesser posted on in 2009:

"Gingami I is a steel that was made by Hitachi. When we first began making knives (1981), Gin I was the best available production knife steel. (and the most excpensive). ATS-34 was available, but still difficult to get and use in production. It's a very nice blend of alloys and produces a tough steel with very good edge holding and very good corrosion resistance. We've recently considered using the steel in low cost models. Hitachi is no longer making the steel at this time." [2]

GIN-1/G-2 consists of:

Carbon Chromium Cobalt Copper Manganese Molybdenium Nickel Nitrogen Phosphorus Silicon Sulfur Tungsten Vanadium
0.90 15.50 / / 0.60 0.30 / / 0.02 0.37 0.03 / /