武生特殊鋼材株式会社 日本語

V Gold 2 (VG2), V Gold 5 (VG5)

VG2 and VG5 stainless steel is recommended for thin blades. The main three reasons being:

1. VG2 and VG5 are made with refined low impurity raw material, they make a significant improvement in their mechanical properties (flexural strength ・ yield point ・ elongation ・ reduction of area ・ impact strength), and achieve both positive grindability and satisfactory hot forging easier.
2. Both grades have excellent qualities and structure required from stainless cutlery steel.
In addition to this the increased levels of C (chromium) and C(carbon) are higher than the more than common stainless steel grades. The eutectic carbide crystallization is suppressed, to make the hardness as high as possible with well-balanced element ratios, and a uniform structure of refined carbides.
3. Refinement during material processing.
Even though carefully selected steel ingots for the raw material with low impurities and segregation, it is impossible to eliminate them completely. Accordingly, the materials are refined at the hot rolling to diffuse segregation, and refine coarse grain structures. Heat treatment is used at various stages throughout the manufacturing process so that the steel has the optimum grain structure.

For the above reasons, VG2 and VG5 provide the most suitable hardenability, toughness, corrosion resistance, abrasion resistance and the other conditions.
Because VG5 has slightly higher Carbon, Molybdenum and Vanadium compared to VG2, please use VG2 for soft cutting, and VG5 is for a harder cutting application.

C Cr Mo V Hardness
VG2 0.60-0.70 13.00-15.00 0.10-0.20 HRC58≦
VG5 0.70-0.80 13.00-15.00 0.20-0.40 0.10-0.20 HRC59≦
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