Which concrete specifications do the makers publish?
Shun’s double-bevel edge guidance is 16° per side, compared with Wüsthof’s 14° per side for standard blades. Shun’s FAQ gives general VG10/VG-MAX hardness of 60–61 HRC, while the Wüsthof Classic 8-inch chef 1040100120 page specifies 58 HRC. The Classic page lists blade length and width, but no blade-thickness or knife-mass value; Shun’s FAQ supplies no model-matched thickness/weight pair. In this catalog, Victorinox Fibrox publishes 6.4 oz, while the opened Mercer and TOJIRO weight fields remain missing. These maker-specific records cannot establish that one national category is always thinner or lighter.
What do Japanese and German labels establish?
A label may describe a knife style, the steel’s description or the maker’s stated origin. Those are different fields. Mercer describes M22608 as using Japanese steel and M20608 as using German steel; those material descriptions alone do not identify where either finished knife was assembled. TOJIRO’s current Japanese page identifies the CLASSIC F-808 and its clad steel construction.
Which exact construction and edge details matter?
Read each maker’s material and construction fields before making a country-wide generalization. The Millennia M22608 is stamped, the Genesis M20608 is precision forged, and TOJIRO documents a VG10 core with stainless outer layers for CLASSIC. None of those labels supplies a common cutting test. Do not assume every Japanese knife is single-bevel, every German-labelled knife has the same steel, or either group has one universal sharpening angle.
How do care requirements affect the choice?
Use the exact maker’s care routine as part of the purchase decision. Mercer’s instructions require hand washing, prompt drying and storage in a block or sheath. Shun’s instructions also require drying before storage and restrict some cutting surfaces. Those are maker-specific instructions, not proof that one national category needs more care than the other.
What belongs on a useful shortlist?
Keep the model code, blade dimensions, handle, source date and unresolved handling questions together. Our chef comparison does this for four identified candidates and keeps prices in a separate feed-backed column. Missing weights and steel grades remain missing. Price, origin and construction can narrow further research, but they do not provide an independent performance score.
Sources and scope
- Mercer M22608: Japanese-steel wording; checked 2026-11-04.
- Mercer M20608: German-steel wording; checked 2026-11-04.
- TOJIRO CLASSIC: current Japanese maker specification; checked 2026-11-04.
- Shun care instructions; checked 2026-11-04.
- Shun FAQ: double-bevel angles and steel-specific hardness; checked 2026-11-04.
- Wüsthof Classic 1040100120: hardness and standard-blade angle; checked 2026-11-04.
- Victorinox Fibrox 5.2063.20: listed weight; checked 2026-11-04.
Maker specifications and instructions support this reference. Editorial choices are identified in the text. No hands-on test.