ZWILLING Professional S 8 in Chef's Knife (31021-203)
By ZWILLING · Kitchen Knives · Kitchen & Cooking
- Special-formula steel, forged, blade hardness 55-58 HRC
- Blade length 7.87 in, blade thickness 0.08 in
- Net weight 0.55 lb, overall length 13.19 in
- Full bolster, exposed tang, plastic handle, made in Germany
Lowest price seen
$169.95
from $169.95 at Cutlery and More · Checked Oct 15, 2026
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Summary
A German-forged 8-inch chef’s knife with a straight full bolster and three-rivet polymer handle, suited to cooks who want a heavy Western workhorse that sharpens easily. Hand wash it: ZWILLING’s own care manual recommends against dishwasher use despite the product page wording.
Strengths
- Forged full-tang construction with a straight full bolster that acts as a finger guard.
- FRIODUR ice-hardened steel that owners report sharpens easily and holds a working edge with steeling.
- Passed heel-to-tip paper and tomato cutting in independent family testing.
- Long service life in owner threads, including a 23-year set owners report still in use.
- US warranty replaces defective knives with proof of purchase and no repair wait.
Weaknesses
- Heavy in the hand and needs wrist strength during long prep in independent testing.
- Thick behind the edge with a bulky handle that some owners find uncomfortable.
- Edge durability drew criticism in one independent review and in owner threads on softer steel.
- Full bolster can make sharpening harder, as owners who prefer it still note.
- Hand wash only in practice, since the maker manual recommends against dishwasher use despite page wording.
Verified specifications
| Item | 31021-203, ZWILLING Professional S 8-inch Chef’s Knife. |
|---|---|
| Origin | Germany. |
| Steel | special-formula high-carbon stainless steel. |
| Construction | precision-forged from a single piece of steel with SIGMAFORGE process. |
| Hardening | FRIODUR ice-hardened. |
| Hardness | 55-58 HRC. |
| Edge | fine edge with V-edge finish. |
| Edge angle | 15 degrees per side, 30 degrees total. |
| Blade length | 7.87 in. |
| Handle | plastic polymer with matte black finish, three rivets and exposed tang. |
| Bolster | full and straight. |
| Dimensions | 13.19 in length, 1.93 in width, 0.79 in height, 5.28 in handle, 0.08 in blade thickness, 0.55 lb weight. |
| EU line sheet | 235 g weight, 2.5 mm blade thickness, 4.6 cm blade height, 11.8 cm handle, 33.3 cm length. |
| Care | hand washing recommended, with maker manual recommending against dishwasher use. |
| Warranty (US) | ownership-length coverage for initial purchaser with proof of purchase, replacement only with no repair service, replacement in 7-14 business days. |
Full research notes and sources
Sources
Manufacturer:
- ZWILLING — Professional S user manual
- ZWILLING US — Professional S 8-inch Chef’s Knife 31021-203
- ZWILLING US — Limited Warranty
- ZWILLING US — Knife use and care guide
- ZWILLING UK — Sharpening guide
- ZWILLING Canada — Professional S 8-inch Chef’s Knife 31021-201
Independent reviews:
- BBC Good Food — Zwilling pro chef’s knife review
- Knives and Tools — Professional S cook’s knife spec sheet
Owner reports:
