What we carry in 7Cr17MoV and 440A
For a buyer who ranks rust resistance above edge life, 7Cr17MoV and 440A deliver nearly the same thing. Both pair about 0.60 to 0.75 percent carbon with chromium in the 16 to 18 percent range, both resist corrosion very well, and both give up edge retention to do it. 440A carries the higher corrosion rating on paper, one step above 7Cr17MoV, whose own record calls the two roughly comparable.
| 7Cr17MoV | 440A |
|---|---|
| Type | |
| stainless (Chinese GB standard) | stainless |
| Made by | |
| Generic Chinese mill grade (not a single proprietary producer). | Generic AISI grade. |
| Composition | |
C 0.60-0.75%Cr ~17%Mo ~0.75% | C ~0.60-0.75%Cr ~16-18%Mo up to ~0.75% |
| Hardness | |
| 55-59 typical factory ship hardness (spec ceiling ~60-63 with optimal heat treat) HRC | 55-58 HRC |
| Edge retention | |
| Modest, a budget steel; holds an edge less long than D2/AUS-8/8Cr13MoV tier. | Fair, the weakest edge-holder of the 440 family. |
| Toughness | |
| Reasonable for a budget stainless when not over-hardened. | Good. |
| Corrosion resistance | |
| Very good, high chromium content, roughly comparable to 440A. | Excellent, highest corrosion resistance of the 440 family (lowest carbon, most free chromium). |
| Where it sits | |
| Entry-level/budget; commonly described as a rough analog of AISI 440A. | Entry tier of the 440 stainless family. |
| On this site right now | |
| 85 listings, 48 distinct models, $10.49 to $92.99 | 12 listings, 11 distinct models, $13.49 to $80.99 |
If the knife you are shopping for will live somewhere damp, the good news on a budget spec sheet is that 7Cr17MoV and 440A both put corrosion resistance ahead of everything else. Each keeps its carbon low for a stainless, about 0.60 to 0.75 percent, and that leaves more chromium dissolved in the steel where it can protect the surface.
The records differ by one word. 440A is rated excellent, and its record credits it with the highest corrosion resistance in the 440 family. 7Cr17MoV is rated very good, and its own record describes it as roughly comparable to 440A. So if rust is the whole decision, 440A holds the stronger rating and 7Cr17MoV gives up little against it. Neither is rustproof. A blade closed wet or carried home in a salty boat bag will still mark if nobody rinses and dries it.
The practical upshot: a 7Cr17MoV knife is not a rust risk dressed up as a stainless. For a spare, a camp box knife or a knife that rides near water, either label is a sound corrosion choice.
Both 7Cr17MoV and 440A buy their corrosion resistance with edge life, and both records say so plainly. 440A is rated fair, the weakest edge holder in the 440 family. 7Cr17MoV is rated modest, holding an edge for less time than the D2, AUS-8 and 8Cr13MoV tier. The two ratings are written against different neighbors, and neither record ranks the 7Cr17MoV edge against the 440A edge, so treat them as the same kind of trade rather than a contest. Expect to touch either one up more often than a mid tier steel.
Hardness overlaps almost completely. 440A is published at 55 to 58 HRC. 7Cr17MoV typically ships at 55 to 59 HRC. Its spec ceiling, about 60 to 63, applies under an optimal heat treat, which is above where the record says factories typically ship it. Those are ranges for the alloys. Knives Now does not test the heat treat of individual knives, so no listing is being claimed at any point inside them.
Toughness is the row worth reading closely. 440A is rated good. 7Cr17MoV is rated reasonable for a budget stainless, with a condition attached: when it is not over-hardened. The record does not say where over-hardened begins, so read the rating as conditional rather than as a floor.
The 7Cr17MoV and 440A labels are close. The shelves are not. This site lists 85 7Cr17MoV listings across 48 distinct models, against 12 440A listings across 11 models. That means 37 of the 7Cr17MoV listings repeat a model already counted, in another color or finish, while nearly every 440A listing is its own knife.
Price is the other gap. 7Cr17MoV runs $10.49 to $92.99 with a median of $24.12, and 15 of its listings sit in Closeouts. 440A runs $13.49 to $80.99 with a median of $53.96. Brands differ too: Gerber, Buck and Kershaw make up the 7Cr17MoV shelf, with Gerber alone at 59 listings, while 440A is Böker Magnum and Gerber. Gerber is the brand on both. None of the 97 listings across the two steels is marked made in the USA.
At similar money the two steels turn up on similar knives. The Buck Trace Linerlock Blue at $53.76 has a 3.25 inch stonewashed, partially serrated 7Cr17MoV drop point on a skeletonized aluminum handle. The Böker Magnum Iguanodon Linerlock at $61.16 has a 3.13 inch black stonewashed 440A blade on sculpted G10. At that level you are choosing a handle and a shape, not a steel.
Read 7Cr17MoV on a budget knife as the Chinese GB grade that references describe as a rough analog of 440A, and shop accordingly:
If long edge life matters more than rust margin, the answer is up the carbon ladder rather than sideways between these two. The comparison of 440A with the higher carbon 440C shows what extra carbon adds at the edge and costs at the surface. For every other grade, the Steel Lab lays out where each one sits.
The figures on this page are the published specification ranges for the alloy, cross-checked against manufacturer datasheets and independent metallurgical references. They describe the steel, not any one knife. Hardness in particular is a range a mill and a knifemaker work inside, and Knives Now does not test the heat treat of individual knives, so nothing here is a claim about what a specific listing measures.
Cross-checked against the sources above. Figures verified 2026-07-19.
