VG10 vs S35vn corrosion resistance?

XtianAus

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Hey
I have a duke vanguard in VG10 steel and it keeps rusting even when it has limited usage and usually sits in a draw at home (I have folders I like much more). Im not sure why it is rusting up so easily.

VG10 has 15% chromium so i'd expect the corrosion resistance to be pretty stellar especially when it does not come into contact with water. But my experience have not matched my expectations.

I'm looking at purchasing a knife in S35vn at 59-60Rc and wondering what experiences you guys have with it in terms of corrosion resistance?
S35vn has 1% less chromium but I am hoping somehow it is more corrosion resistant...
 
What are you cutting with them and are you cleaning it off before storing it? Is it unusually humid or something where you store it? Do other knives rust where you store it?

I ask these only because VG10 is supposed to be pretty decent in the corrosion resistant department, I'm not had issues with it even sweating all over it while working and hiking. Same with S30V/S35VN (very, very similar).

It's to the point I'm curious if it's even the correct steel, something isn't adding up.

From bladeHQ https://www.bladehq.com/cat--Steel-Types--332
"VG 10 Steel - This is another type of steel that gets referred to as super steel. It is a very high end stainless steel. It has vanadium which gives it extra toughness. This steel holds an edge really well. It is also very rust resistant. It has a carbon content of 0.95-1.05%."

You can find similar descriptions in regards to it's rust resistance on many websites.
 
I agree, Vg10 is suppose to be great in rust resistamt department. I am very confused with my experience. Last time I used it, it was for cutting/eating with. I cleaned it after use. I did not oil it however.

It is stored in my bedroom in a draw. I live in Australia and it is hot and humid here now, but not unusually so. In the same draw I have 2 fixed blades, one in 3V and one in M390. Neither are experiencing any rust.

Thanks for checking in bikerector.

- Christian
 
That blade hq description of vg10 is hilarious.

I've had S30V rust while swimming in a pool at a water park but hey that is a corrosive environment. I've also seen my old delica in vg10 show a few rust spots that generally rubbed off. Keep in mind, most stain less steels are exactly that, stain less steels. That said, not all stainless steels are equal in corrosion resistance. Elmax and M390 are a few extremely corrosion resistant stainless steels. Than there is H1 which is for all intents and purposes rust proof.

But vg10 rusting in a drawer doesn't sound right. Unless you live on an island and the drawer is outside.

Heat treat absolutely effects corrosion resistance, could be a botched heat treat.
 
Haha definitely not on an island and definitely stored inside.
I wouldnt have even seen it if it wern't for my girlfriend. I had her holding a few knives and asking her which she liked best, which she thought was most and least expensive etc etc and she said she thought the duke was the cheapest because of the rust...and thats when it was brought to my attention.

Otherwise I wouldnt have seen it, as I simply overlooked it expecting it to definitely not be there on a knife with such limited use.
It's a mystery how it formed in the environment (or lack of) it is in.
 
Of the knives in your drawer it 3V is the one I would expect to rust first as it's not classified as stainless. I have a CRK kitchen knife in S35VN and I noticed a few rust spots on the pommel/loop area that is left sticking out of a knife block. I probably didn't dry it well enough after using it but I'm still surprised.
 
Something definitely isn't right here, and I suspect it has to do with using it for food prep. I carried my Delica with me for about 2 years, and it went with me everywhere. Multiple sweaty hikes, vacations, came with me to work everyday (physical labor, very sweaty), and so forth, and didn't have the smallest hint of rust, never oiled it until I somewhat retired it when the clip snapped off of it. I find that the more you wash the blade, the more you'll have to oil it. Even though a fair amount of oils can withstand some washing, it'll eventually wash off. If it's being stored in a humid environment without any oil on the blade, I could see it rusting over time.
 
VG10 is a very popular kitchen blade steel, it should handle food prep very well without staining. However, there could be something left behind from food prep if it was rinsed and not washed off.
 
I live on an island and it's salty, humid air year round. I clean and oil my blades at the end of the day but they get used all day on service calls and job sites. There's plenty of sweat and moist dirt getting on my knives and my edc is usually s35vn or vg10 and I haven't had much of a problem with rust outside of a few spots that came off with 3in1 and microfiber.

Like others here, if what you say is true OP, I'd be very suspicious of the steel, it does in fact sound like bad heat treat or something being labeled vg10 that isn't.
 
Something is not right about that blade. VG10 in my experience does not rust like you are experiencing. I had a Fallkniven F1 in VG10 that I took with me for a military training course. The FTX portion was six days, five nights in the humid part of July. We had rain 2 of the days. Never cleaned or oiled my knife and used it for tent pegs, cutting cord, and general bored as crap tasks that I just wanted to pass time. Never a speck of rust. You may have a defective blade or it may not be VG10.
 
Where did you buy it?
Sounds to me like you may have gotten a chinese clone... your GF might be on to something here.
Check out THIS THREAD, which starts out with pictures of Vanguard clones.
 
I will add that if if is a genuine Vanguard, and you are cleaning it properly, and it is still rusting...

Try storing it in an airtight ziplock baggy with some of those silica gel packs.
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Where did you buy it?
Sounds to me like you may have gotten a chinese clone... your GF might be on to something here.
Check out THIS THREAD, which starts out with pictures of Vanguard clones.


I haven't seen anything about the Kizer Vanguard series being cloned.

Since the OP said Dukes, that sounds like he has a Kizer knife.
 
The only VG-10 I've seen stain or rust at all was a kitchen knife that was left in a camper year round and not always cleaned and dried or wiped with a thin coat of oil before a long storage ...

was it a one time situation or has it repeated it ? If it was a one time it definately could be cutting foods and not cleaning soon after or drying it well as some mentioned ...

so I'm leaning towards either you may have gotten a clone that isn't actually VG-10 or a possible bad heat treat ... it just doesn't sound right ...
 
I have 5 Kizer Vanguard series VG-10 knives and I am about to buy a 6th. I have never had a rust or patina problem. I carry the Vanguard Intrepid quite often and use it for everything. Get in touch with Wendy from Kizer.
Go to the Manufacturer's Forums on BF and go to Kizer and describe the problem. They monitor the thread constantly. Here is the link https://www.bladeforums.com/forums/kizer-cutlery.915/. They will probably replace it for youhttps://www.bladeforums.com/categories/manufacturers-forums.673/
 
The fact that your VG-10 is rusting readily is interesting. It leads me to believe that what you have may not be VG-10. I had a Spyderco Endura in VG-10 that I essentially put in my kit and left there, used it, put it back and never really did any preventive maintenance on it (actually forgot it was in my gear until I did a gear shakedown). I worked in a waterborne environment and was constantly wet. Very little rust appeared on the blade, mainly concentrated inside the spydie hole and on the thumb serrations.

I have similar experiences with my everyday Caly-3.5 (vg-10) that I carry just about every day. No noticeable blade rust.
 
I have never had corrosion issues with either steel although I have far more experience with VG10. Both steels should be good to go if properly cared for.
 
Hey
I have a duke vanguard in VG10 steel and it keeps rusting even when it has limited usage and usually sits in a draw at home (I have folders I like much more). Im not sure why it is rusting up so easily.

VG10 has 15% chromium so i'd expect the corrosion resistance to be pretty stellar especially when it does not come into contact with water. But my experience have not matched my expectations.

I'm looking at purchasing a knife in S35vn at 59-60Rc and wondering what experiences you guys have with it in terms of corrosion resistance?
S35vn has 1% less chromium but I am hoping somehow it is more corrosion resistant...

I think you might have something on your blade or something in the drawer. You never know what will cause rust or rust spots. I work in construction (actually work, tool bags, hands on, etc.) rather than just supervise. Keeping a knife in my sweaty pocket during our 105F days, I can cause any knife to rust.
I haven't had any problems with S35v or VG10 showing corrosion more or less than the other.

But I can tell you this. I learned the hard way that simply rinsing off a stainless knife with water will not protect it from corrosion from some elements. When I opened a box of TSP used for cleaning, my ZT S35v had a light coat of red corrosion on it by the end of the day. It was right along the line of how deep I cut the box so I knew it was some kind of exposure. Even though all the blade had was the light dust on the box (I didn't get the TSP on it) that was enough. I had rinsed it off after thinking it might get stained, then dried if off and put it in my pocket.

When opening water softener pellets and another time from fertilizer, another knife in S35v did the same thing. These two occurrences were different as they showed up a week later after sitting in the knife box I used to keep them in waiting to be resharpened and returned to rotation.

I had a SEKI made knife a few years ago with a VG10 blade (Al Mar?) and although it didn't require much care, it did require some to keep it from corrosion from my daily use. I bought that knife thinking I would have NO maintenance, but it wasn't so.

Now I have a bulletproof solution to my corrosion problems. I will wipe off my blades after a long sweaty day with WD40. No screeching or reproachments needed... I never use it as a lubricant as it was proven almost 35 years ago by professional gunsmiths as fouling guns. (Important to note they never claimed it was a lubricant). Used as designed (Water Displacement formula 40) it is better than anything I have ever used as protection. Try spraying the WD40 on a paper towel and wiping the blades before storing or even carrying in a sweaty pocket. For long term corrosion, I have another solution that I came up with for my wood chisels, router bits, drill bits, and other cutting tools I use all day. I bought a cheap tool bag at Home Depot and soaked it inside and out with WD40. I let it dry, then pile in the tools. NO rust.

While my knife collection isn't much compared to the collectors here, I have about 120 knives. They get the same storage, the WD40 soaked tool bag. No corrosion. Whatever is in the WD40 off gasses slowly as I don't treat the bags but once a year or more.

I have read posts in the traditional forum where folks are surprised that maintenance in climate with high heat and humid weather for a knife that spends a lot of time in a sweaty pocket required. They claim they can use any carbon steel with NO maintenance and have no problems. My point is that for some of us, all knives require a bit of maintenance. It doesn't have to be much. I think you probably exposed your knife to something that needs to be neutralized (try the WD40 wipe or some other light oil) and make sure you don't have anything in the drawer that could accelerate corrosion.

Robert
 
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