SR77 COMPARATIVE CORROSION TEST
#6432
10/11/06 11:31 AM
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Joined: Sep 2006
Posts: 4,489
Paul the Brit'
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Junk Yard Dog
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OP
Junk Yard Dog
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Ok I'm not the scientist in the family but as I was going to do more work on my Scrappers edge I thought I'd 'torture' him a bit first!
I put my black Scrapper, a nekkid Camillus Kabar type knife (1095 carbon), an Ontario Freedom Fighter Navy knife (440A stainless) and my CRKT Kasper fixed blade (AUS6M stainless) in a mug with about 1.5 to 2" of hot salty water in. There was about a level teaspoon of salt in the water... I got on with chores and left them to marinade for three hours at room temp (22C). On returning I got the knives out of the water, gave them a shake and put them aside for about an hour.
I don't have access to a digital camera so no photos, sorry! I've ranked the knives best to worst for visible effects-
1/Kasper; this was unmarked by its ordeal
2/Scrapper; there were small speckles of surface rust on the bare metal and patches of a black 'bloom' on the edge below the waterline. Above the waterline where vapour had settled were a few tiny rust spots.
3/Ontario Navy; this was similar to the Scrapper but had much more rust spotting below the waterline. It too had black blooms but these were smaller than the Scrappers. Above the waterline vapour had caused a greater area of small rust spots on the blade! Considering this is supposed to be a salty environment blade (440A stainless!!) this level of 'staining' surprised me.
4/Camillus kabar; as mentioned this was a nekkid blade its black phosphur coat having worn away many years ago... it suffered lots of black bloom patches and had LOTS of rust spots above and below the waterline. This poor thing needs a good sandpaper and oil...
This wasn't an exhaustive (or over long) test but I thought it was worth doing. I was amazed how much better the Scrapper was over the Ontario Navy, I never expected this result. In fairness I could just have a 'poor batch' Ontario Navy and this result is skewed...
I am aware from you guys and the 'yard sight that Scrappers are jackhammer bit tool steel- (and IMHO) they are also corrosion passive! (I'll post later how hard it was to clean up and resharpen my Scrapper and the rest)
JYD #3 Poor, but still dreaming of a sage and black SOD CG...
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Paul the Brit']
#6433
10/11/06 11:34 AM
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Joined: Sep 2006
Posts: 3,533
Gravelface
Junk Yard Dog
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Junk Yard Dog
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Posts: 3,533 |
Wow, Mr. Wizard is already conducting test....test it by hacking through doors and trees and cars!!!!
EMail if you have a spare 460!!!!
JYD# 2
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Gravelface]
#6434
10/11/06 11:40 AM
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Joined: Sep 2006
Posts: 4,489
Paul the Brit'
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I figured that was already being done elsewhere! Anyway it's raining very heavily here so I'm not going out into the countryside to hit stuff anytime soon! Besides the folks round here would probably get a little annoyed if I cut the door off their brand new BMW, Merc' Jeep, Audi A4...
Mr Wizard???
JYD #3 Poor, but still dreaming of a sage and black SOD CG...
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Paul the Brit']
#6435
10/11/06 12:12 PM
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Joined: Oct 2006
Posts: 12
poodle
Pound Puppy
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Pound Puppy
Joined: Oct 2006
Posts: 12 |
thanks for the test results; i live in seattle!
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: poodle]
#6436
10/11/06 12:18 PM
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Joined: Sep 2006
Posts: 3,533
Gravelface
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Junk Yard Dog
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Mr. Wizard....Tv show from mid-80's...fellow went around doing all sorts od science experiments.......come on I know someone here used to watch it!!
EMail if you have a spare 460!!!!
JYD# 2
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Gravelface]
#6437
10/11/06 12:34 PM
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Joined: Sep 2006
Posts: 169
Patti
Administrator
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Administrator
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Posts: 169 |
Mr. Wizard....Tv show from mid-80's...fellow went around doing all sorts od science experiments.......come on I know someone here used to watch it!! Now we have "Bill Nye, the Science Guy" and "The Myth Busters" to watch. Patti
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Patti]
#6438
10/11/06 12:46 PM
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Joined: Sep 2006
Posts: 3,533
Gravelface
Junk Yard Dog
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Junk Yard Dog
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Oh, come on...I am not that old.....I watch those fellas also, but Mr. Wizard is the OW (Original Wizard). You do know who I am talking about though.....don't you....please, I don't want to be the only one here knowing what I am talking about! <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />
Last edited by Gravelface; 10/11/06 12:46 PM.
EMail if you have a spare 460!!!!
JYD# 2
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Gravelface]
#6439
10/11/06 01:27 PM
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Joined: Sep 2006
Posts: 10,175
Evolute
Junk Yard Dog
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Junk Yard Dog
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Jason,
I remember Mr. Wizard.
Mike
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Evolute]
#6440
10/11/06 02:04 PM
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Joined: Sep 2006
Posts: 3,533
Gravelface
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Junk Yard Dog
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Alright!!! I got a second!!!!
EMail if you have a spare 460!!!!
JYD# 2
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Gravelface]
#6441
10/11/06 04:34 PM
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Joined: Sep 2006
Posts: 46,634
Private Klink
Junk Yard Dog
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Junk Yard Dog
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Posts: 46,634 |
Junk Yard Dog #1 Moderator/Leader of the Pack Good night Mrs. B, wherever you are! Long Live the Brotherhood of the Yard!
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Private Klink]
#6442
10/11/06 05:12 PM
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Joined: Sep 2006
Posts: 4,489
Paul the Brit'
OP
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OP
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I don't think Mr Wizard made it over the pond, Myth Busters have and they are seriously funny!
JYD #3 Poor, but still dreaming of a sage and black SOD CG...
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Paul the Brit']
#6443
10/11/06 07:08 PM
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Joined: Sep 2006
Posts: 87
Stealther
Pooch
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Pooch
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Posts: 87 |
Thanks for the test report but!! <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Stealther]
#6444
10/11/06 08:11 PM
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Joined: Sep 2006
Posts: 46,634
Private Klink
Junk Yard Dog
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Junk Yard Dog
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Posts: 46,634 |
Stealther, I like your response. We need to get more graemlins, emoticons, or whatever you call them readily available on this forum (unless I'm just missing something).
Junk Yard Dog #1 Moderator/Leader of the Pack Good night Mrs. B, wherever you are! Long Live the Brotherhood of the Yard!
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Private Klink]
#6445
10/11/06 08:19 PM
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Joined: Sep 2006
Posts: 4,489
Paul the Brit'
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OP
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Stealther you send me a camera I'll give ya pics! Having said that the test knives are now nice and clean and shiny again.. Ok, in my crap mini test at least I showed that sr77 seems about as rot proof as 440A- that isn't entirely worthless...
JYD #3 Poor, but still dreaming of a sage and black SOD CG...
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Paul the Brit']
#6446
10/12/06 02:43 AM
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Joined: Oct 2006
Posts: 12
poodle
Pound Puppy
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Pound Puppy
Joined: Oct 2006
Posts: 12 |
paul seems to have provided us with a pretty good picture without any pictures!
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: poodle]
#6447
10/12/06 03:05 AM
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Joined: Sep 2006
Posts: 87
Stealther
Pooch
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Pooch
Joined: Sep 2006
Posts: 87 |
I'm just a visual creature I guess! Paul, I like what you're doing with your tests, so this time only, I will offer my photography services to you at no charge. Simply send me the knives and I'll take photos of them for you! <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />
Stealther a.k.a.GrumpyGumby
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Gravelface]
#6448
10/12/06 03:18 AM
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Joined: Sep 2006
Posts: 7,208
Andy Wayne
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Oh, come on...I am not that old.....I watch those fellas also, but Mr. Wizard is the OW (Original Wizard). You do know who I am talking about though.....don't you....please, I don't want to be the only one here knowing what I am talking about! <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" /> I remember too. <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />
JYD #4
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Andy Wayne]
#6449
10/12/06 08:12 AM
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Joined: Sep 2006
Posts: 4,489
Paul the Brit'
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OP
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Thanks for the offer stealther but I prefered the travel arrangements my way round... <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
JYD #3 Poor, but still dreaming of a sage and black SOD CG...
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Paul the Brit']
#6450
10/12/06 11:31 AM
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Joined: Sep 2006
Posts: 278
thombrogan
Mongrel
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Mongrel
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Great work, Paul! And what a surpize to find that your 440A knife liked rusting so much.
Gravel-Face,
Do remember the tv show "Dinosaurs?" In some of the episodes, they'd have a "Mr. Lizard's World" and that show would always end with an explosion and Mr. Lizard saying: "Uh-oh. Looks like we need another 'Timmy!' "
I remember Mr. Wizard's World, too, but my wifey reminds me that I'm old.
"I knew you before you knew you had hands" ~Tracey Brogan
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: thombrogan]
#6451
10/12/06 08:56 PM
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Joined: Sep 2006
Posts: 4,489
Paul the Brit'
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OP
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Thom I never expected the 440A to rust like that... I have seen some corrosion on stainless that was years old but (decent) 440A after three hours- weird! The sr77 really did itself proud in that 'environment'.
JYD #3 Poor, but still dreaming of a sage and black SOD CG...
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: thombrogan]
#6452
10/13/06 02:40 AM
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Joined: Sep 2006
Posts: 7,208
Andy Wayne
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Junk Yard Dog
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Do remember the tv show "Dinosaurs?" In some of the episodes, they'd have a "Mr. Lizard's World" and that show would always end with an explosion and Mr. Lizard saying: "Uh-oh. Looks like we need another 'Timmy!' " Yep! Not the Mama!
JYD #4
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Re: SR77 COMPARATIVE CORROSION TEST
[Re: Andy Wayne]
#6453
10/13/06 07:29 PM
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Joined: Sep 2006
Posts: 4,489
Paul the Brit'
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OP
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Just remembered that show, it was SO funny... 'Not the mama', how did I ever forget that?
JYD #3 Poor, but still dreaming of a sage and black SOD CG...
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