Anyone have any information about SR77?

Check out S7 steel for a little reference, its very high impact, good edge retention. Its a "you cant lose" type of steel, especially for the price. :D
 
I'm sorry, I should have specifically asked about S7 steel. Anyone have any links, references for me? I have looked on AG Russells steel chart.
 
360joules said:
Here's some great info from Rat Chat...

SR101 vs. SR77
SR77

:D :D
Click to expand...


Thanks, when I reload my knife money next month, I'm going to get a 6 or 7. The steel sounds like it can handle what I'm going to put it through. I just hope there are some left by October.


And yes, I prefer the Res C handles.
 
I was able to dig this up:

S7 is a somewhat similar alloy to S5, but with significantly more Cr and Mo, and less Si (S7 has 0.55% C, 0.70% Mn, 3.25% Cr, 1.40% Mo, 0.25% V, and 0.35% Si). S7 is becoming a popular steel for survival and combat knives as a result of its excellent toughness. While the Cr content makes this alloy somewhat rust resistant, S7 will definitely rust, and so these knives are commonly coated with some sort of rust resistant coating.

52100 is a somewhat harder, but nonetheless similar alloy, used to make ball bearings. 52100 is composed of 1.0% C, 1.5% Cr, 0.35% Mn and 0.35% Si. It requires some specialized (and involved) heat treating/quenching procedures, but can be heat treated up to a hardness of 67 Rc, and then drawn down to Rc 56-61, depending on the tempering temperature used. 52100 is well-liked among knife-makers for its toughness. This alloy is popular with certain makers for survival knives as a result of this trait (Swamp Rat Knife Works uses a variation of 52100 they call SR-101). These knives are also commonly coated with some sort of coating to prevent rusting.
 
Two makers on another forum informed me that edge retention is not one of S7's strong points, to put it lightly. Any comments on this?
 
silenthunterstudios said:
Two makers on another forum informed me that edge retention is not one of S7's strong points, to put it lightly. Any comments on this?
Click to expand...
It isn't 420J2.

Think of it as being the difference between S30V, ATS-34, and 440A. All are capable of carrying great edges, but lose their edges in verying degrees, quicker (of course, based upon use). On the same token, the blades that lose their edges quicker are easier to sharpen. Proper heat treat of any steel still is the determining factor when it comes to the quality of any steel.

I don't think the Busse family would deal with anything less than a high quality steel; regardless of price. Besides, how would they hook you into buying their higher-end stuff if your introductory "affordable" knife was crap? ;) :D
 
Deadhead Archer said:
I don't think the Busse family would deal with anything less than a high quality steel; regardless of price. Besides, how would they hook you into buying their higher-end stuff if your introductory "affordable" knife was crap? ;) :D
Click to expand...


Yeah, I'm one of Jerrys followers, or actually, Amy and Erics followers for now ;) :D , I'm not bashing Scrap Yard. I honestly don't think that they would put out a knife with a defective steel. I just wanted some information about S7, and was informed that it really doesn't have a good edge holding capability on another forum, by fans of Busse and Swamp Rat. Now, that was their experience, I'd like to hear some other experiences.

In no way was I trying to stir up some shit, Swamp Rat is among my favorite knife companies. In regards to Jerry not letting anything with the family name on it go out the door that was crap, I have faith in Jerry and his product. Eric, I know that your house is in the Swamp, but if you could provide some insight for me, thank you. I'll send you a PM.
 
I've been curious about this as well. I've heard that Jerry's heat treat has brought this steel to a new level. I'm anxious to get one of these blades in my hands so that I can find out first hand. ;)
 
greens said:
I was able to dig this up:

S7 is a somewhat similar alloy to S5, but with significantly more Cr and Mo, and less Si (S7 has 0.55% C, 0.70% Mn, 3.25% Cr, 1.40% Mo, 0.25% V, and 0.35% Si). S7 is becoming a popular steel for survival and combat knives as a result of its excellent toughness. While the Cr content makes this alloy somewhat rust resistant, S7 will definitely rust, and so these knives are commonly coated with some sort of rust resistant coating.

52100 is a somewhat harder, but nonetheless similar alloy, used to make ball bearings. 52100 is composed of 1.0% C, 1.5% Cr, 0.35% Mn and 0.35% Si. It requires some specialized (and involved) heat treating/quenching procedures, but can be heat treated up to a hardness of 67 Rc, and then drawn down to Rc 56-61, depending on the tempering temperature used. 52100 is well-liked among knife-makers for its toughness. This alloy is popular with certain makers for survival knives as a result of this trait (Swamp Rat Knife Works uses a variation of 52100 they call SR-101). These knives are also commonly coated with some sort of coating to prevent rusting.
Click to expand...

Pretty accurate. SR101 is like 52100 except that has more of one major constituent in it. But of curse the HT is what sets these knives apart from everything else
 
I have pm'd Eric, and have spoke with Scott Gossman of Razorback Knives. He showed me an S7 blade that he shot with a 41 magnum (lesson noted, don't piss of knifemakers :D). Anyway, the blade was sharp, and didn't take too much damage. He said he was about ten feet away. :eek:

I've read in the past few days about the key being the heat treat to S7, I will bite the bullet on the 6 and 7 models next month. I will also try to get a review for the Rats here on the 6 and 7 and how they perform in the back yard (winter is coming, and it looks like using a Scrapyard would be more fun than a chainsaw, at least for a little while).
 
I know that S7 is used in a lot of high quality hammers like the titanium handled ones by Stiletto as well as Vaughan and Dead On Tools. It really does make an excellent hammer face in my experience, so hopefully the toughness in that trade translates into these blades!:thumbup:
 
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