Zwickey Rockwell hardness

[gordydog]

Really like how easy Zwickeys sharpen. What is the Rockwell hardness?

[Dave Lay]

I’ve read. 59-62
     I’ve shot zwickeys for 40 years and have tried a lot of others looking for the magic head but always come back to deltas

[Tedd]

I like them also. They seem like the have maximized width and still have perfect flight. I just mounted a dozen, epoxied to steel adapters. This batch ordered from Three Rivers are the straightest spinning heads I ever had. They all spin perfect with no adjustment. Easy!
 For sharpening I use a H F 30"x1" belt sander. It was about $40. A series of belts including a leather strop belt makes them crazy sharp. I'll have a dozen done in about 1/2 hour.

[razorsharptokill]

Love the Deltas, using them on Antelope in a few weeks. I use the KME or a paper wheel.

[MCNSC]

I haven’t checked hardness but don’t believe them to be 58-62, just guessing but I’d think 48-52 range. You wouldn’t be able to file them if that hard plus they would chip , I’ve never had one chip but have bent a few. What ever the hardness they are my favorite head. Easy to sharpen and hold a edge pretty well, fly great and are reasonably priced

[acedoc]

Zwickeys are the second easiest head to sharpen irrespective of what you use - file, whetstone, KME, Lansky or any other.

[Zwickey-Fever]

Not to discredit any broadheads out there but I am done looking for that magic broadhead. I have been using Zwickeys with great success over the years, mainly the 2 blade Zwickey Deltas. I glue them on a 100 grain steel broadhead adapter, 50 grain brass insert in a 28 1/8 500 Goldtip shaft. Launching them from a Martin Dream Catcher 56#@28'' bow. Its a thumper! For the money and toughness, you can never beat a Zwickey. Some of my Zwickey Deltas I have been using for years, the green is almost completely gone but still fly true and hold a edge. I use a Lansky sharpening system. They get beyond sharp.

[gordydog]

Yes, they are a great broadhead...mount easy, spin true, reliable, easy to sharpen... I have shot about 36 trad deer, a bear, two turkey with mostly 2 blade delta, about 8 with 4 blade delta and a few 2 blade eskimo. They never fail.

[Zwickey-Fever]

The Rockwell scale is a hardness scale based on indentation hardness of a material. The Rockwell test measuring the depth of penetration of an indenter under a large load (major load) compared to the penetration made by a preload (minor load).[1] There are different scales, denoted by a single letter, that use different loads or indenters. The result is a dimensionless number noted as HRA, HRB, HRC, etc., where the last letter is the respective Rockwell scale (see below). When testing metals, indentation hardness correlates linearly with tensile strength.[2]
Hopefully this helps you and sorry for getting off the immediate subject matter and question you was wondering about.

[Zwickey-Fever]

The determination of the Rockwell hardness of a material involves the application of a minor load followed by a major load. The minor load establishes the zero position. The major load is applied, then removed while still maintaining the minor load. The depth of penetration from the zero datum is measured from a dial, on which a harder material gives a higher number. That is, the penetration depth and hardness are inversely proportional. The chief advantage of Rockwell hardness is its ability to display hardness values directly, thus obviating tedious calculations involved in other hardness measurement techniques.

[Skates 2]

Hmmm.. I've chipped a couple but never bent...would rather have a chip and move on through than a bend.

[Tedd]

Steep angle away, high rearward entry, passed all the way thru the front and stuck in the ground.

[gordydog]

Tedd, I had same shot placement and results with 4 blade delta.

[Tim Reese]

Mounted a few No Mercy’s this year to try. Plus Some ww’s.

[Wheels2]

I think there is a reason the old tried and true stuff is still around.
I was just able to do a trade for some Snuffers.  I should be goog for several.years now.

[hybridbow hunter]

I bent one on the lower part of shoulder bone of a gemsbok but it died within 100 yards