[quote]aluminum ferrule[/

YES THE BODY AND TIP ARE ALUMINUM. BUT 7075 TYPE 3S HARD COAT THAT IS 65C ON THE HARDNESS TEST. THAT IS VERY HARD IF YOU DO NOT UNDERSTAND 65C.
THAT IS AS HARD AS TOOL STEEL OR SS, AND UNLIKE OTHER BROADHEADS OR RAZOR TIPS THE ENTIRE BODY IS THAT HARD NOT JUST THE TIP.

THIS IS THE ONLY BROADHEAD THAT IS TYPE 3S HARDCOAT ALSO.
THE ONLY OTHER OUTDOOR COMPANY THAT I KNOW OF THAT IS WILLING TO SPEND THE MONEY ON HARDCOAT IS "SUREFIRE" AND THEY HAVE AWESOME PRODUCTS

Rugged construction
SureFire lights are either CNC machined from aerospace grade aluminum or molded from Nitrolon, a proprietary polymer that is non-conductive and extremely corrosion and impact resistant. Available finishes include a Military Specification Type III Hard-Anodized. This finish is so tough that a flashlight coated in it can actually be used to saw through other aluminum flashlights with standard finishes.

www.surefire.com

THAT IS PULLED RIGHT OFF THERE WEB SITE