(from the web site)
Blade
Material: X90CrMoV18
Internationally also known under the ASTM designation 440 B. You will recognize that alloy from high-grade hunting knives as well
In actual bowhunting practice you will appreciate the first-class combination of edge-retention and easy resharpening.
The blades are a ready to use right out of the box! That’s right, both the assembled broadheads as well as the replacement blades are razor sharp and will take the hair off your arm effortlessly.
Handle with the utmost precaution!!
SAFETY FIRST AND ALWAYS!!
A CNC-Laser cuts the blades from a tool steel board. The thickness of 1.80mm (.071”) and the grinding of the cutting edges are made in a CNC wet-grinding process to preserve the hardness of the steel. No other manufacturer offers this blade strength!! Prior to this process the blades are bead-blasted and vibratory ground.
The blades are precisely tempered to 55-57 HRC.
In order to ensure a homogenous molecular structure of the steel, the blades are then subzero quenched in a special cooling chamber.
The final process in achieving razor sharpness is accomplished by de-burring of the edges on a wheel containing elephant leather and a special polish paste.
The rear blade (trailing edge) is not sharpened at the factory. This feature serves the intended purpose, as well as the rounded off ferrule, an easier arrow retraction.
All blades have a cutting diameter of 1-1/8" to meet all relevant hunting laws and regulations worldwide.
The treatment of the blades is made by a specialized company for high-quality industrial knives in Germany’s "knifemaker capital city" SOLINGEN.