"Disposable" razor blade cartridges cannot be recycled because they are made of many different materials, including plastic, steel and rubber.
Re-useable safety razors are an eco-friendly alternative that's wallet-friendly too.
TSS - Safety Razor + 1 Pk of Blades
Made of corrosion-resistant chrome-plated copper, these razors are 100% plastic-free and designed to last a lifetime.
The standard double-edge safety razor blades it uses are fully-recyclable and eco-friendly too, just unscrew the top to replace the blade.