Case-hardening powder

Case-hardening powder. Fast-acting iron concentrate. 

See description for instructions on how to use. 

Case-hardening powder. How to use: 

- heat the piece to be treated until it turns cherry red. 

- sprinkle its surface with cementation powder and repeat the operation as soon as it has melted, if you want to obtain greater penetration. 

- immerse in cold water, stirring until completely cooled.