telling the diference between 420 and 440 steel

[knifeaholic101]

come on all you knife pros how can you tell a 420 stainless blade from a 440 blade?

 

[Alpha Knife Supply]

I don't claim to be an expert, but I do know how to determine different kinds of steel.

We send samples to Metal Test with a check for $25 and they send back a report. The test is accurate, simple and inexpensive.