How to Protect Steel from Corrosion. Hot Bluing

Bluing is a passivation process in which steel is partially protected against rust using a black oxide coating. It is named after the blue-black appearance of the resulting protective finish.

In order to successfully blue your steel you need to heat it to a temperature of 300-400 degrees Celsius (bluish color) and then dip it into the vegetable oil.

#shorts

[hayatel]

It's for estheticis only. Never heat steel for structural purposes.

[paulyoder]

Don’t do this to a knife, it will ruin the temper….

[keqingkawaii]

Wait isnt it a quenching like you heat a blade then put it in oil

[KamarulAzlanAhlengChai]

yes it works but i more prefer to chrome metal color huhu

[AnonYmous-iwrh]

A blowtorch and some Mazola ?!!??


Shit, that's all??

[makarushi_bichito]

Es algún aceite especial? O aceite de cocina?

[iloveit]

So it’s that easy to ‘blue’ steel? Just heat? Awesome thanks!

[velkmmen]

Is this how they made iphone 12 pro max?

[Mark-oe]

Could i do this to a pistol slide and barrel?

[VVeiQuek]

So, rust removal agent like wd-40 is actually not required?

[jamesromboldsr]

It's no good if you don't let us know what you using or why

[DisturbedVette]

A torch and some oil is all it takes huh? Does the oil matter?

[vcommandarv]

We can also use ferric chloride right?

[NoSe-twbm]

Hi, if it has already cooldown on room temperature, applying the oil still works? :(