No it's just handpainted. What does a good metallic texture is the specularity, it looks good in marmoset toolbag with a spec and gloss map. It's always hard to do at the beginning, I just begin to understand how it works ^^.
I see I see. So far, I've started to understand metalics a little bit. What I usually do is add like "studs" to make it look like screws or whatever are in the metal by making a circle in the normal map, but when it comes to scrapes in the metal, I can never get it right. But I think I see what you mean. If I were to use a good enough brush in Photoshop, I think that may work. I don't have a marmoset toolbag because I think that's in Zbrush and I don't have the money (or the processing power) to buy that yet haha. But thank you so much for the advice. From here on, I'm not gonna be using photos for my metal!... Unless it's environment of course...
No, Marmoset is a software used to do nice realtime renders without having to open a real engine like UDK or Unity. It doens't cost much ( $50 I think ) and is really useful if you want to preview your model in realtime.
The thing about specular is to always put some "noise", stains... to have a variation. If you make a flat spec, it will look like plastic, but if you have dark grey and light grey variations, it will look nice. You can use a brush or put a photo in overlay on top ( you can find some good photos on CG Textures for free ) and tweak the levels a bit to have more contrast.
I see I see. Sorry, I instantly assumed that you were using Zbrush because just about every artist on here uses it haha. But that makes total sense. I think maybe if I used the brush filter gallary, I could come up with some automatic scratches and then put an image over them and then blend the layer with one of the blend modes. Perhapse for the "noise" I could make a diffuse map and then place that over the texture and then do a blend again. I'm sure that'd work. Thank you so much for the advice though! I will try this out as soon as possible!