_GOTOBOTTOM
Armor/AFV
For discussions on tanks, artillery, jeeps, etc.
Track Blackening... Why?
RobinNilsson
Staff MemberTOS Moderator
KITMAKER NETWORK
Visit this Community
Stockholm, Sweden
Joined: November 29, 2006
KitMaker: 6,693 posts
Armorama: 5,562 posts
Posted: Thursday, August 27, 2020 - 09:32 PM UTC
Somewhere in the east on a cloudy day, i.e. diffused lighting


Doesn't give the impression of a bright shiny day but the polished surfaces of the tracks reflect lot of light which means that the surface is very smooth and reflective. I suppose that this could be replicated with some kind of alclad paint. Considering the lighting conditions in my display cabinet I think silver or aluminium metallic would give a very good replication of this appearance.


Another cloudy day?


The peculiar polishing on the inside wheels on the Panther




Now for something completely different (at least I presume that the alloys are different ....)
Polished to low quality mirrors




mgentom
Visit this Community
Troms, Norway
Joined: April 23, 2014
KitMaker: 7 posts
Armorama: 7 posts
Posted: Thursday, August 27, 2020 - 09:48 PM UTC
I have tried to blackend tracks from Friul with good results. In most case i dont need to use cyan glue for the track pins because the blackend process give the brass wire a coarse surface that locks the pin. But has any of You tried to blackend metal tracks from Masterclub? They use resin pins and I fear they would easily break when scrubbing the links. Of course the resin pins must be painted.
KurtLaughlin
Visit this Community
Pennsylvania, United States
Joined: January 18, 2003
KitMaker: 2,402 posts
Armorama: 2,377 posts
Posted: Friday, August 28, 2020 - 03:07 PM UTC

Quoted Text

By nature of the Manganese added to production to harden the steel and make them more durable, the steel used in tank tracks is not bright silver grey if unpainted it as very dark grey. As said previously here, the shade varies due the amount added by the manufacturer of the type of track.



To have a meaningful effect on wear and abrasion resistance without causing other problems the steel has to have huge amounts of manganese, like 8-10% as I recall. The classic "manganese steel" stands at about 12% Mn. In contrast the wearing track parts on US tanks were 4xxx, 5xxx, and 8xxx Cr, Mo, and Ni alloy steels that are below 1% manganese. Those alloys look quite as one expects of steel. When wear resistance was needed, such as on some grousers, Colmonoy nickel alloy was weld-deposited on the surface, and these areas did not even rust.

I was not really paying attention to this property in my travels, but I don't recall ever having a problem attaching a magnet to a steel track, US, German, or Russian; vintage or modern. Manganese steels, on the other hand, are non-magnetic.

While construction equipment may frequently use manganese steels tanks did and do not.

KL
 _GOTOTOP