Whats the typical material used for manufacture of the enlisted mans spike and wappen?
A distinction must be made between peacetime and wartime production :
***Pre-war helmets of the enlisted mans M1895 :
---Helmets with "gold" trim were made of brass
Brass, sometimes called yellow copper or yellow bronze,
is a metal alloy composed essentially of (red) copper (symbol Cu) and zinc (symbol Zn), in variable proportions, with possibly other associated metals such as lead, tin, nickel, chromium or magnesium (white or light grey metals). The front plates (like the Prussian infantry eagles) were sometimes gilded.
In theory, the linings of M95 helmets should have been made of Tombac, i.e. an alloy with more copper-red than brass. In practice, only a few plates or linings were made from this metal, such as some very red Württemberg or Bavarian plates.
---Helmets with "silver" trimmings were made of nickel silver, which is an alloy with more white metals and less red copper. Nickel silver is an alloy of copper, zinc, nickel and sometimes lead in very small quantities, appreciated for its silvery appearance or metallic white sheen, and for this reason is sometimes called argentan or alpaca. Front plates (such as Pionniers Prussian eagles) were sometimes silvered or treated with Berlin White.
***---Post mobilization helmets of the enlisted mans M1914 :
Given the continental blockade imposed on Germany and the shortage of semi-precious metals, "ersatz" alloys appeared, known as "Kriegsmetal". Even for officers, gold-plated brass was replaced by zinc or gold-plated iron.
---Helmets with "gold" trim were made of brass, (old M95) or copper-aluminium, and even brass-plated iron (war production).
---Helmets with "silver" fittings were made of nickel silver ( old M95) Après 1914, alloy of antimony, zinc, tin or lead with little or no copper, lower quality nickel silver. Ersatz" production also included brass tips and fittings (many of which were still in stock), but nickel-plated to give them a "silver" appearance, as requested by the Leib-régiments and the Pionniers.
Post-1914 helmets, such as the 115 Hessian and the 109 Badois, show the most deviation from the quality of "precious" alloys. The other regiments were "standardised" with the standard model 15, in grey-painted iron.