Is chain mail expensive?

It might be informative to look at how people make chain-mail today, e.g. http://metalsmithing.wonderhowto.com/how-to/make-chain-mail-armor-from-start-finish-0118499/ While medieval armorers didn't have the options of working in aluminum or titanium, I doubt that much else has changed. Looks fairly labor-intensive but, as noted above, much of it is unskilled labor.

Chain mail is more expensive primarily because it is more labor intensive to make it, and that has always been the case. However, anyone who wanted to use any form of armor had to decide what form of protection they wanted and then decide whether or not the extra expense was justified.

Chain mail could tend to be heavier and would concentrate most of the weight on the shoulders, while plate mail would distribute the weight a little more evenly and could be broken into sections. However, the big advantage of chain mail was that it distributes force more efficiently and it could provide better protection against piercing weapons such as arrows.

Having read all these comments, I am impressed with the amount of knowledge shared on this forum. Very informative, I am also a writer of Sci-fantasy and I found this to be an excellent well of information. But I do have to pose the question that as we talk about materials and their abundance I wonder if as a person dials back the gauge of time, how common do some of these materials become? There are stories in antiquity of kings being made of gold, of the rich lands of the fertile crest being laden with ore and jewels. So I wonder, how good the quality of arms and armor were? If ore is found on the ground and it is considered a gift from the gods so to speak, then it surely is a lower grade of iron and it could be possible that lower grade was made into a low grade steel. Upon looking at photos and pictures of the era that I write in, it was more common for sinew and wood or reed armor to be produced than that of bronze or iron. The expense was too expensive for any kind of metal and it was cumbersome for a solder to carry or wear. I mean if we take Hoplites for instance, the typical wear was greaves, leather skirt, bronze chest plate, semi closed helm and a large round shield. But that was not what made them so formidable for their day. I mean it helped, but they had the phalanx. I guess my argument for the middle ages was that if a lord or duke or viscount had to pay to arm and armor his army, chain would be the best way to go because of its 1) Durability, 2) ability to pass down to the next generation of solder after another one dies, 3) and the cost ratio. Plate was introduced due to better weaponry, it didn't last very long because eventually weaponry caused it to be too expensive to try and keep up and fit your army with it. It was cheaper to fit a solder with a rapier, flint lock musket and a simple metal helm to keep with the technology of the powder age. It was also the same reason that castles were not being built as often as soon as cannon were invented, it just simply became obsolete. Plate mail didn't really last that long, but Chainmaille was around for many centuries and used the idea of a medium amount armor with a decent shield was easier and cheaper. And though it was costly to make Chain mail at first, in the long run, it was cheaper. I think plate mail was reserved for lords who could afford to equip it to his very few and select solders, but if you were fitting an army, often it wasn't either Chain mail or plate mail, often it was just hardened leather, studded leather and a wooden shield. The cost of that for your army as a lord was enough especially when we start to get into armies that reach into the thousands. Not many, if any lords could afford to put chain or plate on their army when the numbers were that high. But they did on a few occasions, kings especially were expected to keep up with "The Jones" so to speak and bankrupted their countries doing so. Anyway, that is my take on it.

(I make a few generalisations here, beware)

Economy of scale is a factor in the production of maille, especially in Europe during the early medieval period. During much of the Roman period, iron was mined - mining (espeically deep mining) is an extremely labour intensive activity which can only be supported by a stable and sophisticated economy. The benefits, however, are the smelting of highly concentrated ore to create metals with few impurities. Thus, the prevalence of lorica segmentate (plate armour essentially) at the height of the Roman empire.

In the later Roman period civil war had broken out, and the gift-economies of the 'barbarians' took over as the predominant system in Europe. These economies do not rely on gold or silver as a means of exchange, instead using domestic livestock as the unit of account. In these economies, large scale operations for mining are extremely difficult. So, much of the iron used becomes that which is found close to the surface, or bog iron. This is full of impurities and required a lot of processing to get workable metals (for example, the technique of pattern welding is used to overcome the inherent weakness of steel made from bad iron). In this case, creating wire is a better substitute; it's relatively easy to produce at scale, and requires less processing as a steel plate would. The gauge is thin and the inner-diametre is small (6-9mm) so uses little material. 'Knitting' the wire together is quick and can be done with finger strength alone before the rivet is tapped, enabling low-skilled labour.

These factors make maille a relatively 'cheap' product compared to plated armours (scale, lamellar, full plate harnesses etc). Later, when silver economies reassert themselves (~600-900AD), the production of maille becomes a viable option on a larger scale, then as economies stabilise under the feudal lords of Europe (lots of tax income again), plate becomes possible again.

In terms of raw material cost, we can look at bloomaries excavated in Iceland for clues: they found approx 5000kg of iron slag, containing 45-600% residual iron oxide representing possibly 1400kg of raw iron blooms. This would require approx 6400kg of iron bog ore and 22000kg of charcoal. After primary and secondary smithing, this represents about 370kg of bar iron. At 8-10kg per raw bloom, this is about 140 smelts - with 3-5 metal workers, this is about 9000 man hours - that's before starting to work it from bar to wire/sheet!

In terms of monetary cost, the Scandinavian unit of account (~13th Century) was a good milking cow of not more than 7 winters (or 120 standardized iron ingots c. 12.3kg).

Assuming 12.3kg is enough to make the necessary wire and rivets for a 8kg shirt, this gives us a good idea of a modern cost - it's about £1500 to buy a cow in the UK at the moment. Add in labour and I reckon it would be the price of a small family car. (In period, giving up food and a source of income - milk and meat - would inflate the cost by quite a bit!)

Smith, K.P., Ore, Fire, Hammer, Sickle: Iron Production in Viking Age and Early Medieval Iceland Skre, D. (Chapter 3) Silver Economies, Monetisation and Society in Scandinavia, AD 800-1000

You will find some cost/price data here: List of Prices in Medieval England

Image of the Armour data:

Expensive is a relative and subjective term, the best that can be done to answer the question as asked is to compare the prices with typical incomes/pay. For such a we find that a labourer would earn 1-4 pence per day (the lower pay is earlier the higher later medieval times), and a banneret was getting 4s/day (1316). Alternativly a rough conversion factor of about 1000 between prices in the mid 14th C and today could be used but it would have to be treated with extreme caution as wages and prices structures were very different then. This could be summarised as mail (armour in general) was expensive compared to the income of a labourer and not when compared to the income of an earl. There would also be a range of prices for differing quality and used etc. A possibly good comparison good today, for armour in general, might be a car, where a drivable old-banger can be had for less than ~£1,000 and at the top end prices exceed £1,000,000... but now we are straying into an area that may be categorised as opinion.

Currency: L - pounds, s - shillings, d - pence. 12 pence = 1 shilling, 20 shillings = 1 pound

The sources:

[3] Standards of Living in the Later Middle Ages, Christopher Dyer, Cambridge University Press, 1989

[4] English Weapons & Warfare, 449-1660, A. V. B. Norman and Don Pottinger, Barnes & Noble, 1992 (orig. 1966)

[5] The Armourer and his Craft from the XIth to the XVIth Century, Charles ffoulkes, Dover, 1988 (orig. 1912)

[6] "The Cost of Castle Building: The Case of the Tower at Langeais," Bernard Bachrach, in The Medieval Castle: Romance and Reality, ed. Kathryn Reyerson and Faye Powe, Kendall/Hunt, Dubuque, Iowa, 1984

[7] The Knight in History, Frances Gies, Harper & Row, New York, 1984