![]() ![]() This variance in hardness may be a result of the shocked vs. 9% of the samples have hardness over 230. The average Brinell hardness is 169, but with an upper limit of 330. For a better high hardness test, the meteorite study includes the Brinell scale as well. For example, the difference in theoretical hardness between 95 and 100 is much larger than the difference between 40 and 50 on the Rockwell scale. Rockwell B is a hardness test for softer materials, so it doesn't scale well to harder materials. The average Rockwell B hardness is 95.7 over the range 43-100. For a comparison to more modern materials, 's database has information of 176 types of high carbon steel. The 95% upper limit for the bridge iron is 72 92% of the meteorite samples had a hardness greater than this. The average Rockwell B hardness of 24 meterorite samples is 81 while the average from 53 bridge components is 58. For a comparison, we can use this study of wrought iron sampled from 10 bridge built in Massachusetts in the 1800s. A study of 22 siderites (Iron-Nickel meteorites) reported on their hardness in Table 1 here. A harder blade will cut through a softer one (or wood or bone) without getting blunted.īoth these alloys have a hardness advantage over regular iron. That is, when a force is applied, how resistant is the material to deforming. Hardness is the resistance of a blade to strain. The melting point of both kamacite and taenite is not significantly different from iron, so normal, time-period appropriate methods of swordmaking would be valid. The crystal can be directly worked into a sword via the normal methods. There is no longer any need to smelt to mix the alloy. Finding these crystals means that you have found a pre-mixed alloy. A kamacite crystal listed in table 1 here had dimensions of 0.92x0.54x0.23 meters, and a mass of 303 kg plenty of material to make a whole batch of swords. Kamacite, in particular, can form massive crystals. Taenite's composition is from 20% to 65% Nickel. Kamacite's composition is in the 90:10 to 95:5 Fe:Ni range. Kamacite and Taenite are both Iron-Nickel alloys found (on Earth) only in meteorites. One I hope I will not get, but one I can accept if that's the case. Note: Well described and proven impossibility of such meteorite iron also counts as an answer. ![]() If tech required is sufficient to make modern alloys, it is no-go. Last but not least, it must be possible to actually forge it using medieval techniques, and it must be impossible to forge something better or even similar using available technology and no meteorite iron.Basically, anything that would make clearly superior swords or armors. Qualities I seek are resistance to breaking, edge retention, resistance to chipping/notching, ability to forge it thinner, et cetera. ![]() Only similar enough that calling it "meteorite iron" or "star iron" would seem justified.
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