I'm not entirely ignorant of science, thanks for asking. But I wasn't able to find a way to watch that full episode; if anyone knows of a way, I'd be interested to watch it.
But here's a clearer explanation of my point. 4140 stainless is a commonly used steel in the firearms industry. A few seconds searching gave the following information. Here's the composition data:
Chemical composition(mass fraction)(wt.%) of the ASTM 4140
Cr Ni 0.38-0.43 0.15-0.35 0.75-1.0 0.035 0.04 0.8-1.1 Mo Al Cu Nb Ti V Ce 0.15-0.25 N Co Pb B Other
And equally or perhaps more importantly, here are the mechanical properties:
Reduction in cross section on fracture
As-Heat-Treated Condition Brinell hardness (HBW) 547 (≥) 714 (≥) 22 13 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 344
So 4140 stainless is .3% (by mass) of carbon, .15% Silicon, .75% manganese, 0.035% phosphorous, 0.04% Sulfur, 0.8% Chromium, 0.15% Molybdenum, and has a tensile strength of 714 MegaPascals.
A36 is a common carbon steel alloy. Its composition is
Component Elements Properties Metric English Comments Carbon, C <= 0.290 % <= 0.290 % Copper, Cu >= 0.020 % >= 0.020 % Iron, Fe >= 98.0 % >= 98.0 % Manganese, Mn 0.85 - 1.20 % 0.85 - 1.20 % Phosphorous, P <= 0.040 % <= 0.040 % Silicon, Si 0.15 - 0.40 % 0.15 - 0.40 % Sulfur, S <= 0.050 % <= 0.050 %
Some of its mechanical properties are:
Mechanical Properties Metric English Comments Hardness, Brinell 119 - 159 119 - 159 based on conversion from tensile strength Hardness, Rockwell B 67.0 - 83.0 67.0 - 83.0 based on conversion from tensile strength Tensile Strength at Break 400 - 552 MPa 58000 - 80000 psi Tensile Strength, Yield >= 221 MPa >= 32000 psi
So "carbon steel" has a lower tensile strength than stainless, at 400-552 MPa.
Now, the composition of the Gibeon meteorite is given as 91,8% Fe; 7,7% Ni; 0,5% Co; 0,04% P; 2,4 ppm Ir; 1,97 ppm Ga; 0,111 ppm Ge
That's a LOT of Nickel, first of all. The Iridium and Gallium are probably insignificant. But what is the tensile strength? If they tested it, did they take enough samples to make sure the tensile strength was consistent throughout the source material? Maybe a qualified, experienced machinist could tell by how the material responds to the machining processes, but that's still a huge difference between this highly unusual alloy and more commonly specified alloys.
Now, having said all that, the research this post represents got me to read this article about the guns - https://robbreport.com/lifestyle/spo...photos-231849/ - which says The only parts of the Big Bang pistol set that aren’t made of meteorite are the springs, sears, barrels, hammer strut, pins, screws, and slide rails. Everything else—slides, frames, triggers, magazine release, and grips—is pure Gibeon. Speaking of frightening, the guns’ first test firing was a bit daunting.
Which changes the whole metallurgical question radically. The tensile strength is obviously the most important for the barrels. The modulus of elasticity matters for the springs. Hardness matters a lot for the slide rails, etc. etc. The slide, frame, etc. metallurgy is probably a lot more forgiving.
Yeah, yeah.. That's it! What he said. Now if he was talking about the Maillard Reaction, well now, THAT's a different story!