Transformer Materials Intelligence
Input-cost signal for transformer sourcing. Copper and aluminium use the LME 3-month official settlement as the latest market reference (dated, sourced, labelled with a freshness status — never presented as a live feed). CRGO and other materials have no public daily index — they are shown as unavailable with the reasons explained, rather than invented.
Honesty statement: Copper and aluminium are the LME 3-month official ring settlement as latest REFERENCE (dated, sourced, not a live feed). CRGO, oil, ester, pressboard and tank steel have no established public daily index and are shown as unavailable/GRADE NOT SPECIFIED rather than invented. Unknown > incorrect.
Freshness scale: CURRENT_REFERENCE (observed within ~1 week) | AGING (verified, older) | STALE (verified, substantially older) | HISTORICAL (no verified public reference). Computed from observation_date; a reference is never presented as "live".
Aluminium
≈ 3,182 tAGING
LME 3-month official ring settlement as a latest reference. Varies by day; verify against the LME official price before commercial use. Not a live feed.
Copper
≈ 14,170 tAGING
LME 3-month official ring settlement as a latest reference. Varies by day; verify against the LME official price before commercial use. Not a live feed.
CRGO / grain-oriented electrical steel
No established public referenceHISTORICAL
There is no single global CRGO exchange price. Price varies by market, grade (M-3/M-4/M-OH etc.), loss class, conventional vs Hi-B, domain refinement, thickness, width, coil/slit form, volume, commercial basis, tariffs, freight and delivery basis. No grade-, thickness- and basis-specific verified figure is available here, so no concrete number is shown. Unknown > incorrect.
Natural ester
No established public referenceHISTORICAL
No public daily index for natural ester; price is negotiated and runs at a premium over mineral oil. Shown as unavailable rather than invented.
Pressboard / laminated pressboard
No established public referenceHISTORICAL
No public daily index for transformer pressboard; price is negotiated by grade and thickness. Shown as unavailable rather than invented.
Tank steel
No established public referenceHISTORICAL
Mild steel plate for tanks; price is a general steel-market input, not a transformer-specific public index. Shown as unavailable rather than invented.
Transformer oil (mineral)
No established public referenceHISTORICAL
No public daily index for mineral transformer oil; price is negotiated. Shown as unavailable rather than invented.
Focused monitors
CRGO Electrical Steel
No single global price
Prices legitimately differ by market, grade, loss class and commercial basis. See the market monitor for why, and the full context.
Open CRGO Market Monitor →Material references are the LME 3-month official settlement (reference) where available and are clearly labelled; they are not live feeds and must be verified against the official source for a commercial decision. See the research methodology.
Was this useful?
One tap tells us what to improve. Optional email for a follow-up.