What does invar mean?

invar (noun): An alloy of iron containing 35.5% nickel, and having a very low coefficient of expansion. As a hashtag, #invar carries this topic across social platforms.

How popular is #invar?

#invar has no measured public activity on the open social web in the last 7 days. It is currently wide open.

What hashtags are related to #invar?

No related hashtags with measured usage were found for #invar.

How much does it cost to own #invar?

#invar is available as a #name from $1,129.43 per year. You can claim it by card at https://hashtag.org/checkout/portal-name?name=invar or with tokens on hashtag.space at https://hashtag.space/#invar.

#invar

Name: #invar — a #name on hashtag.org
Brand: hashtag.org
Price: 1129.43 USD
Availability: InStock

Live, measured metrics for the hashtag #invar from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #invar

This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.

$1,129.43/ year · 5-character #name

Claim #invar — $1,129.43/yr→Buy on hashtag.space (web3)

card via hashtag.org · tokens via hashtag.space

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Uses / 7 days

Mastodon

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Accounts / 7 days

Mastodon

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Day-by-day usage

measured · mastodon.social (Mastodon public tags API) · fetched 2026-09-26 20:20 UTC

No measured public usage for #invar in the last 7 days. That is a real result, and a good one to know: this hashtag is wide open right now. We show a dash before we ever show a made-up number. Browse the trending index for tags with live measurements.

Related hashtags

measured · mastodon.social (Mastodon public search API) · fetched 2026-09-26 20:20 UTC

No related tags with measured usage found for #invar.

Live pulse

measured · Mastodon tag timeline · fetched 2026-09-26 20:20 UTC

No recent public posts found for #invar on Mastodon. Nothing measured, so nothing shown.

What “invar” means

Wiktionary · Wikipedia

invar

nounAn alloy of iron containing 35.5% nickel, and having a very low coefficient of expansion.

Full entry on Wiktionary →

Invar, also known generically as FeNi36, is a nickel–iron alloy notable for its uniquely low coefficient of thermal expansion. The name Invar comes from the word invariable, referring to its relative lack of expansion or contraction with temperature changes, and is a registered trademark of ArcelorMittal.

“Invar” on Wikipedia (CC BY-SA) →

#invar across platforms

every network with a public tag surface

Follow #invar straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.

X (Twitter) ↗Instagram ↗TikTok ↗Facebook ↗LinkedIn ↗YouTube ↗Threads ↗Bluesky ↗Mastodon ↗Reddit ↗Pinterest ↗Tumblr ↗

Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/invar