expanded metal
C1Technical
Definition
Meaning
A type of sheet metal that has been cut and stretched into a mesh-like pattern of diamond-shaped openings.
A rigid, lightweight material with a regular open mesh structure used for industrial, architectural, and security applications.
Linguistics
Semantic Notes
This is a specific technical term referring to a manufactured product, not a metaphorical description of something metallic that has expanded. The mesh pattern is integral, created by slitting and stretching the sheet.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences; the term is identical in both varieties for the product itself.
Connotations
In both regions, it primarily connotes industrial or construction contexts.
Frequency
Used with similar, low general-frequency but high technical-frequency in relevant fields (engineering, construction, fabrication).
Vocabulary
Collocations
Grammar
Valency Patterns
[noun] made of/from expanded metalexpanded metal [noun] (e.g., screen, guard, partition)to fabricate/cut/install expanded metalVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None”
Usage
Context Usage
Business
In procurement or manufacturing specifications, e.g., 'The quote includes 50 sqm of galvanised expanded metal.'
Academic
In materials science or civil/architectural engineering papers describing composite materials or construction elements.
Everyday
Rare; might appear in DIY or home improvement contexts.
Technical
The primary domain: construction, industrial safety (machine guards), architecture (façades, sunscreens), filtration, and reinforcement in concrete.
Examples
By Part of Speech
verb
British English
- The fabricator will expand the metal sheet to create the mesh.
American English
- They expanded the metal to form the grating.
adjective
British English
- We need an expanded-metal guard for the machinery.
American English
- The design features an expanded-metal screen for ventilation.
Examples
By CEFR Level
- The fence was made from a strong metal mesh called expanded metal.
- For the project, they specified aluminium expanded metal due to its corrosion resistance and lightweight properties.
- The architect's innovative use of expanded metal as a rainscreen façade provided both solar shading and a distinctive aesthetic.
Learning
Memory Aids
Mnemonic
Think of a metal sheet that has been 'expanded' not by heating, but by being cut and pulled apart into a diamond-patterned net.
Conceptual Metaphor
MATERIAL IS A NET (It transforms a solid, impermeable surface into an open, net-like structure while maintaining rigidity.)
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as 'расширенный металл' which is a calque and nonsensical. The correct term is 'просечно-вытяжная сетка' or 'просечно-вытяжной лист'.
Common Mistakes
- Using it as a verb phrase (e.g., 'The metal expanded in the heat' is unrelated).
- Confusing it with 'perforated metal' (which has punched holes, not a stretched mesh).
Practice
Quiz
What is the defining characteristic of expanded metal?
FAQ
Frequently Asked Questions
No. Expanded metal is made from a single, solid sheet of metal that is slit and stretched. Wire mesh is made from individual wires woven or welded together.
The strict definition refers to metal. Similar manufacturing processes applied to plastic sheets produce 'expanded plastic mesh' or 'plastic grid', which is a different product.
Key advantages include strength and rigidity from the unbroken strands, material efficiency (no waste from the expansion process), good ventilation and visibility, and anti-slip properties.
It is generally treated as an uncountable (mass) noun when referring to the material (e.g., 'three metres of expanded metal'). It can become countable when referring to specific pieces or types (e.g., 'different expanded metals are available').