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What Is TMT Rebar?
TMT stands for Thermo-Mechanically Treated — the process behind modern high-strength, ductile rebar.
How TMT rebar is made
Hot-rolled bar is rapidly quenched on the surface then allowed to self-temper from the hot core. This gives a tough, high-strength outer ring and a soft, ductile core — strength and bendability in one bar.
Why it matters
- High yield (B500B = 500 MPa) with good ductility for seismic zones.
- Good weldability (controlled carbon equivalent).
- Excellent bond thanks to rolled ribs.
We supply TMT rebar to BS 4449 B500B, ASTM A615/A706 and ISO 6935, mill-certified. Compare grades: B500B vs Grade 60.
Frequently asked questions
What does TMT stand for?
Thermo-Mechanically Treated — a quench-and-self-temper process that gives a hard surface and ductile core.
Is TMT rebar weldable?
Yes, within its controlled carbon equivalent — B500B and A706 are suited to site welding.
Why is TMT rebar stronger?
The quenched martensitic surface raises strength while the tempered core keeps ductility — better than older cold-twisted bar.
Need mill-certified steel in bulk?
Steel Pro Rebar Germany Gmbh exports rebar, mesh, structural steel, coil and plate worldwide with EN 10204 3.1 MTCs.
Request a bulk quote →WhatsApp: +49 163 1141934