THE QST REBAR TECHNOLOGY

THERMEX

All TMX steel rebars are TMT rebars, but all TMT rebars are not THERMEX/TMX rebars. The structural uniformity is the highlight feature of TMX Bars. THERMEX process converts the bar surface to a hardened structure. The subsequent phase involves cooling at ambient temperature to allow the hot core to temper the surface through the Thermex exchange. This results in a unique structure of tempered martensite periphery and fine-grained ferrite-pearlite at the core. This structure should be uniform throughout the cross-section of rebars.

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Micro-structure of TMX Bars

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PEARLITE

Pearlite is a lamellar aggregate of ferrite and cementite. It is a result of the eutectoid reaction which takes place when a plain carbon is cooled slowly from the temperature range at which austenite is stable.

Thermex-Page-microstructure2
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BAINITE

Bainite is a decomposition of austenite consisting of an aggregate of ferrite and carbide. Its appearance is feather-like if formed in the upper part of the temperature range and acicular if formed in the lower part.

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MARTENSITE

It is formed by the rapid cooling of Austenite. Martensite is not shown in the equilibrium phase diagram of the Iron- Carbon system because it is a metastable phase, the kinetic product of rapid cooling of steel containing sufficient carbon.

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KERALA'S FIRST EVER TMX PLANT

The company has emerged as a strong brand registering steady growth. STEELMAX has adopted the latest technology available globally, to manufacture high-quality TMX steel Bars. STEEELMAX has also been successful in managing the market fluctuations well and is committed to achieving greater excellence with better utilization of resources.