Corrosion resistance steel
The controlled thermo mechanical treatment also results in an uniform and thick tempered martensitic rim, completely free from internal stress. This martensitic rim improves the corrosion resistance as well as fatigue strength of the MS TMT Re-bars when compared to other TMT Re-bars.
MS CRS TMT Re-bars have been tested in rigorous corrosion media and evaluated for various corrosion resistance properties as per ASTM standards viz. Alternate immersion test, salt spray test, atmosphere exposure test, sulphur Di Oxide test and Potentiodynamic test.
As per the different types of corrosion test MS CRS TMT Rebars more corrosion resistant than normal TMT Rebars available in the market.
Advantages
1. No additional precaution required in material handling and transportation
2. No additional preparation for storage or working at site
3. No maintenance during fabrication
4. Workable at poor site conditions
5. No extra precaution during welding
Characteristics
| IS 1786:2008 | MS CRS Rebar (CRS) | IS 1786:2008 | MS CRS Rebar (CRS) | |
|---|---|---|---|---|
| Chemical Properties | Fe 550D | Fe 550D | Fe 500D | Fe 500D |
| %Carbon (C) | 0.15(max) | 0.15(max) | 0.15(max) | 0.15(max) |
| Silicon (Si) | – | 0.25(max) | – | 0.25(max) |
| Manganese (Mn) | – | 0.60(min) | – | 0.60(min) |
| Phosphorus (P) | 0.120(max) | 0.080(max) | 0.120(max) | 0.080(max) |
| Sulphur (S) | 0.040(max) | 0.035(max) | 0.040(max) | 0.035(max) |
| Chromium (Cr) | – | 0.30 | – | 0.30 |
| Nickel (Ni) | – | – | – | – |
| Copper (Cu) | – | 0.30 | – | 0.30 |
| Total Alloying Element (Cr, Cu, Ni etc. ) | 0.40(min) | 0.60(min) | 0.40(min) | 0.60(min) |
