IS 15454:2004 is the Indian Standard (BIS) for methods of testing for hot rolled steel rails for railway track. This standard specifies the methods for conducting mechanical and non-destructive tests on hot-rolled steel rails used for railway tracks. It details procedures for tensile, impact (falling weight), hardness, macrostructure, and ultrasonic examination to ensure the rails meet quality, strength, and safety requirements.
Prescribes methods for testing the mechanical properties and metallurgical characteristics of hot rolled steel rails.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Falling Weight Test Support Span | 1.0 metre for standard gauge rails (as per product spec IRS T-12) | 1.0 metre | EN 13674-1 |
| Brinell Hardness Test Load/Indenter | 29.42 kN (3000 kgf) load with 10 mm ball | 29.42 kN (3000 kgf) load with 10 mm ball | EN 13674-1 |
| Hydrogen Content Test Method | Carrier Gas Hot Extraction Method | Carrier Gas Hot Extraction Method (Inert gas fusion) | EN 13674-1 |
| Tensile Test Specimen Location | From the rail head, as per relevant material specification (e.g., IRS T-12) | From a specified position in the centre of the rail head | EN 13674-1 |
| Macro-Etch Test Reagent | Hot aqueous solution of Hydrochloric acid (1:1 with water) | Hot aqueous solution of Hydrochloric acid (1:1 with water) | EN 13674-1 |
| Ultrasonic Testing Reference Reflector (typical) | Flat-bottomed holes (FBH) of specified diameters (e.g., 2.0 mm, 3.0 mm) | Flat-bottomed holes (FBH), typically 2.0 mm for qualifying tests | EN 13674-1 |