Hot-rolled H-shaped profile steel and production method thereof

The invention relates to hot-rolled H-shaped profile steel and a production method thereof. The profile steel comprises the following chemical components in percentage by weight: 0.07%-0.15% of carbon, 0.15%-0.35% of silicon, 1.00%-1.45% of manganese, not greater than 0.020% of phosphorus, not greater than 0.015% of sulphur, 0.020%-0.060% of vanadium, 0.010%-0.060% of niobium and not smaller than 0.015% of Als; the production method comprises the following steps: smelting in a converter; blowing an argon station; carrying out LF (low-frequency) refining; casting; rolling. According to H-shaped profile steel with the specification of 428*407*20*35 produced by a production method of low-temperature ductile hot-rolled H-shaped profile steel of minus 50 DEG C, the low-temperature ductility at minus 50 DEG C exceeds 167J; the low-temperature ductile hot-rolled H-shaped profile steel has extremely low ductile-to-brittle transition temperature and good low-temperature ductility; the product quality is improved.