Steel for equipment in hydrogen service

The invention provides steel for equipment in hydrogen service. The steel is characterized by comprising the following chemical components in percentages by weight: 0.07-0.10% of C, less than or equal to 0.10% of Si, 0.30-0.50% of Mn, 2.00-2.50% of Cr, 0.90-1.10% of Mo, 0.02-0.05% of V, 0.10-0.30% of Ti, less than or equal to 0.007% of P, less than or equal to 0.003% of S, 0.02-0.04% of Als, 0.06-0.20% of RE, and the balance of Fe and inevitable impurities. Dispersively distributed carbide can be formed in the steel for the equipment in hydrogen service, harmful impurity elements in the steel can be eliminated greatly, and a steel plate produced by the steel for the equipment in hydrogen service has relatively low temper brittleness, still has good conventional and high-temperature mechanical properties under the condition of relatively low carbon content, and has excellent hydrogen embrittlement resistance and hydrogen attack resistance.