European standard EN10025-2 specifies that steel with an "S" prefix is structural steel, and the number 355 following it indicates the yield strength at room temperature is 355 MPa.

European Standard H-beam HE100B, Size 100*100*6*10

European Standard H-beam HE120B, Size 120*120*6.5*11

European Standard H-beam HE140B, Size 140*140*7*12

European Standard H-beam HE160B, Size 160*160*8*13

European Standard H-beam HE180B, Size 180*180*8.5*14

European Standard H-beam HE200B, size 200*200*9*15

European Standard H-beam HE220B, Size 220*220*9.5*16

European Standard H-beam HE240B, size 240*240*10*17

EN 10025 H-beam HE260B, Size .260*260*10*17.5

European Standard H-beam HE280B, Size 280*280*10.5*18

European Standard H-beam HE300B, Size 300*300*11*19

European Standard H-Section Steel HEM120, European Standard H-Section Steel HEM140

European Standard H-beam HEM160, European Standard H-beam HEM180

European Standard H-beam HEM200, European Standard H-beam HEM220

European Standard H-beam HEM240, European Standard H-beam HEM260

European Standard H-beam HEM280, European Standard H-beam HEM300

European Standard H-beam HEM320, European Standard H-beam HEM340

European Standard H-beam HEM360, European Standard H-beam HEM400

European Standard H-beam HEM450, European Standard H-beam HEM500