Steel Grade ST45.8 Hydraulic Cylinder Tubes, applicable to machinery, hoists, automotive and transport lifting equipment, waste disposal transport, food processing equipment, mechanical tools and equipment, compressors and earth moving equipment etc. like hydraulic pressure, pneumatic cylinder,oil pump barrel.


Chemical Composition

Steel Grades C% max
Si% max
Mn% max
P% max
S% max
St 45.8 0.21
0.10-0.35
0.40-1.20
0.040
0.040

Mechanical Properties 

Steel Grades

Tensile strength Rm

(Mpa)

Yield limit for walls in mm max
Elongation at break (Lo=5do) max
Resilience work of the transverse DVM sample J max

≤16

16-40 40-60
Mpa
Mpa
Mpa 1 t
St 45.8 410-530 255 245 235 21 19 27