EN10305-2 Welded Precision Cold Drawn DOM Steel Tube for Motorcycle Shock Absorbers
EN10305-2 DOM Pipe for Motorcycle Shock Absorbers
EN10305-2 Welded Precision Cold Drawn Steel Tubes
Applications: for Auto industry/for machinery use/Oil Cylinder Tube/Motorcycle shock absorber
Auto shock absorber inner cylinder/Telescopic Cylinders
Size range: O.D.:6-350mm W.T.:1-35mm L:max12000mm
Characteristic:High precision with smooth ID tolerance and roughness
Steel Grade and Chemical Compositions
Steel Grade C Si Mn P S
Steel name Steel number max max max max max
E155 1.0033 0.11 0.35 0.70 0.025 0.025
E195 1.0034 0.15 0.35 0.70 0.025 0.025
E235 1.0308 0.17 0.35 1.20 0.025 0.025
E275 1.0225 0.21 0.35 1.40 0.025 0.025
E355 1.0580 0.22 0.35 1.60 0.025 0.025
Mechanical properties at room temperature
Steel Grade Minimum values for the delivery conditiona b
Steel Name (+Cc) (+LCc) (+SR) (+Ad) (+N)
Rm Mpa A % Rm Mpa A % Rm Mpa ReH Mpa A % Rm Mpa A % Rm Mpa ReHe Mpa A %
E155 1.0033 400 6 350 10 350 245 18 260 28 270-410 155 28
E195 1.0034 420 6 370 10 370 260 18 290 28 300-440 195 28
E235 1.0308 490 6 440 10 440 325 14 315 25 340-480 235 25
E275 1.0225 560 5 510 8 510 375 12 390 21 410-550 275 21
E355 1.0580 640 4 590 6 590 435 10 450 22 490-630 355 22
aRm: tensile strength; ReH: upper yield strength; A: elongation after fracture
b 1Mpa=1N/mm2
c Depending on the degree of cold work in the finishing pass the yield strength may nearly be as high as the tensile strength.
For calculation purposes the following relations are recommended:
for delivery condition +C: ReH ≥0.8 Rm
for delivery condition +LC: ReH ≥0.7 Rm
d For calculation purposes the following relation is recommended:ReH≥0.5Rm
e For tubes with outside diameter ≤30mm and wall thickness ≤3mm the ReH minimum values are 10Mpa lower than the values given in this Table
Note: Special steel grade is also available, according to customer request.
