Torich International Limited |
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EN10305-2 Welded Precision Cold Drawn Steel Tubes
Applications: for Auto industry/for machinery use/Oil Cylinder Tube/Motorcyle shock absorber Auto shock absorber innder cylinder/Telescopic Cylinders
Dimension:O.D.:6-350mm W.T.:1-35mm L:max12000mm
Characteristic:High preicision 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 |
a Rm: 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 calclulation purposes the following relation is
recommended:ReH≥0.5Rm
e For tubes with outside diameter ≤30mm and wall thickness ≤3mm the
ReH minimim values are 10Mpa lower than the values given in this
Table
Note: Special steel grade is also available, according to customer
request.
For Application of: