China En10305-2 Welded Cold Drawn Steel Tubes for Precision Application

EN10305-2 Welded cold drawn Steel tubes for precision application

1)EN10305-2 Welded cold drawn Steel tubes
2)O.D.:6-280mm W.T.:1-30mm Length max 16.5m
3)Grade:E155 E195 E235 E275 E355
4)Cold drawn or cold rolled precision seamless steel tubes
inside precision seamless tubes for hydraulic pressure and pneumatic services
5)Application: for Auto industry/for machinery use/Oil Cylinder Tube/Motorcyle shock absorber
Auto shock absorber innder cylinder/Telescopic Cylinders
Chemical composition

Steel GradeCSiMnPSSteel nameSteel numbermaxmaxmaxmaxmaxE1551.00330.110.350.700.0250.025E1951.00340.150.350.700.0250.025E2351.03080.170.351.200.0250.025E2751.02250.210.351.400.0250.025E3551.05800.220.351.600.0250.025

Mechanical properties at room temperatureSteel gradeMinimum values for the delivery conditiona bSteel name(+Cc)(+LCc)(+SR)(+Ad)(+N)Rm MpaA %Rm MpaA %Rm MpaReH MpaA %Rm MpaA %Rm MpaReHe MpaA %E1551.00334006350103502451826028270-41015528E1951.00344206370103702601829028300-44019528E2351.03084906440104403251431525340-48023525E2751.0225560551085103751239021410-55027521E3551.0580640459065904351045022490-63035522

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 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.