DIN2391 Seamless Precision Steel Tube

standard specifies the used forMechanical and Automobile.

The main products of steel / steel grade: -1(ST35, ST45, ST52).

for machine structural purposes .

Standard:
DIN2391-1: Seamless Precision .
: Steel tubes for precision applications – Technical delivery conditions – Part 1: Seamless cold drawn tubes.

Size (mm):
Outer Dimensions: 4.0mm – 60.0mm
Wall Thickness: 0.5mm – 8 mm
Length: max 6000mm

Application:motor-car construction, pneumatic and hydraulic operating mechanisms .
Steel grade: DIN2391-1(ST35, ST45, ST52)
Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers requirements.

DIN2391-1: CHEMICAL COMPOSITIONS(%)
Grade C Si Mn P S
ST35 ≤0.17 ≤0.35 ≥0.40 ≤0.050 ≤0.050
ST45 ≤0.21 ≤0.35 ≥0.40 ≤0.050 ≤0.050
ST52 ≤0.22 ≤0.55 ≥1.60 ≤0.050 ≤0.050
DIN2391-1: MECHANICAL PROPERTIES
Grade BK BKW BKS GBK NBK
RmN/mmmin min RmN/mmmin min N/mmmin ReHN/mmmin min N/mmmin min N/mmmin ReHN/mmmin min
ST35 480 6 420 10 420 315 14 315 25 340-470 235 25
ST45 580 5 520 8 520 375 12 390 21 440-570 235 21
ST52 640 4 580 7 580 420 10 490 22 490-630 355 22