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Seamless precision steel tube din 2391

Date:2021-06-23View:272Tags:din 2391 St35 St45 St52 Seamless precision steel tube

DIN2391 Part 2 specifies dimensions for cold finished, seamless precision steel tubes and is to be used in conjunction with DIN2391 part2 which states the relevant technical delivery conditions. The preferred sizes listed in standard are mainly used in mechanical and automotive engineering.


The main products of steel / steel grade: DIN2391-1(ST35, ST45, ST52).

Carbon steel tubes for machine structural purposes.


Standard:

DIN2391-1: Seamless Precision Steel Tube.

EN 10305-1: 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


DIN 2391 seamless precision tubes applications – Used in Hydraulic & pneumatic cylinder, Mechanical and Automotive engineering.


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 (%)

 

Si Mn P S
≤0.35 ≥0.40 ≤0.050 ≤0.050
≤0.35 ≥0.40 ≤0.050 ≤0.050
≤0.55 ≥1.60 ≤0.050 ≤0.050


DIN2391-1: MECHANICAL PROPERTIES


Grade BK BKW
RmN/mmmin min RmN/mmmin min
ST35 480 6 420 10
ST45 580 5 520 8
ST52 640 4 580 7

Grade BKS
N/mmmin ReHN/mmmin min
ST35 420 315 14
ST45 520 375 12
ST52 580 420 10

Grade GBK NBK
N/mmmin min N/mmmin ReHN/mmmin min
ST35 315 25 340-470 235 25
ST45 390 21 440-570 235 21
ST52 490 22 490-630 355 22