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DIN st52.4 de tubo de acero inconsútil

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tubo de acero inconsútil de la st52.4 DIN


Din 1629 seamless steel pipe Chemical Composition and Chemical Property

1 DIN 1629 applies to seamless circular tubes and pipes made of unalloyed steels

2 Material: ST37.0 ST44.0 ST52.0

3 OD: 6mm to 325mm (up to 12")

4 thickness: 1mm to 50mm

5 length: up to 12 meters

6 these tubes are predominantly used in the construction of chemical plant, vessels,

pipe work and for general mechanical engineering purpose

7 DIN number of dimensional standard DIN2448

8 manufacturer process hot or cold rolling, hot pressing or hot and cold drawing

9 marking: we will be clearly and durably marked at one end, as follows

A manufacturer's mark

B symbol identifying the steel grade

C seamless type tube

D inspector's mark





din 1629 Chemical Composition
Grade C Si Mn P S Cr Ni Cu
St37 ≤0.17 0.17~0.37 0.35~0.65 ≤0.025 ≤0.020 ≤0.25 ≤0.25 ≤0.20
St45 ≤0.21 0.17~0.37 0.50~0.80 ≤0.025 ≤0.020 ≤0.25 ≤0.25 ≤0.20
St52 ≤0.22 ≤0.55 ≤1.60 ≤0.025 ≤0.020 ≤0.25 ≤0.25 ≤0.20
St55 0.33~0.41 0.17~0.37 0.50~0.80 ≤0.025 ≤0.020 ≤0.25 ≤0.25 ≤0.20
CK45 0.42~0.50 0.17~0.37 0.50~0.80 ≤0.025 ≤0.020 ≤0.25 ≤0.25 ≤0.20






din 1629 Mechanical Property
Grade Tensile Strength(MPa) Yield Strength(MPa) Elongation(%)
Wall Thickness(mm)
≤16 >16
St37 350~480 ≥235 ≥225 ≥25
St45 420~550 ≥275 ≥265 ≥21
St52 500~650 ≥355 ≥345 ≥21
St55 540~645 ≥295 ≥285 ≥17
CK45 590~730 ≥335 ≥325 ≥14









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