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DIN 2395-1 Rectangular And Square Electric Welded Precision Steel Tubes

DIN 2395-1 Rectangular And Square Electric Welded Precision Steel Tubes

his Standard specifies the technical conditions of delivery for rectangular and square welde precision steel tubes according to DIN 2395 Part 1 made of the steel grades listed insection 5. Tubes in accordance with this Standard are manufactured by cold forming andelectric resistance pressure welding. This Standard does not apply to hollow sections for structural steel engineering according to DIN 59 411.

Description

DIN 2395-1 Rectangular And Square Electric Welded Steel Pipe


Chemical composition

Code number for materialChemical composition %
C maxP max
S maxN maxSi maxMn maxAl
UST37.20.21 
0.065 0.065 0.009--

RST37.20.190.060 0.0600.010--
ST37.30.19 0.050 0.050---
ST44.20.24 0.060 0.0600.010--
ST44.30.23 0.050 0.050---
M220.16-0.230.040 0.040-0.280.40-0.75
QSTE340N0.18 0.035 0.035-9.531.56 

Mechanical property

Code 

number for

 material

Mechanical properties for condition on delivery

NBK(nominalized)

BKM

(welded and sized)


Tensile strength Rm N/mm²

Yield point ReH N/mm²

 min

Elongation at rupture A5% min
Tensile strength Rm N/mm²

Yield point ReH N/mm²

min

Elongation at rupture A5% min
UST37-2360-47023523390250
7
RST37-2
ST37-3
ST44-2430-540275
214602906
ST44-3
M22420min29025---
QSTE340N460-58034027---






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