DIN1628 St 44.4 welded steel pipe surface treatment
DIN1628 St 44.4 welded steel pipe chemical composition
Chemical composition |
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|
Steel grade |
Type of deoxidation (RR.fully killed) |
Chemical composition, % by mass |
Addition of nitrogen fixing elements (e.g.no less than 0.020% Al total) |
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|
Symbol |
Material number |
C |
Si |
Mn |
P |
S |
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|
max |
max |
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|
St 44.4 |
1.0257 |
RR |
0.20 |
0.35 |
>=0.35 |
0.040 |
0.040 |
Yes |
DIN1628 St 44.4 welded steel pipe mechanical property
Steel grade |
Upper yield stress Reh for wall thickness in mm |
Tensile strength Rm N/mm2 |
Elongation after fracture A5 |
Impact energy ISO V-notch test pieces at+20°C |
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|
Symbol |
Material number |
Up to 16 |
16-40 |
40-65 |
longitudinal |
transverse |
longitudinal |
transverse |
|
|
N/mm2 min |
% min |
/ min |
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|
St 44.4 |
1.0257 |
275 |
265 |
255 |
420 to 550 |
21 |
19 |
43 |
27 |
DIN1628 St 44.4 welded steel pipe size
LSAW from 219.1mm to 3200mm, thickness from 5mm to 25.4mm
Ends: Beveled ends with protector
DIN1628 St 44.4 welded steel pipe surface
Bare / Varnish coating / FBE, 3PE coating DIN30670 / or by client option
DIN 1628 Spiral welded steel pipelines, containers and apparatuses for the highest operational temperatures of 320°C and the highest permitted operational stress limitless.
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