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EN 10305-1 E215
EN 10305-1 E235
EN 10305-1 E255
EN 10305-1 E355
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EN 10305-1 Steel tubes for precision applications Part 1: Seamless cold drawn tubes
Standard: EN 10305-1
Equivalent Standards: NF 699, DIN 2391, ASTM A519, GOST 9567-75, NBR 8476, BS 6323 Part 4, NF A 49-330-85, BS 6323-4, NF A 49-310, UNI 6403
Material: E255, 1.0408
Equivalent Materials: St45, St45.8, 20, 1020, S255GT
Chemistry Composition
C, %
Si, %
Mn, %
P, %
S, %
0.21 max
0.35 max
0.40-1.10
0.025 max
0.025 max
Mechanical Properties
Tensile Strength , MPa
Yield Strength, MPa
Elongation, %
Delivery Condition
580 min
-
5 min
+C
520 min
-
8 min
+LC
520 min
375 min
12 min
+SR
390 min
-
21 min
+A
440-570
255 min
21 min
+N
EN 10305-1 specifies the technical delivery conditions for seamless cold drawn steel tubes of circular cross section for precision applications. It can also cover other types of cross section. Tubes according to EN 10305-1 are characterized by having precisely defined tolerances on dimensions and a specified surface roughness. Typical fields of application are in the vehicle, furniture and general engineering industries.
Manufacture: the tubes shall be manufactured from hot finished seamless tubes by cold drawing or other suitable processes.
Delivery Condition: cold drawn (hard) as +C, cold drawn (soft) as +LC, cold drawn and stress relieved as +SR, annealed as +A, normalized as +N.
Inspection & Test: chemistry composition analysis, tensile test, flattening test, flaring test, NDT, surface inspection and dimension check.
Length: 5800mm; 6000mm; 10000mm; 11800mm; and so on.
Further process: cutting into short length, deformation, coating.
Keyword: precision steel tube, EN 10305-1, precision steel pipe, high precision, cng tube, HPL Tube
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