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Help CenterDIN 2391 EN 10305 Precision Seamless Steel Tube Grade E355 St52
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Precision tubes EN 10305
Precision steel tubes are characterized by:
- special dimensional accuracy of outer and inner diameters or wall thickness
- smooth surface resulting from drawing technology
- defined mechanical properties
- large dimensional variety
We have in our warehouse offer the following precision tubes:
DIN 2391-1/EN 10305-1 | |
GB/T 3639 Cold drawn or cold rolled precision seamless steel tubes | |
Application: |
for Atuo usd for machinery use; Oil cylinder tube; Motorcycle shock reducer steel tubes; Auto shock reducer inner cylinder |
Size(mm): |
O.D.:6.0-224.0 W.T.:1-15 L:max 12000 |
Grade and Chemical Composition(%):
Grade |
Chemical Composition(%) |
||||
C max |
Si max |
Mn |
P max |
S max |
|
St 35 |
0.17 |
0.35 |
≥0.40 |
0.025 |
0.025 |
St 45 |
0.21 |
0.35 |
≥0.40 |
0.025 |
0.025 |
St 52 |
0.22 |
0.55 |
≤1.60 |
0.025 |
0.025 |
Steel grade |
Chemical Composition(%) |
||||||
Steel name |
Steel number |
C max |
Si max |
Mn |
P max |
S max |
Al min |
E215 |
1.0212 |
0.10 |
0.05 |
0.70 |
0.025 |
0.025 |
0.025 |
E235 |
1.0308 |
0.17 |
0.35 |
1.20 |
0.025 |
0.025 |
- |
E355 |
1.0580 |
0.22 |
0.55 |
1.60 |
0.025 |
0.025 |
- |
Mechanical Properties(Mpa)
Steel grade |
|
|
|
GBK |
NBK |
||||||
|
Tensile Rm |
Elongation % |
Tensile Rm |
Elongation % |
Tensile Rm |
Yield |
Elongation % |
Tensile Rm |
Elongation % |
Yield |
|
|
St35 |
480 |
6 |
420 |
10 |
420 |
315 |
14 |
315 |
25 |
235 |
25 |
St45 |
580 |
5 |
520 |
8 |
520 |
375 |
12 |
390 |
21 |
235 |
21 |
St52 |
640 |
4 |
580 |
7 |
580 |
420 |
10 |
490 |
22 |
355 |
22 |
Steel grade |
Minimum values for the delivery condition |
||||||||||||
Steel name |
Steel number |
+ C |
+ LC |
+ SR |
+ A |
+ N |
|||||||
Rm Mpa |
A% |
Rm Mpa |
A% |
Rm Mpa |
ReH Mpa |
A% |
ReH Mpa |
A% |
Rm Mpa |
ReH Mpa |
A% |
||
E215 |
1.0212 |
430 |
8 |
380 |
12 |
380 |
280 |
16 |
280 |
30 |
290-430 |
215 |
30 |
E235 |
1.0308 |
480 |
6 |
420 |
10 |
420 |
350 |
16 |
315 |
25 |
340-480 |
235 |
25 |
E355 |
1.0580 |
640 |
4 |
580 |
7 |
580 |
450 |
10 |
450 |
22 |
490-630 |
355 |
2 |
seaworthy packing, in bundles, worth wooden cases, standard packing or up to your requirement.
| seamless cold-drawn - EN 10305-1 (DIN 2391-1+2) | ||||||||||
| application: | automotive industry, machine and equipment building | |||||||||
| grade: |
|
|||||||||
| delivery state: | + C (BK drawn for shine/hard) + N (NBK normalized) |
|||||||||
| trade length: | 4.000 up to 7.000 mm | |||||||||
| outer diameter: | Ø 4,0 up to 165,0 mm | |||||||||
| wall thickness: | 0,5 mm up to 10,0 mm |
|||||||||
| seamless cold-drawn HPL - EN 10305-4 (DIN 2391 / C+DIN 1630+DIN 2445-2) | |||||||
| application: | hydraulic and pneumatic elements | ||||||
| grade: |
|
||||||
| delivery state: | + N (NBK normalized) | ||||||
| surface: | phosphatized, non-phosphatized, electrolytic zinc coated and chromated types: yellow or blue-white |
||||||
| trade length: | 6.000 up to 6.050 mm | ||||||
| outer diameter: | Ø 4,0 up to 75,0 mm | ||||||
| wall thickness: | 0,5 up to 12,5 mm | ||||||
| marking: | running marking along whole tube | ||||||
| additional test: | eddy current test | ||||||
Liaocheng City Kuncheng Steel Pipe Co., Ltd.
we are professional and experienced supplier of steel products in china. We will provide you with high quality and low price, and we also offer good service. If our products can meet your needs, please contact us freely. We are looking forward to cooperating with you, and welcome your inquiry!
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