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DIN 2391 Hydraulic Cylinder Tube ST52 heavy wall mechanical tubing
St52 steel
Steel Category:Steel for Boilers and Pressure Vessels ,Hydraulic Cylinder
Steel standard:DIN 17135 & DIN 2391
Steel grade:DIN 17135 St52
Dimension: Thickness 5-300mm, Width 1500-3500mm, Length 3000-12000mm
Application:St52 steel grade is one of grade in DIN 17135 , which is non alloy and alloy steels with specified elevated temperature properties. A St 52 grades are used above all for manufacturing boilers, pressure vessels and pipes transporting hot liquids.
Supplementary Technology: HIC Test | NACE MR0175 | Z15 | Z25 | Z35 | S1 | S2 | S3 | S4.1
S5 | S6 | S7 | S8 | S9| S11 | S12 | S14 | S17
St52 steel chemical composition:
|
St52 Chemical Composition | |||||||
Grade |
The Element Max (%) |
||||||
C |
Si |
Mn |
P |
S |
Al(min) |
N |
|
St52 |
0.20 |
0.50 |
0.9-1.70 |
0.03 |
0.025 |
|
0.02 |
Cr |
Cu |
Mo |
Nb |
Ni |
Ti |
V |
|
0.30 |
0.30 |
0.08 |
0.005 |
0.50 |
0.03 |
0.10 |
|
St 52 steel mechanical property:
Grade |
|
St52 Mechanical Property |
|||||
Thickness |
Yield |
Tensilmie |
Elongation |
Impact Energy(KV J) min |
|||
St52 |
mm |
Min Mpa |
Mpa |
Min % |
-20° |
0° |
+20° |
≤ 16 |
355 |
490-630 |
22 |
40 |
47 |
55 |
|
16> to ≤35 |
355 |
490-630 |
22 |
40 |
47 |
55 |
|
35> to ≤50 |
345 |
490-630 |
22 |
40 |
47 |
55 |
|
50> to ≤70 |
325 |
490-630 |
22 |
40 |
47 |
55 |
|
70> to ≤100 |
315 |
470-610 |
21 |
40 |
47 |
55 |
|
100> to ≤150 |
295 |
450-590 |
21 |
40 |
47 |
55 |
|
LCKC STEEL, produces all kinds of seamless pipes with OD from 13.7mm~1220mm. The technology can be hot rolled, cold rolled and cold drawn.
End finish: plain ends with square cuts, free of burrs, bevelled ends.
For bigger size with ID above 300mm, hot rolled+deep hole boring+honing or skiving&roller burnishing will be used.
Manufacture method: Hydraulic cold drawn, deep hole bored+externally machined.
Delivery condition:
| +AR | BKS | GBK | NBK | Q+T |
| As rolled | Stress relieved | Annealed | Normalized | Quenched+tempered |
| Hot rolled | +SR | +A | +N | Q+T |
Internal surface treatment: honing, skiving&roller burnishing
ID tolerance: H7, H8, or as per request.
OD tolerance: as per DIN2391-2 or EN10305-1
W.T tolerance: +/-7.5%
Roughness of internal suface: Ra0.25um Max
Test:Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection, hydraulic testing , X-ray Test.
Alloy Seamless Tube: ASME SA-335 (P5, P9, P11, P22 P91) A213 -T22/T12 etc.
Hollow seamless bar :AISI 4130 ,ASTM 4140 etc.
Carbon steel pipe :ASTM A106 Gr.B
Stainless steel pipe : 304, 316, 316L & H grades etc.
Hollow section :S235JR, S275JR, S355JR, P265GH, P355N
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