Din2391 Precision Seamless Pipe For Mechanical / Automotive Engineering
Precision Steel Tube Cold Drawn Carbon Seamless Steel Pipe DIN2391 St35 St45 St37.0 St37.4 St52.0 St30Si
Product Description:
New era supply precision steel tubes size from OD 4 mm to OD80 mm,Wall thickness from WT 0.5 mm to WT 10 mm ,Length max 12m ,Could Cut to length for your special requests.Material ST 35,St45,St52 St30Al,St 30Si,Other materials upon agreement with customers.
Standard: DIN2391
Size Range: OD: 4-80mm
WT: 0.5-10mm
Length: 1-12m
Steel Grade: 10#, 20#, 16Mn, ST35, St45, St52
1.Production method:
Cold Drawn on the seamless steel tubes, to reach high accuracy on the OD and WT tolerance
2.Features:
Smooth inner and outer surfaces
Available in a variety of outer diameter sizes
Good raw material quality
Narrow tolerance
3.Deliver condition:
1). BK Cold finished (hard)
2). BKW Cold finished (soft)
3). BKS Cold finished and stress relieved
4). GBK Annealed
5). NBK Normalized
4.Relative standard:
DIN2391 Precision Seamless Steel tubes for precision hydraulic systems
DIN2393 Precision Welded Steel tubes for precision hydraulic systems
5. Steel Grade and Chemical Compositions:
| Grade |
C max |
Si max |
Mn |
P max |
S max |
| ST35 | 0.17 | 0.35 | ≥0.40 | 0.025 | 0.025 |
| ST45 | 0.21 | 0.35 | ≥0.40 | 0.025 | 0.025 |
| ST52 | 0.22 | 0.35 | ≥1.60 | 0.025 | 0.025 |
6.Mechanical properties
| Grade | Condition | Tensile Point(Mpa) | Yield Point(Mpa) | Enlongation |
| ST35 | BK | ≥440 | ≥6% | |
| BKW | ≥370 | ≥10% | ||
| GBK | ≥315 | ≥25% | ||
| NBK | 340-470 | 235 | ≥25% | |
| ST45 | BK | ≥540 | ≥5% | |
| BKW | ≥470 | ≥8% | ||
| GBK | ≥390 | ≥21% | ||
| NBK | 440-570 | 255 | ≥21% | |
| ST52 | BK | ≥590 | ≥5% | |
| BKW | ≥540 | ≥7% | ||
| GBK | ≥490 | ≥22% | ||
| NBK | 490-630 | 355 | ≥22% |
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