There are several benefits of using cold drawn steel components. Not only do they have an attractive surface, but the din2391 cold drawn high precision seamless tube is also almost 20 per cent tougher in comparison to a conventional hot rolled steel product. A cold working process performed on the material rallies the dimensional tolerances of the ST45 DIN 2391 Carbon Steel Welded Tubes, along with other properties like its straightness, while also intensifying the physical properties of the steel.
Grade ST 45 is essentially a medium carbon steel material that exhibits tensile strength properties that are modest at best. The material can be manoeuvred by processes such as hardening by means of quenching and tempering.
These processes are performed on both the focused and restricted areas of ST45 DIN 2391 Carbon Steel Seamless Pipes. The material could also be stimulated with induction hardening, wherein the end product could eventually improve its hardness property to a level of about HRC 55. The DIN 2391 ST45 Carbon Steel Pipes in major instances, could be delivered in an unattended heat treatment state. Or in simple words, most of the times, these pipes tend to have a normalized delivery condition. However, if required by the buyer, the DIN 2391 St45 Seamless Precision Steel Tubes could be supplied in numerous heat treatment variations. On some occasions, if the application demands it, manufacturers could furnish this particular carbon steel material with minor changes with regards to its chemistry.
Machinability of grade DIN 2391 ST45 Pipes is comparable to that of mild steel products such as grade CR1. On the other hand, the weldability of grade ST 45 is much lower than that exhibited by mild steel.
| Standard | DIN 2391 |
| Grade | ST45 |
| Size | OD (4-190mm) x WT (0.5-15mm) |
| Outer Dimensions | 4.0mm – 60.0mm |
| Wall Thickness | 0.5mm – 8 mm |
| Length | max 6000mm |
|
Cold drawn(Mandatory) |
Cold drawn(Soft) |
Cold Drawn and Stress Release |
Anneal |
Normalizing |
||||||||
|
BK1） |
BKW1） |
(BKS) |
(GBK)1） |
(NBK)1） |
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|
Grade |
Tensile |
Elongation |
Tensile |
Elongation |
Tensile |
Yield point |
Elongation |
Tensile |
Elongation |
Tensile |
Yield point |
Elongation |
|
N/mm2 |
% |
N/mm2 |
% |
N/mm2 |
N/mm2 |
% |
N/mm2 |
% |
N/mm2 |
N/mm2 |
% |
|
|
St45 |
580 |
5 |
520 |
8 |
520 |
375 |
12 |
390 |
21 |
440~570 |
255 |
21 |
|
OD Tolerance |
4-30mm |
31-40mm |
41-50mm |
51-60mm |
61-70mm |
71-80mm |
81-90mm |
91-100mm |
|
±0.08mm |
±0.15mm |
±0.20mm |
±0.25mm |
±0.30mm |
±0.30mm |
±0.40mm |
±0.45mm |
|
|
WT Tolerance |
±10% |
|||||||
| Standard | Grade | C | Si | Mn | P max | S max |
| DIN2391 | St45 | ≤0.21 | ≤0.35 | ≥0.4 | 0.025 | 0.025 |
