Product Name: Precision Seamless Steel Tubes DIN 2391
Material: ST 35, ST 45, ST 52
Application: For Auto use, 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.: 1-30 L: Max 12000
Delivery condition: Hot rolled, Cold worked, Annealed, Normalized, Stress Released
Certificate: ISO9001 TUV
Packing:
1. Standard export bundle wrapped with strong steel strip
2. Wooden case
3. Nylon packed
Payment: T/T
Delivery: With 40 days of order confirmation
Your special requirement is highly welcomed and will be fulfilled.
We always provide highest quality seamless pipe/tube and best service.
| Grade | ChemicalComposition( % ) | ||||
| 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 |
Mechanical Properties (Mpa):
| Steel grade | cold drawing lucencyhardness BK | cold drawing lucencyhardness BKW | drawing lucency stress free anneal BKS | Anneal GBK | Normalization NBK | |||||||
| Tensile Strength Rm N/mm min | Elongation % min | Tensile Strength Rm N/mm min | Elongation % min | Tensile Strength Rm N/mm min | Yield Strength ReH N/mm min | Elongation % min | Tensile Strength Rm N/mm min | Elongation % min | Tensile Strength Rm N/mm min | Yield Strength ReH N/mm min | Elongation % min | |
| St35 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 25 | 340-470 | 235 | 25 |
| St45 | 580 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440-570 | 235 | 21 |
| St52 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 | 490-630 | 355 | 22 |
