EN10297 E470 Steel Pipe
Applications:
E470 Steel Pipe parts for the automotive, oil and gas, construction, general engineering and agricultural industry, such as bushes, hydraulic cylinders, hollow shafts, rings, hollow rolls for conveyors, nuts, gear wheels, shafts, axles, stuffing boxes, spindles, drill jigs, rolls etc.
Size Ranges:
1. Outside Diameter: 51-760mm
2. Wall Thickness: 4-120mm
3. Length: as you required.
Steel Grade Comparison:
| EN 10297 | UNS | BS 6258 | BS 4360 | F A49312 |
| E470 | K01907 | Grade 600 | GR 55 | 20MV6 |
Chemical Composition(%):
| C | Mn | Si | P | S | Al | N | Nb | V |
| 0.16-0.22 | 1.30-1.70 | 0.10-0.50 | 0.030 max | 0.015-0.050 | 0.10 min | 0.02 max | 0.07 max | 0.08-0.15 |
Mechanical Properties( T=20°C if not differently stated )
| Wall Thickness(mm) | Tensile Strength Rm (Mpa) | Yield Strength R2 (Mpa) | Elongation in the longitudinal direction A5 (%) |
| 16 max | 650 min | 470 min | 17 min |
| 16-25 | 620 min | 460 min | 17 min |
| 25-40 | 600 min | 430 min | 17 min |
| 40-50 | 550 min | 430 min | 17 min |
| 50-70 | 550 min | 400 min | 17 min |
Pipe Body Heat Treatment:
- Hardening: Heat to 870 oC –925 oC as required, hold until the temperature is uniform throughout the section, soak 10 –15 minutes per 25mm of section and quench in oil or water as required.Temper immediately while still hand warm.
- Tempering: Re heat to 500 oC – 600 oC as required, hold until temperature is uniform throughout the section, soak for 1 hour per 25mm of section. Cool in still air.
- Normalizing: Heat to 900 oC – 925 oC, hold until temperature is uniform throughout the section, soak for 30 minutes and cool in still air.
- Stress Relieving: Heat the weld area to 550 oC – 650 oC, soak for 30 minutes and cool in still air or furnace.
