Grade :34CrAlNi7-10
Number:1.8550
Classification: Nitriding steel
Standard:
EN 10085: 2001 Nitriding steel. Technical delivery conditions
Our supply size :
Diameter : 80 to 600 mm ;
Length : 1000 to 9000 mm ;
Our advantage :
- High Quality, Reasonable Price
- Over 40 Years Experience
- ISO NQA Certificated Factory
- Worldwide shipping
- Emergency Orders and Fast Delivery
Chemical composition % of steel 34CrAlNi7-10 (1.8550)
| C | Si | Mn | Ni | P | S | Cr | Mo | Al |
| 0.3 – 0.37 | max0.4 | 0.4 – 0.7 | 0.85 – 1.15 | max0.025 | max0.035 | 1.5 – 1.8 | 0.15 – 0.25 | 0.8 – 1.2 |
Mechanical properties of grade 1.8550 DIN EN 10085
| Proof strength | Tensile strength | Impact energy | Elongation at fracture | Reduction in cross section on fracture | As-Heat-Treated Condition | Brinell hardness (HBW) |
| Rp0.2 (MPa) | Rm (MPa) | KV (J) | A (%) | Z (%) | ||
| 946 (≥) | 311 (≥) | 44 | 31 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 131 |
Introduce
1.8550 is intended for work at elevated temperatures in an environment that requires high sliding properties, corrosion, temperature, abrasion, and fatigue resistance. Steel with the addition of Nickel and Aluminum used in the energy, machinery, and automotive industries for large cross-sections elements in the heat treated condition. The products are used in the manufacture of screws, rods, cylinders, pistons, gears, extruders, and rings, which do not require welding.
Heat treatment of 34CrAlNi7-10, 1.8550:
Softening annealing at a temperature of 650 – 700 ℃ Hardening at 870 – 930 ℃ for at least half an hour with cooling in water or oil Tempering at 580 – 700℃ for a minimum of 700 hour Nitriding at a temperature of 480 – 570℃
Forming Option
1 Hot rolling process
2 Hot Forging: Electro-hydraulic; High-speed-hydraulic; Oil-hydraulic; Precision-forging
Heat-treatment Option
1 +A: Annealed (full/soft/spheroidizing)
2 +N: Normalized
3 +NT: Normalized and tempered
4 +QT: Quenched and tempered (water/oil)
Surface Option
1 Black Surface
2 Grounded: Bright but rough ; Not precision
3 Machining for plate: Bright and precision; Little turning scar
4 Peeled/Turned: Bright and precision; Little turning scar
5 Polished: Very Bright and precision size; Not turning scar
Other Services
1 Cutting: Small pieces
2 CNC Machine: Produce as your drawing
3 Package: Bare/Nylon/Canvas/Wooden
4 Payment:T/T, L/C, O/A(request credit)
5 Transport:FOB/CFR/CIF/DDU/DDP (train/ship/Air)
Mill test certificate
EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
