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Delivery Condition normalised and tempered/softened
Packging & Delivery
Min Order1 piece
Briefing
Detailed
Grade :34CrAlNi7-10
Number:1.8550
Classification: Nitriding steel
EN 10085: 2001 Nitriding steel. Technical delivery conditions
Diameter : 80 to 600 mm ;
Length : 1000 to 9000 mm ;
1. High Quality, Reasonable Price
2. Over 40 Years Experience
3. ISO NQA Certificated Factory
4. Worldwide shipping
5. 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 |
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℃
1 Hot rolling process
2 Hot Forging: Electro-hydraulic; High-speed-hydraulic; Oil-hydraulic; Precision-forging
1 +A: Annealed (full/soft/spheroidizing)
2 +N: Normalized
3 +NT: Normalized and tempered
4 +QT: Quenched and tempered (water/oil)
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
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)
EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
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