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 PER ASTM A29
| GRADE | C | Si | Mn | P | S | Cr | Mo |
| 4150 | 0.48-0.53 | 0.15-0.35 | 0.75-1.00 | ≤ 0.035 | ≤ 0.040 | 0.80-1.10 | 0.15-0.25 |
AISI 4150 STEEL MECHANICAL PROPERTY
| Diameter d mm | ≤ 16 | 16-40 | 40-100 | 100-160 | 160-250 |
| Thickness t mm | < 8 | 44793 | 20-60 | 60-100 | 100-160 |
| Yield Strength Mpa | ≥900 | ≥780 | ≥700 | ≥650 | ≥550 |
| Tensile Strength Mpa | 1100-1300 | 1000-1200 | 900-1100 | 850-1000 | 800-950 |
| Elongation, % | ≥9 | ≥10 | ≥12 | ≥13 | ≥13 |
| Reduction of area ,% | ≥40 | ≥45 | ≥50 | ≥50 | ≥50 |
| impact,J | ≥30 | ≥30 | ≥30 | ≥30 | |
| Hardness,HB | 331-380 | 298-359 | 271-331 | 253-298 | 240-286 |
Standard
ASTM A29
ASTM A322
Introduce
4150 steel also sold under the name AISI/SAE 4150, is a medium/high-carbon alloy steel that contains chromium and molybdenum. 4150 steel is known for its increased hardenability and mechanical properties. The machinability of 4150 steel bar is better in the annealed form. This tough steel alloy offers uniform strength, wear resistance, and great hardness. It is important to note that Alloy Steel 4150 must be heat-treated to be suitable for machining. The weldability of Alloy Steel 4150 is high and can be achieved through most commercial methods. The finest of grain size relates directly with the temperature of forging.
Application
Alloy Steel 4150 is used in the aerospace, defense, oil and gas, and automotive industries for products such as:
Shafts
Valves
Sprockets
Aerospace parts
Axles
Spindles
Forged gears
HEAT TREATMENT
Soft Annealing
Heat the steel to 680-720°C uniformly and slowly
hold suitable time for the steel to be thoroughly heated
cool slowly in furnace
maximum Brinell hardness of 248.
Normalizing: 840-860°C,cool in air
Hardening:820 – 860°C,oil quench
Tempering:540-680°C,cool in air
HARDNESS AFTER HEAT TREATMENT
Annealed at 815°C: 197 HB
Normalized at 870°C: 321 HB
Oil quenched, fine grained, tempered at 205°C: 530 HB
Oil quenched, fine grained, tempered at 315°C: 495 HB
Oil quenched, fine grained, tempered at 425°C: 440 HB
Oil quenched, fine grained, tempered at 540°C: 370 HB
Oil quenched, fine grained, tempered at 650°C: 290 HB
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.
