AISI 4130 Alloy Steel
AISI 4130 is a low alloy steel used primarily in applications where high strength and durability are required. It has Cr and Mo as the main alloying elements and has excellent strength, hardness and wear resistance.
Chemical composition of AISI 4130:
C | Cr | Mo | Mn | Si | S | P |
0.28 - 0.33 | 0.80 - 1.10 | 0.15 - 0.25 | 0.40 - 0.60 | 0.15 - 0.35 | ≤ 0.040 | ≤ 0.035 |
Mechanical properties:
Performance parameters | Annealing state | Quenched and tempered state |
Tensile strength (MPa) | 560 - 670 | 850 - 1000 |
Yield strength (MPa) | 415 - 470 | 735 - 860 |
Elongation (%) | 20 - 25 | 10 - 15 |
Impact toughness (J) | 55 - 65 | 35 - 45 |
Hardness (HB) | 140 - 200 | 241 - 300 |
Comparison of AISI 4130 and other alloy steels：
Steel Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Hardness (HB) |
AISI 4130 | 850 - 1000 | 735 - 860 | 241 - 300 |
AISI 4140 | 950 - 1050 | 760 - 960 | 280 - 320 |
AISI 4340 | 930 - 1080 | 760 - 850 | 280 - 320 |
ASTM A36 | 400 - 550 | 250 - 400 | 120 - 160 |
AISI 4130 features:
1. High strength: excellent tensile and yield strength, suitable for high load environments.
2. Machinability: suitable for various mechanical processing and heat treatment.
3. Weldability: good welding performance, supporting conventional welding technology.
4. Corrosion resistance: has a certain degree of corrosion resistance, but usually requires surface treatment to enhance protection in corrosive environments.
