AISI 4130 steel is a versatile alloy, with good atmospheric corrosion resistance. As an alloy steel containing chromium and molybdenum as strengthening agents, AISI 4130 has good strength and toughness, weldability and machinability.
AISI 4130 Chemical Composition:
|
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
|
Min |
0.28 |
0.15 |
0.4 |
• |
• |
0.8 |
0.15 |
|
Max |
0.33 |
0.35 |
0.6 |
0.035 |
0.04 |
1.1 |
0.25 |
AISI 4130 Mechanical Properties:
|
Properties |
Metric |
Imperial |
|
Tensile strength, ultimate |
560 MPa |
81200 psi |
|
Tensile strength, yield |
460 MPa |
66700 psi |
|
Modulus of elasticity |
190-210 GPa |
27557-30458 ksi |
|
Bulk modulus (Typical for steel) |
140 GPa |
20300 ksi |
|
Shear modulus (Typical for steel) |
80 GPa |
11600 ksi |
|
Poissons ratio |
0.27-0.30 |
0.27-0.30 |
|
Elongation at break (in 50 mm) |
21.50% |
21.50% |
AISI 4130 Applications:
This low-alloy steel finds many applications as forgings in the aerospace and oil and gas industries – as forged valve bodies and pumps, as well as in the automotive, agricultural and defense industries.
AISI 4130 Weldability:
Weldability of 4130 is good, and the alloy may be welded using any commercial method. The material may require a post-weld stress relief heat treatment in certain instances. Low-hydrogen electrodes are recommended together with preheat at 300 – 500 º F (150 – 260 º C.) to be maintained during welding, Cool slowly and stress relieve where possible.
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