AISI 4140 alloy is a low steel alloy whose chemical composition includes chromium, molybdenum and manganese. Its chemical composition contains manganese, which increases the toughness of AISI 4140 pipe, while chromium and molybdenum impart ductility. Other properties of this alloy grade include hardenability and high tensile strength, with a value of 655 MPa. AISI 4140 pipe has high impact resistance, high fatigue strength, excellent torsional strength, excellent toughness and very good wear resistance. Today, we will briefly introduce 4140 alloy steel pipe in this article.
AISI 4140 Alloy Steel Pipe Grade Heat Treatment:
|
Annealing |
800 oC – 850 oC |
|
Normalizing |
870 oC – 900 oC |
|
Tempering |
550 oC – 700 oC |
AISI 4140 Alloy Steel Pipe Equivalent:
|
Standard/ Grade |
UNS |
Temper |
Specification |
|
AISI 4140 Alloy Steel |
UNS G41400 |
A, N, T |
AMS6381 |
Physical Strength of AISI 4140 Alloy Steel Pipe:
|
Properties |
Metric |
Imperial |
|
Density |
7.85 g/cm3 |
0.284 lb/in³ |
|
Melting point |
1416°C |
2580°F |
Chemical Composition % of A519 4140 Alloy Steel Pipe:
|
Element |
Content (%) |
|
Iron, Fe |
96.785 - 97.77 |
|
Chromium, Cr |
0.80 - 1.10 |
|
Manganese, Mn |
0.75 - 1.0 |
|
Carbon, C |
0.380 - 0.430 |
|
Silicon, Si |
0.15 - 0.30 |
|
Molybdenum, Mo |
0.15 - 0.25 |
|
Sulfur, S |
0.040 |
|
Phosphorous, P |
0.035 |
Physical Properties of AISI 4140 Alloy Steel Pipe:
|
Properties |
Metric |
Imperial |
|
Density |
7.85 g/cm3 |
0.284 lb/in³ |
|
Melting point |
1416°C |
2580°F |
Tests of AISI 4140 Alloy Steel Pipe:
- Mechanical test
- Pitting resistance test
- Chemical analysis
- Flaring test
- Hardness test
- Flattening test
- Ultrasonic test
- Macro/micro test
- Radiography test
- Hydrostatic test
United Steel Industry As the most important steel pipe manufacturer and exporter in China, in the past 20 years, we have completed more than 100 projects, with partners in more than 100 countries, and established relationships with oil and gas and EPC companies in many countries business relationship.
For more information about the product price, catalog and rolling mill inspection certificate,
please consult:Email:Sales@usisteels.com
