AISI 4419 Molybdenum Alloy Steel Chemical Composition, Grade, Charts and Document
AISI 4419 is a popular low-alloy steel renowned for its unique high tensile strength and toughness, due to the presence of a molybdenum compound. Usually its structural system consists of chemical elements which are carbon, manganese, chromium, molybdenum, silicon, phosphorus, sulfur, and traces of some others. The said alloy, proven to possess excellent hardenability and abrasion resistance, corresponds well with challenging operations in the aircraft industry, automotive engine manufacturing, and machine assembly. Grade specification adhere to the American Iron and Steel Institute (AISI) standards such that the quality and consistency in performance do not discriminate. Extensive charts, table and specifications are at hand, describing its mechanical properties, heat treatment, and applications, allowing informed material selection and engineering choices that can be applied in various industries.
AISI 4419 Alloy Steel Chemical Composition And Grade Table
The AISI 4419 alloy steel is a low-carbon steel with high strength and toughness features. Its chemical composition uniquely includes carbon, manganese, silicon, chromium, molybdenum and nickel; in precise proportions to give desired mechanical properties. Following the pattern of grade table, AISI 4419 alloy steel is constructed based on the chemical composition and corresponding grades for it. Thus, engineers and metallurgists can determine the suitable material for the certain purposes. Being an alloy steel with high strength-to-weight ratio, coupled with excellent wear and corrosion resistance, AISI 4419 alloy steel is the preferred choice of industries such as the automotive, aerospace, and industrial manufacturing sectors.
| Elements | Iron (Fe) | Manganese (Mn) | Molybdenum (Mo) | Silicon (Si) | Carbon (C) | Sulfur (S) | Phosphorus (P) |
|---|---|---|---|---|---|---|---|
| Min (%) | 98.1 | 0.45 | 0.45 | 0.15 | 0.18 | - | - |
| Max (%) | 98.8 | 0.65 | 0.6 | 0.35 | 0.23 | 0.04 | 0.035 |
Advantages and Disadvantages of AISI 4419 Molybdenum Alloy Steel
High Hardenability: Demonstrates outstanding carburization characteristics.
Good Wear Resistance: Displays strong resistance to wear and abrasion.
Elevated Temperature Strength: Retains mechanical properties at high working temperatures.
Corrosion Resistance: Offers reasonable level of resistance to corrosive attack.
Advantages:
Costly: Relatively expensive than other carbon steels.
Limited Weldability: May pose challenges in welds operations.
Machinability: May have relatively low machinability.
Susceptible to Decarburization: Common issues include surface decarburization during heat treatment.
Disadvantages:
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