Are you looking to expand your knowledge of AMS6294? This alloy steel is popular in various aerospace, defence, and automotive industries. This blog post will dive into everything you need to know about this exceptional material, including its composition, physical and mechanical properties, uses, hardness, and heat treatment.
What is AMS 6294?
AMS 6294 (also known as AISI 4620 Alloy Steel) is a specification developed by the Society of Automotive Engineers (SAE) that outlines aircraft-quality steel bars and forgings requirements. This specification covers a range of alloy steels, including nickel-chrome-molybdenum alloys and chromium-molybdenum-vanadium alloys. AMS6294 provides strict guidelines for these materials’ manufacturing processes, heat treatment, and mechanical properties to ensure they meet the rigorous standards required for use in aircraft structures and components. With aviation safety being of utmost importance, the careful attention paid to the composition and production of these materials is essential to maintaining the integrity of our skies.
AMS 6294 Composition
AMS6294, low alloy steel, contains Carbon, Manganese, Silicon, Nickel, Chromium, Molybdenum, Vanadium, and Phosphorus. These elements, in balanced quantities, make the steel incredibly strong and durable.
| Element | Content (%) |
|---|---|
| Iron, Fe | 96.405 – 97.38 |
| Nickel, Ni | 1.65 – 2 |
| Manganese, Mn | 0.450 – 0.650 |
| Molybdenum, Mo | 0.2 – 0.3 |
| Carbon, C | 0.170 – 0.220 |
| Silicon, Si | 0.150 – 0.350 |
| Sulfur, S | 0.04 |
| Phosphorous, P | 0.0350 |
AMS 6294 Physical Properties
The physical properties of AMS 6294 are impressive. The alloy steel has a density that ranges from 7.85 to 7.87 g/cm3. Its melting point ranges from 1424 °C to 1466 °C, with a thermal conductivity of 29.4 W/mK. The thermal expansion coefficient of AMS 6294 alloys is about 12.1 µm/m°C.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cm3 | 0.284 lb/in3 |
| Melting point | 1421°C | 2590°F |
AMS 6294 Mechanical Properties
AMS 6294 exhibits incredibly superior mechanical properties. Its tensile strength ranges from 1310 MPa to 1830 MPa, and the yield strength ranges from 1090 MPa to 1400 MPa. The alloy steel has a high elongation of up to 14%, which allows it to resist shocks and vibrations even under extreme conditions.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength, ultimate | 510 MPa | 74000 psi |
| Tensile strength, yield | 370 MPa | 53700 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) | 31.30% | 31.30% |
| Reduction of area | 60.30% | 60.30% |
| Hardness, Brinell | 149 | 149 |
| Hardness, Knoop (converted from Brinell hardness) | 169 | 169 |
| Hardness, Rockwell B | 80 | 80 |
| Hardness, Vickers (converted from Brinell hardness) | 155 | 155 |
| Machinability (hot rolled and cold drawn. Based on 100 machinability for AISI 1212 steel) | 65 | 65 |
AMS 6294 Equivalents
- AMS 6294
- AMS 6294C
- ASTM A29 (4620)
- ASTM A322 (4620)
- ASTM A331 (4620)
- ASTM A505
- ASTM A519 (4620)
- ASTM A535 (4620)
- ASTM A646 (4620-3)
- ASTM A752 (4620)
- ASTM A829
- SAE J1397 (4620)
- SAE J404 (4620)
- SAE J412 (4620)
- MIL SPEC MIL-S-7493 (A4620)
AMS 6294 Uses
AMS 6294 can be used in various applications. Its strength, durability, and cost-effectiveness make it a top choice in the aerospace and defence industries for structures and parts that require high strength and toughness. The alloy steel is also used in the automotive industry, particularly in crankshafts and yokes.
AMS 6294 Hardness
AMS 6294 is one of its most significant benefits. Its hardness ranges between 35 and 46 HRC, making it ideal for heavy-duty applications and high-stress environments.
AMS 6294 Heat treatment
AMS 6294 can undergo heat treatment processes known as normalizing, annealing, hardening, and tempering. These processes improve the strength and durability of the material, making it an excellent choice for applications that require high strength and toughness.
Conclusion
In summary, AMS 6294 material is a versatile, durable alloy steel with exceptional physical and mechanical properties. Its high strength, hardness, and heat treatment capabilities are ideal for various aerospace and automotive industries. Understanding this material’s composition, physical and mechanical properties, use, hardness, and heat treatment is essential to making informed decisions about its use in various applications. If you’re looking for a reliable alloy steel for your next project or production, consider AMS 6294.
