When choosing the right material for industrial applications, there are several factors to consider, such as composition, physical and mechanical properties, and potential uses. One material that has gained popularity in recent years is AMS 5638. This stainless steel alloy offers superior strength and durability, making it an ideal choice for various applications. This blog post will cover everything you need about AMS 5638, including its composition, properties, uses, hardness, and heat treatment.
What is AMS 5638?
AMS 5638 (also known as 303 Stainless Steel) is a corrosion-resistant stainless steel bars specification, also known as type 304. The AMS 5638 standard defines the chemical composition, mechanical properties, and tolerances for this type of stainless steel, commonly used in high-temperature and high-pressure applications such as aerospace, automotive, and medical equipment. One of the main benefits of AMS5638 is its excellent corrosion resistance, making it a popular choice for harsh environments. So, if you’re in the market for stainless steel bars that can handle tough conditions, consider AMS5638.
What Form Is AMS 5638 Available at Piping Mart?
- Nuts
- Tubing
- Flanges
- Fasteners
- Sheet Plates
- Pipe Fittings
- Forged Fittings
AMS 5638 Composition
AMS 5638 plate is a stainless steel alloy of iron, chromium, nickel, and molybdenum. This combination of elements results in a highly resistant material to corrosion and oxidation, even in high-temperature environments. The nickel content gives the alloy excellent toughness, while the molybdenum enhances its strength.
|
% |
303 |
|
C |
0-0.10 |
|
Mn |
0-2.0 |
|
Si |
0-1.0 |
|
P |
0-0.4 |
|
S |
0-0.15 |
|
Cr |
17-19 |
|
Ni |
8-10 |
|
Fe |
balance |
AMS 5638 Physical Properties
AMS 5638 has a density of 7.8 g/cm^3 and a melting point of 1400-1450°C. It is a non-magnetic material with high thermal conductivity, making it ideal for use in extreme temperatures. The alloy is also highly resistant to chemicals such as acids, alkalis, and chlorides, making it a popular choice for chemical processing equipment.
|
Property |
Value |
|
Density |
8.03 kg/m3 |
|
Melting Point |
1455°C |
|
Modulus of Elasticity |
193 GPa |
|
Electrical Resistivity |
0.72 x 10-6 Ω.m |
|
Thermal Conductivity |
16.3 W/m.K |
|
Thermal Expansion |
17.3 x 10-6/K |
AMS 5638 Mechanical Properties
AMS 5638 sheet has excellent mechanical properties, making it well-suited for high-stress applications. It has a minimum tensile strength of 760 MPa and a minimum yield strength of 345 MPa. The alloy also exhibits good fatigue strength and resistance to stress corrosion cracking.
|
Grade |
303 |
|
Tensile Strength (MPa) |
500-750 MPa |
|
Proof Stress (MPa) |
190 Min MPa |
|
Elongation A5 mm |
35 Min % |
| Hardness Brinell | 230 Max HB |
AMS 5638 Equivalents
|
Euronorm |
UNS |
BS |
En |
Grade |
|
1.4305 |
S30300 |
303S31 |
58M |
303 |
AMS 5638 Uses
AMS 5638 is commonly used in the aerospace industry for engine parts, exhaust systems, and structural components. It is also used in chemical processing, oil and gas, and marine applications. The alloy’s resistance to corrosion and oxidation makes it an ideal choice for harsh environments where other materials would fail.
AMS 5638 Hardness
AMS 5638 has a hardness range of 217-363 HBW. Depending on the application requirements, the material can be hardened through cold working or heat treatment. Hard-working can significantly increase the strength of the alloy, while heat treatment can improve its toughness and flexibility.
AMS 5638 Heat Treatment
AMS 5638 can be heat-treated to improve its properties for specific applications. Annealing can increase the alloy’s ductility and toughness, while precipitation hardening can significantly improve its strength. The specific heat treatment process will depend on the application and the desired properties of the alloy.
Conclusion:
AMS 5638 is a highly versatile stainless steel alloy that offers excellent strength, durability, and resistance to corrosion and oxidation. Its unique composition and properties make it an ideal choice for various applications, from aerospace to chemical processing. By understanding its composition, physical and mechanical properties, uses, hardness, and heat treatment options, you can decide whether AMS 5638 is the right material for your next project.
