AMS 5641

AMS 5641 Stainless Steel – Composition, Properties, and Uses

AMS 5641 is a popular aerospace stainless steel alloy that is used for a wide range of applications in the aviation industry. The alloy not only offers high strength but also has good corrosion resistance properties. It is well-known for its toughness, wear-and-tear resistance, and ability to retain strength even under high temperatures. This blog post will explore the composition, physical properties, mechanical properties, hardness, heat treatment, and uses of AMS 5641.

What is AMS 5641?

AMS 5641 (also known as 303 Stainless Steel) is a type of stainless steel that is widely used in industries where high strength and corrosion resistance are necessary. This material is characterized by its outstanding durability and superior toughness, making it ideal for aerospace, chemical processing, and medical equipment applications. AMS5641 is known for its exceptional resistance to corrosion and oxidation, making it well-suited for use in harsh environments where other metals would quickly deteriorate. With its unique properties and impressive performance record, it’s no wonder that AMS5641 is a top choice for engineers and manufacturers worldwide.

What Form Is AMS 5641 Available at Piping Mart?

  • Nuts
  • Tubing
  • Flanges
  • Fasteners
  • Sheet Plates
  • Pipe Fittings
  • Forged Fittings

AMS 5641 Composition

AMS 5641 is a martensitic stainless steel alloy that contains up to 17% chromium, 4% nickel, and 2.5% molybdenum. Other elements present in the alloy include carbon, silicon, manganese, sulfur, and phosphorus. The alloy’s unique combination of elements gives it exceptional mechanical and physical properties.

%

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 5641 Physical Properties

AMS 5641 has a density of 7.8 g/cm³ and is magnetic. It has a melting point of 1463°C and can be used in high-temperature applications. The alloy has high strength and excellent toughness, making it ideal for harsh environments.

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 5641 Mechanical Properties

The mechanical properties of AMS 5641 are impressive. Its ultimate tensile strength is 190ksi, its yield strength is 135ksi, and its elongation is 10%. Its high strength, toughness, and wear resistance make it ideal for aerospace applications requiring high-performance materials.

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 5641 Equivalents

Euronorm

UNS

BS

En

Grade

1.4305

S30300

303S31

58M

303

AMS 5641 Hardness

AMS 5641 is a hard, wear-resistant alloy. Its Rockwell hardness ranges from C43 to C47 in the annealed condition and can be hardened further through heat treatment.

AMS 5641 Heat Treatment

The heat treatment process for AMS 5641 involves quenching the steel in oil or air, followed by tempering. This process helps to improve the alloy’s hardness, toughness, and resistance to wear and tear.

AMS 5641 Uses

AMS 5641 is commonly used to manufacture aircraft parts that require high strength and resistance to wear and tear. The alloy is also used in producing shafts, gears, and bearings, which require high toughness, and its excellent corrosion resistance makes it suitable for marine applications.

Conclusion:

AMS 5641 is a versatile aerospace stainless steel alloy with exceptional strength, wear, and corrosion resistance. Its unique composition, physical properties, and mechanical properties make it a go-to material for applications in aerospace, marine, and other harsh environments. Its excellent heat treatment capabilities also make it suitable for high-temperature applications. Whether you need a material for aircraft parts or bearings, AMS 5641 is a reliable, high-performance alloy that will meet your needs.

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