ThePipingMart Blog Grades AMS 4376 Magnesium Alloy – Composition, Properties, Uses

AMS 4376 Magnesium Alloy – Composition, Properties, Uses

AMS 4376

AMS 4376 is a specific type of alloy widely recognized for its remarkable strength and resistance to corrosion. This metal is used in various industries to develop mission-critical components that require exceptional hardness and toughness. This blog post will provide an in-depth analysis of AMS 4376 and explore its composition, physical and mechanical properties, uses, hardness, and heat treatment.

What is AMS 4376?

AMS 4376 is a Niobium-based superalloy that was developed for use in high-temperature applications. It has excellent strength, creep, and oxidation resistance when exposed to temperatures up to 1800°F (982°C) and provides superior hot corrosion protection. Its combination of properties makes it an ideal material for aerospace industrial gas turbines, aircraft engine components and even nuclear power plants.

AMS 4376 Composition

AMS 4376 is a high-performance nickel, iron, and chromium alloy. The metal’s chemical makeup is vital in its strength and durability. The alloy is created by melting each metal in proportions and allowing the mixture to cool and harden. AMS 4376 also contains other trace elements, such as manganese and carbon, that improve its mechanical properties.

Element Content (%)
Magnesium, Mg 97
Aluminum, Al 2.5-3.5
Zinc, Zn 0.60-1.4
Manganese, Mn ≥0.20
Silicon, Si ≤0.10
Copper, Cu ≤0.050
Calcium, Ca ≤0.040
Iron, Fe ≤0.0050
Nickel, Ni ≤0.0050

AMS 4376 Physical Properties

One of the essential features of AMS 4376 is its high resistance to corrosion, which makes it ideal for use in applications requiring durability and longevity. The alloy also has excellent thermal conductivity and is highly resistant to thermal expansion. Furthermore, AMS 4376 is known for its good electrical conductivity and ability to retain its properties under extreme temperatures.

Properties Metric Imperial
Density 1.77 g/cc 0.0639 lb/in³
Melting Point 605-630°C 1120-1170°F

AMS 4376 Mechanical Properties

The mechanical properties of AMS 4376 are critical in determining its performance in different environments. This alloy has excellent tensile strength, hardness, and flexibility. AMS 4376 can withstand high friction and pressure without bending, deforming, or failing. It is also resistant to fatigue and wear, making it ideal for harsh environments.

Properties Metric Imperial
Tensile Strength 290 MPa 42100 psi
Yield strength (@strain 0.200%) 220 MPa 31900 psi
Compressive Yield Strength (at 0.2% offset) 180 MPa 26100 psi
Ultimate Bearing Strength 495 MPa 71800 psi
Bearing Yield Strength 325 MPa 47100 psi
Elongation at break (in 50 mm) 15 % 15 %
Elastic Modulus (in tension) 45 GPa 6530 ksi
Poisson’s ratio 0.35 0.35
Shear Modulus 17 GPa 2470 ksi
Shear Strength 160 MPa 23200 psi
Machinability (relative rating, 100=Best) 100 100
Hardness, Brinell (500 kg load, 10 mm ball) 73 73
Hardness, Knoop (estimated from Brinell) 96 96

AMS 4376 Equivalent

  • UNS M11210

AMS 4376 Thermal Properties

Properties Metric Imperial
Thermal expansion co-efficient (@ 0.000-100°C/32-212°F) 26 µm/m°C 14.4 µin/in°F
Thermal Conductivity 96 W/mK 666 BTU in/hr.ft².°F

AMS 4376 Uses

AMS 4376 is used in many industries, including aerospace, defence, oil, and gas. The alloy is widely used to manufacture components in fuel systems, turbine engines, and exhaust systems. It is also used in chemical processing, marine, and power generation equipment. AMS 4376 is an excellent choice for industries that require high strength, toughness, and corrosion resistance.

AMS 4376 Hardness

The hardness of AMS 4376 is measured using the Rockwell hardness test. This alloy has a Rockwell hardness of B96, which indicates a high degree of hardness. The hardness of AMS 4376 increases with an increase in the percentage of cold working. This property is critical in applications where the component’s hardness is essential to its performance.

AMS 4376 Heat Treatment

AMS 4376 can be heat-treated to enhance its mechanical properties. The process involves heating the metal to specific temperatures and cooling it rapidly. This process creates a highly durable and strong alloy that can withstand high temperatures and pressure. Typical heat treatment processes for AMS 4376 include annealing, solution treatment, and ageing.


In summary, AMS 4376 material is an alloy with exceptional strength, toughness, and corrosion resistance. Its chemical composition, physical and mechanical properties, and heat treatment capabilities make it ideal for mission-critical applications in various industries. The metal’s high hardness, good electrical and thermal conductivity make it stand out among other competing metals. As a supplier of AMS 4376, Diversified Metals is an expert in providing this alloy to customers across industries. We pride ourselves on delivering exceptional quality, reliability, and performance.

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