ThePipingMart Blog Grades SAE / AISI 1548 – Composition, Properties and Uses

SAE / AISI 1548 – Composition, Properties and Uses

SAE / AISI 1548

SAE/AISI 1548 steel is a medium carbon, low alloy option, showcasing exceptional welding, machining, and heat treatment capabilities. Widely employed in automotive components, construction, and industrial equipment, it impresses with a notable strength-to-weight ratio and durability. This high-strength low-alloy (HSLA) steel, composed of iron, carbon, manganese, and trace elements like UNS G15480 and EN 1.1226 grades, excels in weldability and machinability. Its reputation for resilience against wear, tear, and extreme temperatures makes SAE/AISI 1548 steel a versatile choice extensively used in the automotive, construction, and manufacturing sectors.

What Forms of AISI 1548 is Available at Piping Mart?

  • Nut
  • Bar
  • Bolt
  • Pipe
  • Screw
  • Tubing
  • Valves
  • Washers
  • Flanges
  • Fasteners
  • Electrodes
  • Stud Bolts
  • Sheet Plates
  • Pipe Fittings
  • Forged Fitting
  • Instrumentation Fittings

AISI 1548 Chemical Composition

AISI 1548 steel is a medium carbon, low alloy steel with a chemical composition including iron, carbon, manganese, and trace elements. Its composition provides a balance contributing to its strength, ductility, and exceptional welding and machining properties. This makes it versatile for applications across various industries, ensuring reliability and performance.

Properties S
Cr Ni
0.44-0.52  0.07-0.6(a,b) 1.1-1.4 0.03 0.05
Mo Al Cu Nb Ti V Ce
N Co Pb B Other

AISI 1548 Physical Properties

AISI 1548 exhibits specific physical properties. It has a moderate thermal expansion, indicating its response to temperature changes. The steel demonstrates decent thermal conductivity, aiding in heat dissipation. Its specific heat capacity influences its ability to store heat. The service temperature range suits various applications. Additionally, the resistivity of AISI 1548 impacts its electrical conductivity, making it essential for specific use cases.

Quantity Value Unit
Thermal expansion 16 – 17 e-6/K
Thermal conductivity 16 – 16 W/m.K
Specific heat 500 – 500 J/kg.K
Melting temperature 1370 – 1400 °C
Service temperature 0 – 500 °C
Density 8000 – 8000 kg/m3
Resistivity 0.7 – 0.7 Ohm.mm2/m

AISI 1548 Mechanical Properties

AISI 1548 steel boasts specific mechanical properties. Its density represents its mass per unit volume. The Poisson’s ratio characterizes its deformation behavior under stress. The elastic modulus signifies its stiffness. Tensile strength measures its resistance to a pulling force. Reduction in the area indicates ductility after deformation. Hardness reflects its resistance to indentation or scratching.

Properties  Conditions
T (°C) Treatment
Density (×1000 kg/m3) 7.7-8.03 25
Poisson’s Ratio 0.27-0.30 25
Elastic Modulus (GPa) 190-210 25
Tensile Strength (Mpa) 650 25 annealed, cold drawn (round bar (19-32 mm)) more
Yield Strength (Mpa) 540
Elongation (%) 10
Reduction in Area (%) 35
Hardness (HB) 192 25 annealed, cold drawn (round bar (19-32 mm)) more

AISI 1548 Uses

AISI / SAE 1548 is a low-alloy steel grade often used in the automotive and aerospace industries. Its most characteristic feature is a combination of strength, ductility, and toughness, making this highly usable material ideal for applications where these properties are needed. In particular, it has been used for Hydraulic ram Cylinders in heavy industry, Suspension components in light vehicles, Landing gear and control systems in aircraft, as well as drive shafts and power takeoffs in various settings. In addition to its strength and durability, this material also offers excellent weldability without compromising quality or performance. As such, AISI / SAE 1548 has found itself integral for many different tasks across multiple industries today.

AISI 1548 Uses in Industries

  • Automotive Industry
  • Construction Industry
  • Aerospace Industry
  • Oil and Gas Industry
  • Manufacturing Industry

AISI 1548 Corrosion Resistance

Due to its chromium content, SAE/AISI 1548 steel exhibits exceptional corrosion resistance. This quality is well-suited for critical applications like Mining equipment, Processing plants, and Off-shore oil rigs, where corrosion resistance is paramount. Furthermore, its favorable welding characteristics enhance corrosion resistance when welded correctly. This combination of corrosion resistance and welding properties makes SAE/AISI 1548 steel a valuable choice for environments where durability and protection against corrosion are crucial.

AISI 1548 Heat Resistance

SAE / AISI 1548 steel also has excellent heat resistance making it suitable for high-temperature applications such as power plants and chemical processing facilities. The high chromium content helps to increase the melting point of the metal so that it can withstand temperatures up to 1600 degrees Celsius without losing its structural integrity or becoming brittle.

AISI 1548 Heat Treatment

Because of its good heat resistance properties, SAE / AISI 1548 steel can be heat treated for increased hardness and strength. This process involves heating the material to specific temperatures and then cooling it quickly in water or oil, depending on the desired outcome. Heat treating increases the strength of the metal while also improving its wear resistance which makes it well-suited for use in heavy machinery like excavators and bulldozers.

AISI 1548 Machining

SAE/AISI 1548 steel stands out for its ease of machining thanks to its low carbon content and impressive machinability rating of approximately 70. This attribute positions it as an excellent option for components demanding precise machining in intricate shapes, notably seen in applications like diesel engines and transmissions. Furthermore, the steel’s capacity for easy casting into complex shapes offers manufacturers a cost-effective and time-efficient alternative to crafting intricate parts, minimizing the need for more labor-intensive methods like milling or grinding.

AISI 1548 Welding

Lastly, SAE / AISI 1548 steel has excellent welding characteristics making it suitable for applications where welding is necessary, such as pipeline construction or shipbuilding. The low carbon content helps prevent cracking during welding while still allowing enough flexibility so that welders can work with larger pieces without worrying about warping or distortion during welding operations.


As you can see, SAE / AISI 1548 steel has a wide range of uses across multiple industries thanks to its combination of corrosion resistance, heat resistance, machinability, and weldability. Whether you need a component with complex shapes or something that needs to stand up against high temperatures – this type of steel can handle just about anything you throw at it! If you’re looking for a strong yet lightweight material that’s easy to work with, then look no further than SAE/AISI 1548 – the perfect all-around solution!

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