ThePipingMart Blog Grades SAE – AISI 1055 Carbon Steel (UNS G10550) – Composition, Properties and Uses

SAE – AISI 1055 Carbon Steel (UNS G10550) – Composition, Properties and Uses

SAE / AISI 1055 Steel

If you’re in the market for a new steel alloy, then you’ve probably come across AISI 1055. But what exactly is SAE / AISI 1055 steel? In this blog post, we’ll take a closer look at this versatile alloy and its many uses.

AISI 1055 Composition

Element Content (%)
Iron, Fe 98.41-98.9
Manganese, Mn 0.60-0.90
Carbon, C 0.50-0.60
Sulfur, S ≤ 0.050
Phosphorous, P ≤ 0.040

AISI 1055 Mechanical Properties

Properties Metric Imperial
Tensile strength, ultimate 660 MPa 95700 psi
Tensile strength, yield 560 MPa 81200 psi
Modulus of elasticity 190-210 GPa 29700-30458 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) 10% 10%
Reduction of area 40% 40%
Hardness, Brinell 197 197
Hardness, Knoop (converted from Brinell hardness) 219 219
Hardness, Rockwell B (converted from Brinell hardness) 92 92
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) 13 13
Hardness, Vickers (converted from Brinell hardness) 207 207
Machinability (based on AISI 1212 steel. as 100 machinability) 55 55

AISI 1055 Physical Properties

Properties Metric Imperial
Density 7.85 g/cm3 0.284 lb/in3

AISI 1055 Equivalent

  • DIN 1.1209
  • ASTM A29
  • ASTM A510
  • ASTM A576
  • ASTM A682
  • FED QQ-S-700 (1055)
  • SAE J403
  • SAE J412
  • SAE J414

AISI 1055 Thermal Properties

Properties Metric Imperial
Thermal expansion co-efficient 11 µm/m°C 6.11 µin/in°F
Thermal conductivity 49.8 W/mK 346 BTU in/hr.ft2.°F

AISI 1055 Uses

The SAE 1055 steel is an outstanding candidate for a variety of uses, as its unique combination of characteristics makes it ideally suited for any project. It has moderate strength, as well as good machinability and ductility, allowing it to be formed into any shape needed for the job at hand. Additionally, its low carbon content helps to make it tougher without sacrificing any of its essential qualities. This makes SAE/AISI 1055 suitable for use in components that must handle a lot of pressure or tough environmental conditions, such as drivetrain components and construction equipment gears, shafts, axles and bolts. Furthermore, because this steel can be heat treated to increase hardness and strength safely and economically, it is also ideal in automotive components that may require a specific level of strength to perform their given task.

Corrosion Resistance

One of the most important properties of any steel alloy is its resistance to corrosion. Grade 1055 steel is highly resistant to corrosion thanks to its high carbon content. This makes it an ideal choice for applications where corrosion resistance is key, such as in the automotive and construction industries.

Heat Resistance

Alloy 1055 steel also has excellent heat resistance. This makes it a good choice for applications where high temperatures are a concern, such as in the aerospace industry.

Heat Treatment

In order to achieve its full potential, SAE / AISI 1055 steel must undergo heat treatment. This involves heating the steel to a high temperature and then cooling it rapidly. This process helps to improve the steel’s strength and hardness.

Machining

SAE / AISI 1055 steel is easy to machine, thanks to its high carbon content. This makes it a good choice for applications where machining is required, such as in the production of engine parts.

Welding

Welding is another area where SAE / AISI 1055 excels due to its high carbon content. This makes it an ideal choice for applications where welding is required, such as in the construction industry.

Conclusion

As you can see, SAE / AISI 1055 steel is a versatile alloy with a wide range of uses. Thanks to its high carbon content, it’s highly resistant to corrosion and has excellent heat resistance. It’s also easy to machine and weld, making it a good choice for applications where those processes are required. If you’re looking for a new steel alloy for your next project, be sure to keep SAE / AISI 1055 in mind!

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