ThePipingMart Blog Grades SAE/AISI 1059 Carbon Steel (UNS G10590) – Composition, Properties and Uses

SAE/AISI 1059 Carbon Steel (UNS G10590) – Composition, Properties and Uses

SAE / AISI 1059 Steel

If you’re a welder or metal worker, then you know how important it is to choose the right steel for the job. Even if you don’t consider yourself a professional in this field, it pays to do your research and understand what type of steel will be best for your project. One of the most popular options on the market today is SAE / AISI 1059 steel. SAE/AISI 1059 Carbon Steel (UNS G10590) is a medium carbon steel with significant strength and toughness. This particular steel composition includes elements such as carbon, manganese, phosphorus, sulfur, and silicon. AISI 1059 has a low hardenability, which means it can be easily machined, welded, and formed into different shapes. It exhibits good ductility and can withstand high temperatures, making it an ideal choice for applications such as springs, railway parts, and agricultural implements. With its exceptional properties and composition, AISI 1059 is widely used in various industries worldwide. Let’s take a look at its properties and understand why it’s so highly sought after.

What Forms of AISI 1059 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 1059 Composition

Element Content (%)
Iron, Fe 98.46-98.95
Carbon, C 0.55-0.65
Manganese, Mn 0.50-0.80
Sulfur, S 0.050
Phosphorous, P 0.040

AISI 1059 Physical Properties

Properties Metric Imperial
Density 7.87 g/cm3 0.284 lb/in³

AISI 1059 Mechanical Properties

Properties Metric Imperial
Izod impact (annealed at 790°C (1450°F)) 11 J 8.11 ft-lb
Izod impact (normalized at 900°C (1650°F)) 14 J 10.3 ft-lb
Izod impact (as rolled) 18 J 13.3 ft-lb
Modulus of elasticity (typical for steel) 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

AISI 1059 Thermal Properties

Properties Metric Imperial
Thermal expansion co-efficient 11.5 µm/m°C 6.39 µin/in°F
Thermal conductivity 51.9 W/mK 360 BTU in/hr.ft².°F

AISI 1059 Equivalent

  • ASTM A29
  • SAE J118
  • SAEJ412

AISI 1059 Uses

SAE / AISI 1059 is an alloy steel that is often used in the manufacturing of highly wear-resistant automobile parts like gears, axles and bearings. It also has excellent shock resistance even at the highest temperatures, making it ideal for other parts like valve springs and camshafts. Additionally, due to its ability to take on extreme temperatures while not losing strength or hardness, SAE / AISI 1059 steel is considered valuable in the making of lathe tools and cutters. Its unique properties make SAE / AISI 1059 steel a distinct choice in the engineering of components that are exposed to heavy pressure and heat over extended periods of time.

AISI 1059 Uses in Industries

Automotive Industry

AISI 1059 steel is commonly used in the automotive industry for components such as gears, shafts, and axles. Its high strength and wear resistance make it ideal for these applications, as it can withstand heavy loads and frequent use.

Construction Industry

AISI 1059 steel is often used in structural components such as beams, columns, and reinforcement bars in the construction industry. Its high tensile strength and toughness make it a reliable choice for buildings and other structures that require strong support.

Machinery Manufacturing

Machinery manufacturers also use AISI 1059 steel for various parts that require high strength and durability. This includes components such as bearings, gears, and machine tool parts. The versatility of this type of steel makes it suitable for a wide range of machinery applications.

Aerospace Industry

The aerospace industry also utilizes AISI 1059 steel for its strength and corrosion resistance properties. It is commonly used in aircraft landing gear systems, engine components, and other critical parts that require high reliability under extreme conditions.

Oil and Gas Industry

In the oil and gas industry, AISI 1059 steel is commonly used for drilling equipment, pipelines, and offshore platforms due to its high strength and ability to withstand harsh environments. It is also resistant to corrosion from natural elements found in oil and gas operations.

Agriculture Equipment

Farmers rely on durable equipment to maintain their crops, so AISI 1059 steel is often used to manufacture agricultural machinery such as plows, harrows, and cultivators. Its toughness allows these machines to withstand tough soil conditions without breaking or bending easily.

AISI 1059 Corrosion Resistance

One of the primary benefits of using SAE / AISI 1059 steel is its superior corrosion resistance. This type of steel has a higher chromium content than other steels, meaning that it resists corrosion from both acidic and alkaline environments. It also stands up better against moisture and humidity than other types of steel, making it an ideal choice for outdoor projects.

AISI 1059 Heat Resistance

Another benefit of using SAE / AISI 1059 steel is its heat resistance. This type of steel can withstand higher temperatures than other materials before losing its strength or becoming brittle. This makes it an excellent choice when welding large objects that require a lot of heat during the welding process. It also makes this type of steel suitable for use in high-temperature environments such as power plants and refineries.

AISI 1059 Heat Treatment & Machining

SAE / AISI 1059 steel can also be heat treated and machined with relative ease due to its low carbon content. As such, it can be used in applications where precise shapes are required, such as automotive parts or machine components. Its weldability makes it even more versatile; this type of steel can be welded easily without cracking or warping during the process.


For these reasons, SAE / AISI 1059 is one of the most popular types of steel on the market today. If you’re looking for reliable heat resistance, corrosion resistance, machinability, and weldability – all in one package – then this is definitely the material you should consider using for your next project! With proper care and maintenance over time, your finished product will stand up against wear and tear unlike any other material out there today!

Related Post