ThePipingMart Blog Grades SAE/AISI 5130 Alloy Steel (UNS G51300) – Composition, Properties and Uses

SAE/AISI 5130 Alloy Steel (UNS G51300) – Composition, Properties and Uses

SAE/AISI 5130 Steel

SAE/AISI 5130 is a low-alloy steel composed of chromium, manganese, and carbon. UNS G51300 has great strength and durability, making it an excellent choice for numerous industrial applications. This guide will look at the uses, corrosion resistance, heat resistance, heat treatment, machining, and welding properties of 5130 Alloy Steel.

AISI 5130 Composition

Element Content (%)
Iron, Fe 97.295 – 98.07
Chromium, Cr 0.800 – 1.10
Manganese, Mn 0.700 – 0.900
Carbon, C 0.280 – 0.330
Silicon, Si 0.150 – 0.300
Sulfur, S 0.0400
Phosphorous, P 0.0350

AISI 5130 Physical Properties

Properties Metric Imperial
Density 7.83 g/cm3 0.283 lb/in³

AISI 5130 Mechanical Properties

Properties Metric Imperial
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Shear modulus (typical for steel) 80 GPa 11600 ksi
Elastic modulus 190-210 GPa 27557-30458 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Hardness, Brinell (annealed) 170 170
Hardness, Brinell (normalized) 241 241
Hardness, Knoop (converted from Brinell hardness) 191 191
Hardness, Rockwell B (converted from Brinell hardness) 86 86
Hardness, Vickers (converted from Brinell hardness) 178 178
Machinability (annealed and cold drawn. Based on 100 machinability for AISI 1212 steel) 70 70

AISI 5130 Thermal Properties

Properties Metric Imperial
Thermal conductivity (typical steel) 46.6 W/mK 323 BTU in/hr.ft².°F

AISI 5130 Equivalent

  • ASTM A322
  • ASTM A331
  • ASTM A505
  • ASTM A519
  • SAE J404
  • SAE J412
  • SAE J770

AISI 5130 Uses

SAE/AISI 5130 is an ideal material for numerous industries due to its many uses. This type of steel is often used in the production of axles, shafts, gears, pins, and other automotive components. Its strength makes it a popular choice in the construction industry as well—it’s often used in structural beams and columns as well as in transmission towers. Additionally, it can be used to make knives and cutting tools due to its high wear resistance.

Corrosion Resistance

SAE/AISI 5130 has good corrosion resistance properties when compared to other steels. It doesn’t corrode easily due to its chromium content which also helps prevent rusting. The alloying elements present in this type of steel provide additional protection against corrosion caused by exposure to saltwater or acidic environments. Additionally, it can be galvanized for further corrosion protection if needed.

Heat Resistance

The heat resistance properties of SAE/AISI 5130 make it suitable for use in applications where temperatures are higher than normal operating temperatures, such as parts exposed to exhaust systems or hot air chambers. It also has good thermal conductivity which helps maintain consistent temperatures across parts when exposed to extreme heat sources like furnaces or kilns. Heat Treatment of SAE / AISI 5130 Steel

Heat Treating

Heat treating can be used on SAE/AISI 5130 steel so that you can attain the desired mechanical properties, such as hardness or ductility, depending on what your application requires. This type of steel responds well to quenching and tempering processes which can help you achieve the desired results with minimal effort and time investment compared with other materials, such as stainless steel, that require more complicated treatments for optimal performance results.   Machining of SAE / AISI 5130 Steel


Machining operations on this type of steel may require coolant lubrication due to its tendency to work hard during machining operations at high speeds or when using small-diameter tools that don’t provide much support during cutting operations. It also responds well to grinding operations if surface finish requirements are necessary for your application needs.


Welding is possible with this type of steel using standard arc welding techniques, including gas metal arc welding (GMAW), gas tungsten arc welding (GTAW), and shielded metal arc welding (SMAW). Preheating prior welds may help reduce distortion during cooling cycles but isn’t always necessary depending on joint design requirements or part thicknesses being welded together.


As you can see from the above information, SAE / AISI 5130 offers excellent versatility, corrosion resistance, heat resistance, heat treatability, machinability, and weldability. These qualities make it suitable for many applications ranging from automotive components, structural beams & columns, cutting tools, and transmission towers

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SAE/AISI 5130 Alloy Steel (UNS G51300) – Composition, Properties and Uses

by Abhishek Modak time to read: 2 min