AISI 1026 Carbon Steel (UNS G10260)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations


Carbon steels are steels that contain only carbon as their specific alloying element. Traces of 0.4% silicon and 1.2% manganese can be found in these steels. Carbon steels also contain small quantities of residual elements such as copper, nickel, molybdenum, aluminium and chromium.

The following datasheet provides an overview of AISI 1026 carbon steel.

Chemical Composition

The chemical composition of AISI 1026 carbon steel is outlined in the following table.

Element Content (%)
Iron, Fe 98.73-99.18
Carbon, C 0.220-0.280
Manganese, Mn 0.60-0.90
Sulfur, S ≤ 0.050
Phosphorous, P ≤ 0.040

Physical Properties

The following table shows the physical properties of AISI 1026 carbon steel.

Properties Metric Imperial
Density 7.858 g/ cm3 0.2839 lb/in³

Mechanical Properties

The mechanical properties of cold drawn AISI 1026 carbon steel are displayed in the following table.

Properties Metric Imperial
Tensile strength 490 MPa 71100 psi
Yield strength 415 MPa 60200 psi
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Shear modulus (typical for steel) 80.0 GPa 11600 ksi
Elastic modulus 190-210 GPa 27557-30458 ksi
Poisson's ratio 0.27-0.30 0.27-0.30
Elongation at break (In 50 mm) 15.00% 15.00%
Reduction of area 40.00% 40.00%
Hardness, Brinell 143 143
Hardness, Knoop (converted from Brinell hardness) 163 163
Hardness, Rockwell B (converted from Brinell hardness) 78 78
Hardness, Vickers (converted from Brinell hardness) 149 149
Machinability (based on AISI 1212 steel as 100 machinability. The machinability of Group I bar, rod, and wire products can be improved by cold drawing.) 75 75

Thermal Properties

The thermal properties of AISI 1026 carbon steel are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@0.000-100°C/32-212°F) 12.1 µm/m°C 6.72 µin/in°F
Thermal conductivity (0ºC) 51.9 W/mK 360 BTU in/hr.ft².°F

Other Designations

Equivalent materials to AISI 1026 carbon steel are given in the following table.

ASTM A545 ASTM A576 ASTM A830 MIL F-20670 MIL S-22698
MIL S-24093 SAE J1397 SAE J403 SAE J412 SAE J414

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