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ASTM A266 Carbon Steel vs. SAE-AISI 1025 Steel

Both ASTM A266 carbon steel and SAE-AISI 1025 steel are iron alloys.

For each property being compared, the top bar is ASTM A266 carbon steel and the bottom bar is SAE-AISI 1025 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
130 to 140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21 to 26
17 to 28
Fatigue Strength, MPa 170 to 200
190 to 280
Poisson's Ratio 0.29
0.29
Reduction in Area, % 34 to 43
45 to 57
Shear Modulus, GPa 73
73
Shear Strength, MPa 320 to 380
290 to 310
Tensile Strength: Ultimate (UTS), MPa 500 to 600
450 to 500
Tensile Strength: Yield (Proof), MPa 230 to 290
250 to 420

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51 to 52
52
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1 to 8.2
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18 to 19
18
Embodied Water, L/kg 46 to 47
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
80 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 230
170 to 470
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18 to 21
16 to 18
Strength to Weight: Bending, points 18 to 20
17 to 18
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 16 to 19
14 to 16