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SAE-AISI 1026 Steel vs. SAE-AISI 1044 Steel

Both SAE-AISI 1026 steel and SAE-AISI 1044 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is SAE-AISI 1026 steel and the bottom bar is SAE-AISI 1044 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 160
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 27
18
Fatigue Strength, MPa 200 to 310
230
Poisson's Ratio 0.29
0.29
Reduction in Area, % 45 to 55
46
Shear Modulus, GPa 73
72
Shear Strength, MPa 320 to 340
380
Tensile Strength: Ultimate (UTS), MPa 500 to 550
620
Tensile Strength: Yield (Proof), MPa 270 to 470
340

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 52
51
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
8.0

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 110
94
Resilience: Unit (Modulus of Resilience), kJ/m3 200 to 580
320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18 to 20
22
Strength to Weight: Bending, points 18 to 19
21
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 16 to 18
20

Alloy Composition

Carbon (C), % 0.22 to 0.28
0.43 to 0.5
Iron (Fe), % 98.7 to 99.18
98.8 to 99.27
Manganese (Mn), % 0.6 to 0.9
0.3 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.040
Sulfur (S), % 0 to 0.050
0 to 0.050