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SAE-AISI 1010 Steel vs. SAE-AISI 4145 Steel

Both SAE-AISI 1010 steel and SAE-AISI 4145 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1010 steel and the bottom bar is SAE-AISI 4145 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 110
310
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22 to 31
16
Fatigue Strength, MPa 150 to 230
240
Poisson's Ratio 0.29
0.29
Reduction in Area, % 46 to 56
46
Shear Modulus, GPa 73
73
Shear Strength, MPa 230 to 250
360
Tensile Strength: Ultimate (UTS), MPa 350 to 400
580
Tensile Strength: Yield (Proof), MPa 190 to 330
360

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
420
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 47
42
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 14
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.4
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 18
20
Embodied Water, L/kg 45
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 82 to 93
80
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 290
350
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 12 to 14
21
Strength to Weight: Bending, points 14 to 15
20
Thermal Diffusivity, mm2/s 13
11
Thermal Shock Resistance, points 11 to 13
17

Alloy Composition

Carbon (C), % 0.080 to 0.13
0.43 to 0.48
Chromium (Cr), % 0
0.8 to 1.1
Iron (Fe), % 99.18 to 99.62
96.7 to 97.7
Manganese (Mn), % 0.3 to 0.6
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0 to 0.050
0 to 0.040