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SAE-AISI 1015 Steel vs. SAE-AISI 1043 Steel

Both SAE-AISI 1015 steel and SAE-AISI 1043 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is SAE-AISI 1015 steel and the bottom bar is SAE-AISI 1043 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
190 to 200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 32
13 to 18
Fatigue Strength, MPa 170 to 250
230 to 390
Poisson's Ratio 0.29
0.29
Reduction in Area, % 46 to 56
40 to 51
Shear Modulus, GPa 73
73
Shear Strength, MPa 260 to 270
400 to 430
Tensile Strength: Ultimate (UTS), MPa 390 to 440
650 to 710
Tensile Strength: Yield (Proof), MPa 210 to 370
350 to 600

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1470
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 6.9
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.9
8.1

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 45
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 110
87 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 360
320 to 980
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 14 to 15
23 to 25
Strength to Weight: Bending, points 15 to 16
21 to 22
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 12 to 14
21 to 22

Alloy Composition

Carbon (C), % 0.13 to 0.18
0.4 to 0.47
Iron (Fe), % 99.13 to 99.57
98.4 to 98.9
Manganese (Mn), % 0.3 to 0.6
0.7 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Sulfur (S), % 0 to 0.050
0 to 0.050

Comparable Variants