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SAE-AISI 1030 Steel vs. S44401 Stainless Steel

Both SAE-AISI 1030 steel and S44401 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1030 steel and the bottom bar is S44401 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14 to 22
21
Fatigue Strength, MPa 210 to 320
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 330 to 360
300
Tensile Strength: Ultimate (UTS), MPa 530 to 590
480
Tensile Strength: Yield (Proof), MPa 300 to 490
300

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
930
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
22
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
12
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.9
Embodied Energy, MJ/kg 18
40
Embodied Water, L/kg 46
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 100
90
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 650
230
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19 to 21
17
Strength to Weight: Bending, points 18 to 20
18
Thermal Diffusivity, mm2/s 14
5.9
Thermal Shock Resistance, points 17 to 19
17

Alloy Composition

Carbon (C), % 0.28 to 0.34
0 to 0.025
Chromium (Cr), % 0
17.5 to 19.5
Iron (Fe), % 98.7 to 99.12
75.1 to 80.6
Manganese (Mn), % 0.6 to 0.9
0 to 1.0
Molybdenum (Mo), % 0
1.8 to 2.5
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0 to 0.040
0 to 0.040
Sulfur (S), % 0 to 0.050
0 to 0.030
Titanium (Ti), % 0
0.2 to 0.8