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SAE-AISI 1084 Steel vs. S42300 Stainless Steel

Both SAE-AISI 1084 steel and S42300 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1084 steel and the bottom bar is S42300 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 270
330
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
9.1
Fatigue Strength, MPa 320 to 370
440
Poisson's Ratio 0.29
0.28
Reduction in Area, % 28 to 45
22
Shear Modulus, GPa 72
77
Shear Strength, MPa 470 to 550
650
Tensile Strength: Ultimate (UTS), MPa 780 to 930
1100
Tensile Strength: Yield (Proof), MPa 510 to 600
850

Thermal Properties

Latent Heat of Fusion, J/g 240
270
Maximum Temperature: Mechanical, °C 400
750
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
25
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
4.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
5.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
9.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.2
Embodied Energy, MJ/kg 19
44
Embodied Water, L/kg 46
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81 to 89
93
Resilience: Unit (Modulus of Resilience), kJ/m3 700 to 960
1840
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 28 to 33
39
Strength to Weight: Bending, points 24 to 27
30
Thermal Diffusivity, mm2/s 14
6.8
Thermal Shock Resistance, points 25 to 30
40

Alloy Composition

Carbon (C), % 0.8 to 0.93
0.27 to 0.32
Chromium (Cr), % 0
11 to 12
Iron (Fe), % 98.1 to 98.6
82 to 85.1
Manganese (Mn), % 0.6 to 0.9
1.0 to 1.4
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0 to 0.050
0 to 0.025
Vanadium (V), % 0
0.2 to 0.3