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SAE-AISI 1049 Steel vs. S42300 Stainless Steel

Both SAE-AISI 1049 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 1049 steel and the bottom bar is S42300 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 220
330
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
9.1
Fatigue Strength, MPa 250 to 400
440
Poisson's Ratio 0.29
0.28
Reduction in Area, % 34 to 46
22
Shear Modulus, GPa 72
77
Shear Strength, MPa 420 to 450
650
Tensile Strength: Ultimate (UTS), MPa 680 to 750
1100
Tensile Strength: Yield (Proof), MPa 370 to 640
850

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
750
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
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 7.0
4.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
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 18
44
Embodied Water, L/kg 46
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 75 to 99
93
Resilience: Unit (Modulus of Resilience), kJ/m3 370 to 1090
1840
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 27
39
Strength to Weight: Bending, points 22 to 23
30
Thermal Diffusivity, mm2/s 14
6.8
Thermal Shock Resistance, points 22 to 24
40

Alloy Composition

Carbon (C), % 0.46 to 0.53
0.27 to 0.32
Chromium (Cr), % 0
11 to 12
Iron (Fe), % 98.5 to 98.9
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