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SAE-AISI 1144 Steel vs. S30435 Stainless Steel

Both SAE-AISI 1144 steel and S30435 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 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 1144 steel and the bottom bar is S30435 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 230
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 17
51
Fatigue Strength, MPa 280 to 430
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Shear Strength, MPa 460 to 510
370
Tensile Strength: Ultimate (UTS), MPa 750 to 840
510
Tensile Strength: Yield (Proof), MPa 420 to 690
170

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
900
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
16
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
14
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.9
Embodied Energy, MJ/kg 19
40
Embodied Water, L/kg 47
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 91 to 110
210
Resilience: Unit (Modulus of Resilience), kJ/m3 480 to 1290
77
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 30
18
Strength to Weight: Bending, points 23 to 25
18
Thermal Diffusivity, mm2/s 14
4.2
Thermal Shock Resistance, points 22 to 24
12

Alloy Composition

Carbon (C), % 0.4 to 0.48
0 to 0.080
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0
1.5 to 3.0
Iron (Fe), % 97.5 to 98
66.9 to 75.5
Manganese (Mn), % 1.4 to 1.7
0 to 2.0
Nickel (Ni), % 0
7.0 to 9.0
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0.24 to 0.33
0 to 0.030