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SAE-AISI D3 Steel vs. S44625 Stainless Steel

Both SAE-AISI D3 steel and S44625 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 29 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 D3 steel and the bottom bar is S44625 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 9.8 to 15
22
Fatigue Strength, MPa 310 to 940
240
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 74
80
Shear Strength, MPa 470 to 1220
370
Tensile Strength: Ultimate (UTS), MPa 770 to 2050
590
Tensile Strength: Yield (Proof), MPa 480 to 1550
360

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 31
17
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
14
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.2
2.8
Embodied Energy, MJ/kg 48
39
Embodied Water, L/kg 100
160

Common Calculations

PREN (Pitting Resistance) 13
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 97 to 180
110
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 74
21
Strength to Weight: Bending, points 24 to 47
20
Thermal Diffusivity, mm2/s 8.3
4.6
Thermal Shock Resistance, points 23 to 63
19

Alloy Composition

Carbon (C), % 2.0 to 2.4
0 to 0.010
Chromium (Cr), % 11 to 13.5
25 to 27.5
Copper (Cu), % 0 to 0.25
0 to 0.2
Iron (Fe), % 80.3 to 87
69.4 to 74.3
Manganese (Mn), % 0 to 0.6
0 to 0.4
Molybdenum (Mo), % 0
0.75 to 1.5
Nickel (Ni), % 0 to 0.3
0 to 0.5
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.6
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 0 to 1.0
0
Vanadium (V), % 0 to 1.0
0