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SAE-AISI D3 Steel vs. S15500 Stainless Steel

Both SAE-AISI D3 steel and S15500 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D3 steel and the bottom bar is S15500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 9.8 to 15
6.8 to 16
Fatigue Strength, MPa 310 to 940
350 to 650
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 74
75
Shear Strength, MPa 470 to 1220
540 to 870
Tensile Strength: Ultimate (UTS), MPa 770 to 2050
890 to 1490
Tensile Strength: Yield (Proof), MPa 480 to 1550
590 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1390
1380
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
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
13
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.2
2.7
Embodied Energy, MJ/kg 48
39
Embodied Water, L/kg 100
130

Common Calculations

PREN (Pitting Resistance) 13
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 97 to 180
98 to 120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 74
32 to 53
Strength to Weight: Bending, points 24 to 47
26 to 37
Thermal Diffusivity, mm2/s 8.3
4.6
Thermal Shock Resistance, points 23 to 63
30 to 50

Alloy Composition

Carbon (C), % 2.0 to 2.4
0 to 0.070
Chromium (Cr), % 11 to 13.5
14 to 15.5
Copper (Cu), % 0 to 0.25
2.5 to 4.5
Iron (Fe), % 80.3 to 87
71.9 to 79.9
Manganese (Mn), % 0 to 0.6
0 to 1.0
Nickel (Ni), % 0 to 0.3
3.5 to 5.5
Niobium (Nb), % 0
0.15 to 0.45
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0 to 1.0
0
Vanadium (V), % 0 to 1.0
0