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SAE-AISI D7 Steel vs. S45503 Stainless Steel

Both SAE-AISI D7 steel and S45503 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D7 steel and the bottom bar is S45503 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 800 to 2120
1610 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 11
11

Otherwise Unclassified Properties

Base Metal Price, % relative 10
15
Density, g/cm3 7.6
7.9
Embodied Carbon, kg CO2/kg material 11
3.4
Embodied Energy, MJ/kg 180
48
Embodied Water, L/kg 130
120

Common Calculations

PREN (Pitting Resistance) 16
13
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29 to 78
57 to 65
Strength to Weight: Bending, points 25 to 48
39 to 43
Thermal Shock Resistance, points 27 to 72
56 to 64

Alloy Composition

Carbon (C), % 2.2 to 2.5
0 to 0.010
Chromium (Cr), % 11.5 to 13.5
11 to 12.5
Copper (Cu), % 0 to 0.25
1.5 to 2.5
Iron (Fe), % 76.6 to 81.9
72.4 to 78.9
Manganese (Mn), % 0 to 0.6
0 to 0.5
Molybdenum (Mo), % 0.7 to 1.2
0 to 0.5
Nickel (Ni), % 0 to 0.3
7.5 to 9.5
Niobium (Nb), % 0
0.1 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0 to 0.6
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.4
Vanadium (V), % 3.8 to 4.4
0