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SAE-AISI D7 Steel vs. S66286 Stainless Steel

Both SAE-AISI D7 steel and S66286 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D7 steel and the bottom bar is S66286 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 800 to 2120
620 to 1020

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 27
15
Thermal Expansion, µm/m-K 11
17

Otherwise Unclassified Properties

Base Metal Price, % relative 10
26
Density, g/cm3 7.6
7.9
Embodied Carbon, kg CO2/kg material 11
6.0
Embodied Energy, MJ/kg 180
87
Embodied Water, L/kg 130
170

Common Calculations

PREN (Pitting Resistance) 16
19
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29 to 78
22 to 36
Strength to Weight: Bending, points 25 to 48
20 to 28
Thermal Diffusivity, mm2/s 7.4
4.0
Thermal Shock Resistance, points 27 to 72
13 to 22

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 2.2 to 2.5
0 to 0.080
Chromium (Cr), % 11.5 to 13.5
13.5 to 16
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 76.6 to 81.9
49.1 to 59.5
Manganese (Mn), % 0 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.7 to 1.2
1.0 to 1.5
Nickel (Ni), % 0 to 0.3
24 to 27
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
Titanium (Ti), % 0
1.9 to 2.4
Vanadium (V), % 3.8 to 4.4
0.1 to 0.5

Comparable Variants