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SAE-AISI D7 Steel vs. N08811 Stainless Steel

Both SAE-AISI D7 steel and N08811 stainless steel are iron alloys. They have 59% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D7 steel and the bottom bar is N08811 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 800 to 2120
510

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1440
1390
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
12
Thermal Expansion, µm/m-K 11
14

Otherwise Unclassified Properties

Base Metal Price, % relative 10
30
Density, g/cm3 7.6
8.0
Embodied Carbon, kg CO2/kg material 11
5.3
Embodied Energy, MJ/kg 180
76
Embodied Water, L/kg 130
200

Common Calculations

PREN (Pitting Resistance) 16
21
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29 to 78
18
Strength to Weight: Bending, points 25 to 48
18
Thermal Diffusivity, mm2/s 7.4
3.0
Thermal Shock Resistance, points 27 to 72
13

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.6
Carbon (C), % 2.2 to 2.5
0.060 to 0.1
Chromium (Cr), % 11.5 to 13.5
19 to 23
Copper (Cu), % 0 to 0.25
0 to 0.75
Iron (Fe), % 76.6 to 81.9
39.5 to 50.6
Manganese (Mn), % 0 to 0.6
0 to 1.5
Molybdenum (Mo), % 0.7 to 1.2
0
Nickel (Ni), % 0 to 0.3
30 to 35
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 0.015
Titanium (Ti), % 0
0.15 to 0.6
Vanadium (V), % 3.8 to 4.4
0