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SAE-AISI D7 Steel vs. S44536 Stainless Steel

Both SAE-AISI D7 steel and S44536 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 22 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 S44536 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 800 to 2120
460

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
21
Thermal Expansion, µm/m-K 11
11

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 11
2.8
Embodied Energy, MJ/kg 180
41
Embodied Water, L/kg 130
140

Common Calculations

PREN (Pitting Resistance) 16
22
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29 to 78
17
Strength to Weight: Bending, points 25 to 48
17
Thermal Diffusivity, mm2/s 7.4
5.6
Thermal Shock Resistance, points 27 to 72
16

Alloy Composition

Carbon (C), % 2.2 to 2.5
0 to 0.015
Chromium (Cr), % 11.5 to 13.5
20 to 23
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 76.6 to 81.9
72.8 to 80
Manganese (Mn), % 0 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.7 to 1.2
0
Nickel (Ni), % 0 to 0.3
0 to 0.5
Niobium (Nb), % 0
0.050 to 0.8
Nitrogen (N), % 0
0 to 0.015
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
0 to 0.8
Vanadium (V), % 3.8 to 4.4
0