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S39274 Stainless Steel vs. SAE-AISI D7 Steel

Both S39274 stainless steel and SAE-AISI D7 steel are iron alloys. They have 76% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is S39274 stainless steel and the bottom bar is SAE-AISI D7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
73
Tensile Strength: Ultimate (UTS), MPa 900
800 to 2120

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1480
1440
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
27
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 24
10
Density, g/cm3 8.0
7.6
Embodied Carbon, kg CO2/kg material 4.3
11
Embodied Energy, MJ/kg 60
180
Embodied Water, L/kg 180
130

Common Calculations

PREN (Pitting Resistance) 43
16
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
29 to 78
Strength to Weight: Bending, points 26
25 to 48
Thermal Diffusivity, mm2/s 4.2
7.4
Thermal Shock Resistance, points 25
27 to 72

Alloy Composition

Carbon (C), % 0 to 0.030
2.2 to 2.5
Chromium (Cr), % 24 to 26
11.5 to 13.5
Copper (Cu), % 0.2 to 0.8
0 to 0.25
Iron (Fe), % 57 to 65.6
76.6 to 81.9
Manganese (Mn), % 0 to 1.0
0 to 0.6
Molybdenum (Mo), % 2.5 to 3.5
0.7 to 1.2
Nickel (Ni), % 6.0 to 8.0
0 to 0.3
Nitrogen (N), % 0.24 to 0.32
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.8
0 to 0.6
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 1.5 to 2.5
0
Vanadium (V), % 0
3.8 to 4.4