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SAE-AISI D7 Steel vs. EN 1.3975 Stainless Steel

Both SAE-AISI D7 steel and EN 1.3975 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 20 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 EN 1.3975 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
76
Tensile Strength: Ultimate (UTS), MPa 800 to 2120
660

Thermal Properties

Latent Heat of Fusion, J/g 270
340
Melting Completion (Liquidus), °C 1440
1360
Melting Onset (Solidus), °C 1400
1320
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 10
15
Density, g/cm3 7.6
7.5
Embodied Carbon, kg CO2/kg material 11
3.3
Embodied Energy, MJ/kg 180
47
Embodied Water, L/kg 130
150

Common Calculations

PREN (Pitting Resistance) 16
21
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 29 to 78
24
Strength to Weight: Bending, points 25 to 48
22
Thermal Shock Resistance, points 27 to 72
15

Alloy Composition

Carbon (C), % 2.2 to 2.5
0 to 0.050
Chromium (Cr), % 11.5 to 13.5
16 to 18
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 76.6 to 81.9
58.2 to 65.4
Manganese (Mn), % 0 to 0.6
7.0 to 9.0
Molybdenum (Mo), % 0.7 to 1.2
0 to 1.0
Nickel (Ni), % 0 to 0.3
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.6
3.5 to 4.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 3.8 to 4.4
0