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EN 1.4905 Stainless Steel vs. SAE-AISI S7 Steel

Both EN 1.4905 stainless steel and SAE-AISI S7 steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.4905 stainless steel and the bottom bar is SAE-AISI S7 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 76
74
Tensile Strength: Ultimate (UTS), MPa 740
670 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1440
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
40
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 4.2
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
5.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.3
Embodied Energy, MJ/kg 40
31
Embodied Water, L/kg 90
65

Common Calculations

PREN (Pitting Resistance) 15
8.4
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
24 to 72
Strength to Weight: Bending, points 23
22 to 46
Thermal Diffusivity, mm2/s 7.0
11
Thermal Shock Resistance, points 25
22 to 66

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Boron (B), % 0.00050 to 0.0050
0
Carbon (C), % 0.090 to 0.13
0.45 to 0.55
Chromium (Cr), % 8.5 to 9.5
3.0 to 3.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 86.2 to 88.8
91.6 to 94.9
Manganese (Mn), % 0.3 to 0.6
0.2 to 0.9
Molybdenum (Mo), % 0.9 to 1.1
1.3 to 1.8
Nickel (Ni), % 0.1 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.050 to 0.090
0
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0.1 to 0.5
0.2 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 0.9 to 1.1
0
Vanadium (V), % 0.18 to 0.25
0 to 0.3