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EN 1.4971 Stainless Steel vs. SAE-AISI S5 Steel

Both EN 1.4971 stainless steel and SAE-AISI S5 steel are iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. 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 EN 1.4971 stainless steel and the bottom bar is SAE-AISI S5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
72
Tensile Strength: Ultimate (UTS), MPa 800
680 to 1940

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
42
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
3.1
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 7.6
2.1
Embodied Energy, MJ/kg 110
29
Embodied Water, L/kg 300
51

Common Calculations

PREN (Pitting Resistance) 38
2.9
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
25 to 70
Strength to Weight: Bending, points 23
22 to 45
Thermal Diffusivity, mm2/s 3.4
11
Thermal Shock Resistance, points 19
23 to 65

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.5 to 0.65
Chromium (Cr), % 20 to 22.5
0 to 0.5
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 24.3 to 37.1
93.6 to 97
Manganese (Mn), % 0 to 2.0
0.6 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0.2 to 1.4
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 1.0
1.8 to 2.3
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 2.0 to 3.0
0
Vanadium (V), % 0
0 to 0.35