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EN 1.4971 Stainless Steel vs. SAE-AISI P6 Steel

Both EN 1.4971 stainless steel and SAE-AISI P6 steel are iron alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 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 EN 1.4971 stainless steel and the bottom bar is SAE-AISI P6 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
73
Tensile Strength: Ultimate (UTS), MPa 800
630 to 1930

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
43
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
4.6
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 7.6
1.8
Embodied Energy, MJ/kg 110
24
Embodied Water, L/kg 300
59

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
22 to 68
Strength to Weight: Bending, points 23
21 to 44
Thermal Diffusivity, mm2/s 3.4
11
Thermal Shock Resistance, points 19
21 to 63

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.050 to 0.15
Chromium (Cr), % 20 to 22.5
1.3 to 1.8
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 24.3 to 37.1
92.9 to 95
Manganese (Mn), % 0 to 2.0
0.35 to 0.7
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
3.3 to 3.8
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
0.1 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 2.0 to 3.0
0