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SAE-AISI A9 Steel vs. EN 1.4710 Stainless Steel

Both SAE-AISI A9 steel and EN 1.4710 stainless steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A9 steel and the bottom bar is EN 1.4710 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
74

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 35
24
Thermal Expansion, µm/m-K 12
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
6.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
7.5

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
5.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.7
1.8
Embodied Energy, MJ/kg 70
24
Embodied Water, L/kg 82
76

Common Calculations

PREN (Pitting Resistance) 10
7.2
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Thermal Diffusivity, mm2/s 9.6
6.5

Alloy Composition

Carbon (C), % 0.45 to 0.55
0.2 to 0.35
Chromium (Cr), % 4.8 to 5.5
6.0 to 8.0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 87 to 90.5
87.4 to 92.3
Manganese (Mn), % 0 to 0.5
0.5 to 1.0
Molybdenum (Mo), % 1.3 to 1.8
0 to 0.15
Nickel (Ni), % 1.3 to 1.8
0 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 1.0 to 1.2
1.0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.8 to 1.4
0