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EN 1.4981 Stainless Steel vs. SAE-AISI M46 Steel

Both EN 1.4981 stainless steel and SAE-AISI M46 steel are iron alloys. They have 70% of their average alloy composition in common. 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 1.4981 stainless steel and the bottom bar is SAE-AISI M46 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 610
800 to 2300

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1440
1540
Melting Onset (Solidus), °C 1400
1500
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 16
18
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 25
33
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 4.8
12
Embodied Energy, MJ/kg 67
180
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 22
35
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
27 to 78
Strength to Weight: Bending, points 20
24 to 48
Thermal Diffusivity, mm2/s 4.3
4.9
Thermal Shock Resistance, points 14
25 to 71

Alloy Composition

Carbon (C), % 0.040 to 0.1
1.2 to 1.3
Chromium (Cr), % 15.5 to 17.5
3.7 to 4.2
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 59.6 to 66.7
70 to 73.8
Manganese (Mn), % 0 to 1.5
0.2 to 0.4
Molybdenum (Mo), % 1.6 to 2.0
8.0 to 8.5
Nickel (Ni), % 15.5 to 17.5
0 to 0.3
Niobium (Nb), % 0.4 to 1.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.3 to 0.6
0.4 to 0.65
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0
1.9 to 2.2
Vanadium (V), % 0
3.0 to 3.3