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EN 1.4938 Stainless Steel vs. SAE-AISI M47 Steel

Both EN 1.4938 stainless steel and SAE-AISI M47 steel are iron alloys. They have 88% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.4938 stainless steel and the bottom bar is SAE-AISI M47 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 76
77
Tensile Strength: Ultimate (UTS), MPa 870 to 1030
810 to 2310

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1460
1540
Melting Onset (Solidus), °C 1420
1500
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 30
23
Thermal Expansion, µm/m-K 11
11

Otherwise Unclassified Properties

Base Metal Price, % relative 10
26
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 3.3
7.4
Embodied Energy, MJ/kg 47
100
Embodied Water, L/kg 110
120

Common Calculations

PREN (Pitting Resistance) 18
38
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31 to 37
28 to 79
Strength to Weight: Bending, points 26 to 29
24 to 48
Thermal Diffusivity, mm2/s 8.1
6.3
Thermal Shock Resistance, points 30 to 35
27 to 77

Alloy Composition

Carbon (C), % 0.080 to 0.15
1.1 to 1.2
Chromium (Cr), % 11 to 12.5
3.5 to 4.0
Cobalt (Co), % 0
4.8 to 5.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 80.5 to 84.8
78.7 to 85
Manganese (Mn), % 0.4 to 0.9
0.15 to 0.4
Molybdenum (Mo), % 1.5 to 2.0
9.3 to 10
Nickel (Ni), % 2.0 to 3.0
0 to 0.3
Nitrogen (N), % 0.020 to 0.040
0
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.5
0.2 to 0.45
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0
1.3 to 1.8
Vanadium (V), % 0.25 to 0.4
1.2 to 1.4

Comparable Variants