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SAE-AISI M44 Steel vs. EN 1.4938 Stainless Steel

Both SAE-AISI M44 steel and EN 1.4938 stainless steel are iron alloys. They have 75% 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 SAE-AISI M44 steel and the bottom bar is EN 1.4938 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 870 to 2290
870 to 1030

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1590
1460
Melting Onset (Solidus), °C 1540
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 14
30
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 43
10
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 9.9
3.3
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 170
110

Common Calculations

PREN (Pitting Resistance) 35
18
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28 to 75
31 to 37
Strength to Weight: Bending, points 24 to 46
26 to 29
Thermal Diffusivity, mm2/s 3.7
8.1
Thermal Shock Resistance, points 27 to 70
30 to 35

Alloy Composition

Carbon (C), % 1.1 to 1.2
0.080 to 0.15
Chromium (Cr), % 4.0 to 4.8
11 to 12.5
Cobalt (Co), % 11 to 12.3
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 65.3 to 70.6
80.5 to 84.8
Manganese (Mn), % 0.2 to 0.4
0.4 to 0.9
Molybdenum (Mo), % 6.0 to 7.0
1.5 to 2.0
Nickel (Ni), % 0 to 0.3
2.0 to 3.0
Nitrogen (N), % 0
0.020 to 0.040
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.3 to 0.55
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 5.0 to 5.8
0
Vanadium (V), % 1.9 to 2.2
0.25 to 0.4

Comparable Variants