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EN 1.4740 Stainless Steel vs. SAE-AISI M44 Steel

Both EN 1.4740 stainless steel and SAE-AISI M44 steel are iron alloys. They have 74% of their average alloy composition in common. There are 18 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 1.4740 stainless steel and the bottom bar is SAE-AISI M44 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
78

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1420
1590
Melting Onset (Solidus), °C 1370
1540
Specific Heat Capacity, J/kg-K 490
440
Thermal Conductivity, W/m-K 18
14
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
43
Density, g/cm3 7.6
8.4
Embodied Carbon, kg CO2/kg material 2.3
9.9
Embodied Energy, MJ/kg 32
150
Embodied Water, L/kg 120
170

Common Calculations

PREN (Pitting Resistance) 18
35
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Thermal Diffusivity, mm2/s 4.8
3.7

Alloy Composition

Carbon (C), % 0.3 to 0.5
1.1 to 1.2
Chromium (Cr), % 16 to 19
4.0 to 4.8
Cobalt (Co), % 0
11 to 12.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 75.4 to 82.7
65.3 to 70.6
Manganese (Mn), % 0 to 1.0
0.2 to 0.4
Molybdenum (Mo), % 0 to 0.5
6.0 to 7.0
Nickel (Ni), % 0 to 1.0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 1.0 to 2.5
0.3 to 0.55
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
5.0 to 5.8
Vanadium (V), % 0
1.9 to 2.2