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S33550 Stainless Steel vs. SAE-AISI M44 Steel

Both S33550 stainless steel and SAE-AISI M44 steel are iron alloys. They have 59% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is S33550 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 0.27
0.29
Shear Modulus, GPa 79
78
Tensile Strength: Ultimate (UTS), MPa 680
870 to 2290

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1400
1590
Melting Onset (Solidus), °C 1360
1540
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 24
43
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 4.3
9.9
Embodied Energy, MJ/kg 61
150
Embodied Water, L/kg 190
170

Common Calculations

PREN (Pitting Resistance) 30
35
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 24
28 to 75
Strength to Weight: Bending, points 22
24 to 46
Thermal Diffusivity, mm2/s 3.9
3.7
Thermal Shock Resistance, points 15
27 to 70

Alloy Composition

Carbon (C), % 0.040 to 0.1
1.1 to 1.2
Cerium (Ce), % 0.025 to 0.070
0
Chromium (Cr), % 25 to 28
4.0 to 4.8
Cobalt (Co), % 0
11 to 12.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 48.8 to 58.2
65.3 to 70.6
Lanthanum (La), % 0.025 to 0.070
0
Manganese (Mn), % 0 to 1.5
0.2 to 0.4
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 16.5 to 20
0 to 0.3
Niobium (Nb), % 0.050 to 0.15
0
Nitrogen (N), % 0.18 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
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