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SAE-AISI M48 Steel vs. S44635 Stainless Steel

Both SAE-AISI M48 steel and S44635 stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M48 steel and the bottom bar is S44635 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 78
81
Tensile Strength: Ultimate (UTS), MPa 890 to 2390
710

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1670
1460
Melting Onset (Solidus), °C 1620
1420
Specific Heat Capacity, J/kg-K 420
470
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 48
22
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 13
4.4
Embodied Energy, MJ/kg 190
62
Embodied Water, L/kg 160
170

Common Calculations

PREN (Pitting Resistance) 37
39
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 28 to 76
25
Strength to Weight: Bending, points 23 to 45
23
Thermal Shock Resistance, points 26 to 71
23

Alloy Composition

Carbon (C), % 1.4 to 1.5
0 to 0.025
Chromium (Cr), % 3.5 to 4.0
24.5 to 26
Cobalt (Co), % 8.0 to 10
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 63.8 to 69.8
61.5 to 68.5
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 4.8 to 5.5
3.5 to 4.5
Nickel (Ni), % 0 to 0.3
3.5 to 4.5
Niobium (Nb), % 0
0.2 to 0.8
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.4
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.2 to 0.8
Tungsten (W), % 9.5 to 10.5
0
Vanadium (V), % 2.8 to 3.3
0