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SAE-AISI M48 Steel vs. S20910 Stainless Steel

Both SAE-AISI M48 steel and S20910 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 20 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 SAE-AISI M48 steel and the bottom bar is S20910 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
79
Tensile Strength: Ultimate (UTS), MPa 890 to 2390
780 to 940

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1670
1420
Melting Onset (Solidus), °C 1620
1380
Specific Heat Capacity, J/kg-K 420
480
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 48
22
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 13
4.8
Embodied Energy, MJ/kg 190
68
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 37
34
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 28 to 76
28 to 33
Strength to Weight: Bending, points 23 to 45
24 to 27
Thermal Shock Resistance, points 26 to 71
17 to 21

Alloy Composition

Carbon (C), % 1.4 to 1.5
0 to 0.060
Chromium (Cr), % 3.5 to 4.0
20.5 to 23.5
Cobalt (Co), % 8.0 to 10
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 63.8 to 69.8
52.1 to 62.1
Manganese (Mn), % 0.15 to 0.4
4.0 to 6.0
Molybdenum (Mo), % 4.8 to 5.5
1.5 to 3.0
Nickel (Ni), % 0 to 0.3
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
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
Tungsten (W), % 9.5 to 10.5
0
Vanadium (V), % 2.8 to 3.3
0.1 to 0.3

Comparable Variants