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SAE-AISI M48 Steel vs. S44700 Stainless Steel

Both SAE-AISI M48 steel and S44700 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M48 steel and the bottom bar is S44700 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
82
Tensile Strength: Ultimate (UTS), MPa 890 to 2390
600

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1670
1460
Melting Onset (Solidus), °C 1620
1410
Specific Heat Capacity, J/kg-K 420
480
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 48
18
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 13
3.6
Embodied Energy, MJ/kg 190
49
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 37
42
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 28 to 76
21
Strength to Weight: Bending, points 23 to 45
20
Thermal Shock Resistance, points 26 to 71
19

Alloy Composition

Carbon (C), % 1.4 to 1.5
0 to 0.010
Chromium (Cr), % 3.5 to 4.0
28 to 30
Cobalt (Co), % 8.0 to 10
0
Copper (Cu), % 0 to 0.25
0 to 0.15
Iron (Fe), % 63.8 to 69.8
64.9 to 68.5
Manganese (Mn), % 0.15 to 0.4
0 to 0.3
Molybdenum (Mo), % 4.8 to 5.5
3.5 to 4.2
Nickel (Ni), % 0 to 0.3
0 to 0.15
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.15 to 0.4
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 9.5 to 10.5
0
Vanadium (V), % 2.8 to 3.3
0