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SAE-AISI M4 Steel vs. N08926 Stainless Steel

Both SAE-AISI M4 steel and N08926 stainless steel are iron alloys. They have 56% of their average alloy composition in common. There are 22 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 SAE-AISI M4 steel and the bottom bar is N08926 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 76
80
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
740

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1610
1460
Melting Onset (Solidus), °C 1560
1410
Specific Heat Capacity, J/kg-K 440
460
Thermal Conductivity, W/m-K 25
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 25
33
Density, g/cm3 8.3
8.1
Embodied Carbon, kg CO2/kg material 14
6.2
Embodied Energy, MJ/kg 210
84
Embodied Water, L/kg 110
200

Common Calculations

PREN (Pitting Resistance) 30
45
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26 to 72
25
Strength to Weight: Bending, points 23 to 45
22
Thermal Diffusivity, mm2/s 6.9
3.2
Thermal Shock Resistance, points 24 to 68
16

Alloy Composition

Carbon (C), % 1.3 to 1.4
0 to 0.020
Chromium (Cr), % 3.8 to 4.8
19 to 21
Copper (Cu), % 0 to 0.25
0.5 to 1.5
Iron (Fe), % 75.9 to 81.4
41.7 to 50.4
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 4.3 to 5.5
6.0 to 7.0
Nickel (Ni), % 0 to 0.3
24 to 26
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.45
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 5.3 to 6.5
0
Vanadium (V), % 3.8 to 4.5
0