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SAE-AISI M4 Steel vs. AISI 310S Stainless Steel

Both SAE-AISI M4 steel and AISI 310S stainless steel are iron alloys. They have 58% of their average alloy composition in common. There are 22 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 M4 steel and the bottom bar is AISI 310S stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
600 to 710

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1610
1450
Melting Onset (Solidus), °C 1560
1400
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 25
16
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 25
25
Density, g/cm3 8.3
7.9
Embodied Carbon, kg CO2/kg material 14
4.3
Embodied Energy, MJ/kg 210
61
Embodied Water, L/kg 110
190

Common Calculations

PREN (Pitting Resistance) 30
25
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 72
21 to 25
Strength to Weight: Bending, points 23 to 45
20 to 22
Thermal Diffusivity, mm2/s 6.9
4.1
Thermal Shock Resistance, points 24 to 68
14 to 16

Alloy Composition

Carbon (C), % 1.3 to 1.4
0 to 0.080
Chromium (Cr), % 3.8 to 4.8
24 to 26
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 75.9 to 81.4
48.3 to 57
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 4.3 to 5.5
0
Nickel (Ni), % 0 to 0.3
19 to 22
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.2 to 0.45
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 5.3 to 6.5
0
Vanadium (V), % 3.8 to 4.5
0