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SAE-AISI M4 Steel vs. S28200 Stainless Steel

Both SAE-AISI M4 steel and S28200 stainless steel are iron alloys. They have 67% 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 M4 steel and the bottom bar is S28200 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
77
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
870

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1610
1380
Melting Onset (Solidus), °C 1560
1330
Specific Heat Capacity, J/kg-K 440
480
Thermal Expansion, µm/m-K 12
18

Otherwise Unclassified Properties

Base Metal Price, % relative 25
12
Density, g/cm3 8.3
7.6
Embodied Carbon, kg CO2/kg material 14
2.8
Embodied Energy, MJ/kg 210
41
Embodied Water, L/kg 110
160

Common Calculations

PREN (Pitting Resistance) 30
29
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
26
Strength to Weight: Axial, points 26 to 72
32
Strength to Weight: Bending, points 23 to 45
27
Thermal Shock Resistance, points 24 to 68
17

Alloy Composition

Carbon (C), % 1.3 to 1.4
0 to 0.15
Chromium (Cr), % 3.8 to 4.8
17 to 19
Copper (Cu), % 0 to 0.25
0.75 to 1.3
Iron (Fe), % 75.9 to 81.4
57.7 to 64.1
Manganese (Mn), % 0.15 to 0.4
17 to 19
Molybdenum (Mo), % 4.3 to 5.5
0.75 to 1.3
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0.4 to 0.6
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.2 to 0.45
0 to 1.0
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