MakeItFrom.com
Menu (ESC)

SAE-AISI M4 Steel vs. S38815 Stainless Steel

Both SAE-AISI M4 steel and S38815 stainless steel are iron alloys. They have 68% 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 M4 steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 76
74
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
610

Thermal Properties

Latent Heat of Fusion, J/g 260
370
Melting Completion (Liquidus), °C 1610
1360
Melting Onset (Solidus), °C 1560
1310
Specific Heat Capacity, J/kg-K 440
500
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 25
19
Density, g/cm3 8.3
7.5
Embodied Carbon, kg CO2/kg material 14
3.8
Embodied Energy, MJ/kg 210
54
Embodied Water, L/kg 110
140

Common Calculations

PREN (Pitting Resistance) 30
18
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 72
22
Strength to Weight: Bending, points 23 to 45
21
Thermal Shock Resistance, points 24 to 68
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 1.3 to 1.4
0 to 0.030
Chromium (Cr), % 3.8 to 4.8
13 to 15
Copper (Cu), % 0 to 0.25
0.75 to 1.5
Iron (Fe), % 75.9 to 81.4
56.1 to 67
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 4.3 to 5.5
0.75 to 1.5
Nickel (Ni), % 0 to 0.3
13 to 17
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.45
5.5 to 6.5
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 5.3 to 6.5
0
Vanadium (V), % 3.8 to 4.5
0