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SAE-AISI M4 Steel vs. AWS ER90S-B3

Both SAE-AISI M4 steel and AWS ER90S-B3 are iron alloys. They have 83% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M4 steel and the bottom bar is AWS ER90S-B3.

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
73
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
690

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1610
1460
Melting Onset (Solidus), °C 1560
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 25
40
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
4.1
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 14
1.8
Embodied Energy, MJ/kg 210
24
Embodied Water, L/kg 110
60

Common Calculations

PREN (Pitting Resistance) 30
6.0
Stiffness to Weight: Axial, points 13
13
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
11
Thermal Shock Resistance, points 24 to 68
20

Alloy Composition

Carbon (C), % 1.3 to 1.4
0.070 to 0.12
Chromium (Cr), % 3.8 to 4.8
2.3 to 2.7
Copper (Cu), % 0 to 0.25
0 to 0.35
Iron (Fe), % 75.9 to 81.4
93.5 to 95.9
Manganese (Mn), % 0.15 to 0.4
0.4 to 0.7
Molybdenum (Mo), % 4.3 to 5.5
0.9 to 1.2
Nickel (Ni), % 0 to 0.3
0 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.45
0.4 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 5.3 to 6.5
0
Vanadium (V), % 3.8 to 4.5
0
Residuals, % 0
0 to 0.5