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ASTM A182 Grade F122 vs. SAE-AISI M4 Steel

Both ASTM A182 grade F122 and SAE-AISI M4 steel are iron alloys. They have 87% 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 ASTM A182 grade F122 and the bottom bar is SAE-AISI M4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 710
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1490
1610
Melting Onset (Solidus), °C 1440
1560
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 24
25
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
25
Density, g/cm3 8.0
8.3
Embodied Carbon, kg CO2/kg material 3.0
14
Embodied Energy, MJ/kg 44
210
Embodied Water, L/kg 100
110

Common Calculations

PREN (Pitting Resistance) 17
30
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 25
26 to 72
Strength to Weight: Bending, points 22
23 to 45
Thermal Diffusivity, mm2/s 6.4
6.9
Thermal Shock Resistance, points 19
24 to 68

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Boron (B), % 0 to 0.0050
0
Carbon (C), % 0.070 to 0.14
1.3 to 1.4
Chromium (Cr), % 10 to 11.5
3.8 to 4.8
Copper (Cu), % 0.3 to 1.7
0 to 0.25
Iron (Fe), % 81.3 to 87.7
75.9 to 81.4
Manganese (Mn), % 0 to 0.7
0.15 to 0.4
Molybdenum (Mo), % 0.25 to 0.6
4.3 to 5.5
Nickel (Ni), % 0 to 0.5
0 to 0.3
Niobium (Nb), % 0.040 to 0.1
0
Nitrogen (N), % 0.040 to 0.1
0
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 0.5
0.2 to 0.45
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 1.5 to 2.5
5.3 to 6.5
Vanadium (V), % 0.15 to 0.3
3.8 to 4.5
Zirconium (Zr), % 0 to 0.010
0