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SAE-AISI M42 Steel vs. ASTM A182 Grade F911

Both SAE-AISI M42 steel and ASTM A182 grade F911 are iron alloys. They have 86% 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 M42 steel and the bottom bar is ASTM A182 grade F911.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
690

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1540
1480
Melting Onset (Solidus), °C 1490
1440
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 20
26
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 30
9.5
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 7.4
2.8
Embodied Energy, MJ/kg 100
40
Embodied Water, L/kg 140
90

Common Calculations

PREN (Pitting Resistance) 38
15
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 28 to 79
24
Strength to Weight: Bending, points 24 to 48
22
Thermal Diffusivity, mm2/s 5.4
6.9
Thermal Shock Resistance, points 25 to 71
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.00030 to 0.0060
Carbon (C), % 1.1 to 1.2
0.090 to 0.13
Chromium (Cr), % 3.5 to 4.3
8.5 to 9.5
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 76.3 to 81
86.2 to 88.9
Manganese (Mn), % 0.15 to 0.4
0.3 to 0.6
Molybdenum (Mo), % 9.0 to 10
0.9 to 1.1
Nickel (Ni), % 0 to 0.3
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.040 to 0.090
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.15 to 0.65
0.1 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 1.2 to 1.9
0.9 to 1.1
Vanadium (V), % 1.0 to 1.4
0.18 to 0.25
Zirconium (Zr), % 0
0 to 0.010