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SAE-AISI M50 Steel vs. ASTM A369 Grade FP22

Both SAE-AISI M50 steel and ASTM A369 grade FP22 are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M50 steel and the bottom bar is ASTM A369 grade FP22.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
74
Tensile Strength: Ultimate (UTS), MPa 720 to 2250
470

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1480
1470
Melting Onset (Solidus), °C 1440
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 35
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.7
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 10
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
3.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 5.1
1.7
Embodied Energy, MJ/kg 74
23
Embodied Water, L/kg 83
58

Common Calculations

PREN (Pitting Resistance) 19
5.5
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 80
17
Strength to Weight: Bending, points 23 to 49
17
Thermal Diffusivity, mm2/s 9.7
11
Thermal Shock Resistance, points 21 to 66
14

Alloy Composition

Carbon (C), % 0.78 to 0.88
0.050 to 0.15
Chromium (Cr), % 3.8 to 4.5
1.9 to 2.6
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 87 to 90.4
95 to 96.9
Manganese (Mn), % 0.15 to 0.45
0.3 to 0.6
Molybdenum (Mo), % 3.9 to 4.8
0.87 to 1.1
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.6
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0.8 to 1.3
0