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SAE-AISI M3 Class 1 Steel vs. Austenitic Grey Cast Iron

Both SAE-AISI M3 class 1 steel and austenitic grey cast iron are iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M3 class 1 steel and the bottom bar is austenitic grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
180
Poisson's Ratio 0.29
0.29 to 0.3
Shear Modulus, GPa 77
69 to 72
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
150 to 230

Thermal Properties

Latent Heat of Fusion, J/g 260
280 to 350
Melting Completion (Liquidus), °C 1610
1340 to 1400
Melting Onset (Solidus), °C 1570
1290 to 1350
Specific Heat Capacity, J/kg-K 440
470 to 490
Thermal Expansion, µm/m-K 12
13 to 14

Otherwise Unclassified Properties

Base Metal Price, % relative 25
14 to 24
Density, g/cm3 8.3
7.7 to 8.1
Embodied Carbon, kg CO2/kg material 10
3.1 to 4.7
Embodied Energy, MJ/kg 150
43 to 65
Embodied Water, L/kg 100
93 to 120

Common Calculations

PREN (Pitting Resistance) 33
2.0 to 5.0
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
23 to 25
Strength to Weight: Axial, points 26 to 72
5.3 to 8.2
Strength to Weight: Bending, points 22 to 44
7.9 to 11
Thermal Shock Resistance, points 24 to 67
4.5 to 6.5