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ACI-ASTM CG8M Steel vs. SAE-AISI H19 Steel

Both ACI-ASTM CG8M steel and SAE-AISI H19 steel are iron alloys. They have 70% 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 ACI-ASTM CG8M steel and the bottom bar is SAE-AISI H19 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
75
Tensile Strength: Ultimate (UTS), MPa 550
720 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1450
1540
Melting Onset (Solidus), °C 1400
1490
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 16
29
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 20
22
Density, g/cm3 7.9
8.2
Embodied Carbon, kg CO2/kg material 4.1
7.5
Embodied Energy, MJ/kg 56
110
Embodied Water, L/kg 160
110

Common Calculations

PREN (Pitting Resistance) 31
13
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
24 to 68
Strength to Weight: Bending, points 19
22 to 43
Thermal Diffusivity, mm2/s 4.3
7.9
Thermal Shock Resistance, points 12
21 to 59

Alloy Composition

Carbon (C), % 0 to 0.080
0.32 to 0.45
Chromium (Cr), % 18 to 21
4.0 to 4.8
Cobalt (Co), % 0
4.0 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 58.8 to 70
81.4 to 85.5
Manganese (Mn), % 0 to 1.5
0.2 to 0.5
Molybdenum (Mo), % 3.0 to 4.0
0.3 to 0.55
Nickel (Ni), % 9.0 to 13
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.5
0.2 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
3.8 to 4.5
Vanadium (V), % 0
1.8 to 2.2