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SAE-AISI H19 Steel vs. ACI-ASTM CG12 Steel

Both SAE-AISI H19 steel and ACI-ASTM CG12 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 (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H19 steel and the bottom bar is ACI-ASTM CG12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
78
Tensile Strength: Ultimate (UTS), MPa 720 to 1990
550

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1540
1410
Melting Onset (Solidus), °C 1490
1370
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 29
15
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 22
18
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 7.5
3.3
Embodied Energy, MJ/kg 110
48
Embodied Water, L/kg 110
160

Common Calculations

PREN (Pitting Resistance) 13
22
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 68
20
Strength to Weight: Bending, points 22 to 43
19
Thermal Diffusivity, mm2/s 7.9
4.0
Thermal Shock Resistance, points 21 to 59
12

Alloy Composition

Carbon (C), % 0.32 to 0.45
0 to 0.12
Chromium (Cr), % 4.0 to 4.8
20 to 23
Cobalt (Co), % 4.0 to 4.5
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81.4 to 85.5
60.3 to 70
Manganese (Mn), % 0.2 to 0.5
0 to 1.5
Molybdenum (Mo), % 0.3 to 0.55
0
Nickel (Ni), % 0 to 0.3
10 to 13
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.5
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 3.8 to 4.5
0
Vanadium (V), % 1.8 to 2.2
0