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SAE-AISI H19 Steel vs. ACI-ASTM CH20 Steel

Both SAE-AISI H19 steel and ACI-ASTM CH20 steel are iron alloys. They have 66% 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 CH20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 75
78
Tensile Strength: Ultimate (UTS), MPa 720 to 1990
610

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1540
1410
Melting Onset (Solidus), °C 1490
1430
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 29
14
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 22
20
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 7.5
3.7
Embodied Energy, MJ/kg 110
53
Embodied Water, L/kg 110
180

Common Calculations

PREN (Pitting Resistance) 13
25
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 68
22
Strength to Weight: Bending, points 22 to 43
21
Thermal Diffusivity, mm2/s 7.9
3.7
Thermal Shock Resistance, points 21 to 59
15

Alloy Composition

Carbon (C), % 0.32 to 0.45
0 to 0.2
Chromium (Cr), % 4.0 to 4.8
22 to 26
Cobalt (Co), % 4.0 to 4.5
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81.4 to 85.5
54.7 to 66
Manganese (Mn), % 0.2 to 0.5
0 to 1.5
Molybdenum (Mo), % 0.3 to 0.55
0 to 0.5
Nickel (Ni), % 0 to 0.3
12 to 15
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