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SAE-AISI H19 Steel vs. ACI-ASTM CT15C Steel

Both SAE-AISI H19 steel and ACI-ASTM CT15C steel are iron alloys. They have 50% 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 CT15C 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
76
Tensile Strength: Ultimate (UTS), MPa 720 to 1990
500

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1540
1410
Melting Onset (Solidus), °C 1490
1360
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 29
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 22
36
Density, g/cm3 8.2
8.0
Embodied Carbon, kg CO2/kg material 7.5
6.1
Embodied Energy, MJ/kg 110
88
Embodied Water, L/kg 110
190

Common Calculations

PREN (Pitting Resistance) 13
20
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 68
17
Strength to Weight: Bending, points 22 to 43
17
Thermal Diffusivity, mm2/s 7.9
3.2
Thermal Shock Resistance, points 21 to 59
12

Alloy Composition

Carbon (C), % 0.32 to 0.45
0.050 to 0.15
Chromium (Cr), % 4.0 to 4.8
19 to 21
Cobalt (Co), % 4.0 to 4.5
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81.4 to 85.5
40.3 to 49.2
Manganese (Mn), % 0.2 to 0.5
0.15 to 1.5
Molybdenum (Mo), % 0.3 to 0.55
0
Nickel (Ni), % 0 to 0.3
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.5
0.15 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 3.8 to 4.5
0
Vanadium (V), % 1.8 to 2.2
0