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SAE-AISI H19 Steel vs. SAE-AISI A9 Steel

Both SAE-AISI H19 steel and SAE-AISI A9 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H19 steel and the bottom bar is SAE-AISI A9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
74
Tensile Strength: Ultimate (UTS), MPa 720 to 1990
770 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Melting Completion (Liquidus), °C 1540
1460
Melting Onset (Solidus), °C 1490
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 29
35
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 22
7.0
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 7.5
4.7
Embodied Energy, MJ/kg 110
70
Embodied Water, L/kg 110
82

Common Calculations

PREN (Pitting Resistance) 13
10
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 68
28 to 73
Strength to Weight: Bending, points 22 to 43
24 to 46
Thermal Diffusivity, mm2/s 7.9
9.6
Thermal Shock Resistance, points 21 to 59
25 to 66

Alloy Composition

Carbon (C), % 0.32 to 0.45
0.45 to 0.55
Chromium (Cr), % 4.0 to 4.8
4.8 to 5.5
Cobalt (Co), % 4.0 to 4.5
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 81.4 to 85.5
87 to 90.5
Manganese (Mn), % 0.2 to 0.5
0 to 0.5
Molybdenum (Mo), % 0.3 to 0.55
1.3 to 1.8
Nickel (Ni), % 0 to 0.3
1.3 to 1.8
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.5
1.0 to 1.2
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
0.8 to 1.4

Comparable Variants