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SAE-AISI H19 Steel vs. S44725 Stainless Steel

Both SAE-AISI H19 steel and S44725 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H19 steel and the bottom bar is S44725 stainless 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
81
Tensile Strength: Ultimate (UTS), MPa 720 to 1990
500

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1540
1450
Melting Onset (Solidus), °C 1490
1410
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 29
17
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 22
15
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 7.5
3.1
Embodied Energy, MJ/kg 110
44
Embodied Water, L/kg 110
170

Common Calculations

PREN (Pitting Resistance) 13
33
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 68
18
Strength to Weight: Bending, points 22 to 43
18
Thermal Diffusivity, mm2/s 7.9
4.6
Thermal Shock Resistance, points 21 to 59
16

Alloy Composition

Carbon (C), % 0.32 to 0.45
0 to 0.015
Chromium (Cr), % 4.0 to 4.8
25 to 28.5
Cobalt (Co), % 4.0 to 4.5
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81.4 to 85.5
67.6 to 73.5
Manganese (Mn), % 0.2 to 0.5
0 to 0.4
Molybdenum (Mo), % 0.3 to 0.55
1.5 to 2.5
Nickel (Ni), % 0 to 0.3
0 to 0.3
Niobium (Nb), % 0
0 to 0.26
Nitrogen (N), % 0
0 to 0.018
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.5
0 to 0.040
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.26
Tungsten (W), % 3.8 to 4.5
0
Vanadium (V), % 1.8 to 2.2
0