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SAE-AISI H19 Steel vs. S31655 Stainless Steel

Both SAE-AISI H19 steel and S31655 stainless steel are iron alloys. They have 73% 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 S31655 stainless 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
710

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1540
1430
Melting Onset (Solidus), °C 1490
1380
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
17
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 7.5
3.3
Embodied Energy, MJ/kg 110
46
Embodied Water, L/kg 110
160

Common Calculations

PREN (Pitting Resistance) 13
27
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 68
25
Strength to Weight: Bending, points 22 to 43
23
Thermal Diffusivity, mm2/s 7.9
4.0
Thermal Shock Resistance, points 21 to 59
16

Alloy Composition

Carbon (C), % 0.32 to 0.45
0 to 0.030
Chromium (Cr), % 4.0 to 4.8
19.5 to 21.5
Cobalt (Co), % 4.0 to 4.5
0
Copper (Cu), % 0 to 0.25
0 to 1.0
Iron (Fe), % 81.4 to 85.5
63.2 to 71.9
Manganese (Mn), % 0.2 to 0.5
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.55
0.5 to 1.5
Nickel (Ni), % 0 to 0.3
8.0 to 9.5
Nitrogen (N), % 0
0.14 to 0.25
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.2 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 3.8 to 4.5
0
Vanadium (V), % 1.8 to 2.2
0