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SAE-AISI H19 Steel vs. S31730 Stainless Steel

Both SAE-AISI H19 steel and S31730 stainless steel are iron alloys. They have 63% of their average alloy composition in common. There are 20 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 S31730 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
77
Tensile Strength: Ultimate (UTS), MPa 720 to 1990
540

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1540
1430
Melting Onset (Solidus), °C 1490
1390
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 22
24
Density, g/cm3 8.2
8.0
Embodied Carbon, kg CO2/kg material 7.5
4.6
Embodied Energy, MJ/kg 110
63
Embodied Water, L/kg 110
180

Common Calculations

PREN (Pitting Resistance) 13
30
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 68
19
Strength to Weight: Bending, points 22 to 43
18
Thermal Shock Resistance, points 21 to 59
12

Alloy Composition

Carbon (C), % 0.32 to 0.45
0 to 0.030
Chromium (Cr), % 4.0 to 4.8
17 to 19
Cobalt (Co), % 4.0 to 4.5
0
Copper (Cu), % 0 to 0.25
4.0 to 5.0
Iron (Fe), % 81.4 to 85.5
52.4 to 61
Manganese (Mn), % 0.2 to 0.5
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.55
3.0 to 4.0
Nickel (Ni), % 0 to 0.3
15 to 16.5
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 3.8 to 4.5
0
Vanadium (V), % 1.8 to 2.2
0