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SAE-AISI H19 Steel vs. AISI 321 Stainless Steel

Both SAE-AISI H19 steel and AISI 321 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H19 steel and the bottom bar is AISI 321 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
590 to 690

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1540
1430
Melting Onset (Solidus), °C 1490
1400
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 29
16
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 22
16
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 7.5
3.2
Embodied Energy, MJ/kg 110
45
Embodied Water, L/kg 110
140

Common Calculations

PREN (Pitting Resistance) 13
19
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 68
21 to 25
Strength to Weight: Bending, points 22 to 43
20 to 22
Thermal Diffusivity, mm2/s 7.9
4.1
Thermal Shock Resistance, points 21 to 59
13 to 15

Alloy Composition

Carbon (C), % 0.32 to 0.45
0 to 0.080
Chromium (Cr), % 4.0 to 4.8
17 to 19
Cobalt (Co), % 4.0 to 4.5
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81.4 to 85.5
65.3 to 74
Manganese (Mn), % 0.2 to 0.5
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.55
0
Nickel (Ni), % 0 to 0.3
9.0 to 12
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.2 to 0.5
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.7
Tungsten (W), % 3.8 to 4.5
0
Vanadium (V), % 1.8 to 2.2
0