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AISI 321H Stainless Steel vs. SAE-AISI 9310 Steel

Both AISI 321H stainless steel and SAE-AISI 9310 steel are iron alloys. They have 75% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 321H stainless steel and the bottom bar is SAE-AISI 9310 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
540 to 610
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
17 to 19
Fatigue Strength, MPa 200
300 to 390
Poisson's Ratio 0.28
0.29
Rockwell B Hardness 82
240 to 270
Shear Modulus, GPa 77
73
Shear Strength, MPa 400
510 to 570
Tensile Strength: Ultimate (UTS), MPa 580
820 to 910
Tensile Strength: Yield (Proof), MPa 230
450 to 570

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 940
440
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
48
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 16
4.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.2
1.8
Embodied Energy, MJ/kg 46
24
Embodied Water, L/kg 140
57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
120 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 140
540 to 860
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
29 to 32
Strength to Weight: Bending, points 20
25 to 27
Thermal Diffusivity, mm2/s 4.0
13
Thermal Shock Resistance, points 12
24 to 27

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.080 to 0.13
Chromium (Cr), % 17 to 19
1.0 to 1.4
Iron (Fe), % 65.4 to 74
93.8 to 95.2
Manganese (Mn), % 0 to 2.0
0.45 to 0.65
Molybdenum (Mo), % 0
0.080 to 0.15
Nickel (Ni), % 9.0 to 12
3.0 to 3.5
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 0.75
0.2 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.012
Titanium (Ti), % 0 to 0.7
0