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S21904 Stainless Steel vs. SAE-AISI 9310 Steel

Both S21904 stainless steel and SAE-AISI 9310 steel are iron alloys. They have 69% of their average alloy composition in common. There are 31 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 S21904 stainless steel and the bottom bar is SAE-AISI 9310 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
540 to 610
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17 to 51
17 to 19
Fatigue Strength, MPa 380 to 550
300 to 390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 510 to 620
510 to 570
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
820 to 910
Tensile Strength: Yield (Proof), MPa 390 to 910
450 to 570

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 980
440
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
48
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 15
4.4
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.0
1.8
Embodied Energy, MJ/kg 43
24
Embodied Water, L/kg 160
57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
120 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
540 to 860
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 36
29 to 32
Strength to Weight: Bending, points 23 to 29
25 to 27
Thermal Diffusivity, mm2/s 3.8
13
Thermal Shock Resistance, points 15 to 21
24 to 27

Alloy Composition

Carbon (C), % 0 to 0.040
0.080 to 0.13
Chromium (Cr), % 19 to 21.5
1.0 to 1.4
Iron (Fe), % 59.5 to 67.4
93.8 to 95.2
Manganese (Mn), % 8.0 to 10
0.45 to 0.65
Molybdenum (Mo), % 0
0.080 to 0.15
Nickel (Ni), % 5.5 to 7.5
3.0 to 3.5
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 1.0
0.2 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.012

Comparable Variants