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SAE-AISI 9254 Steel vs. N08811 Stainless Steel

Both SAE-AISI 9254 steel and N08811 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 47% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 9254 steel and the bottom bar is N08811 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
33
Fatigue Strength, MPa 280
150
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Shear Strength, MPa 410
340
Tensile Strength: Ultimate (UTS), MPa 660
510
Tensile Strength: Yield (Proof), MPa 410
190

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 410
1100
Melting Completion (Liquidus), °C 1440
1390
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 46
12
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
30
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 1.5
5.3
Embodied Energy, MJ/kg 20
76
Embodied Water, L/kg 49
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
130
Resilience: Unit (Modulus of Resilience), kJ/m3 450
94
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 12
3.0
Thermal Shock Resistance, points 20
13

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.6
Carbon (C), % 0.51 to 0.59
0.060 to 0.1
Chromium (Cr), % 0.6 to 0.8
19 to 23
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 96.1 to 97.1
39.5 to 50.6
Manganese (Mn), % 0.6 to 0.8
0 to 1.5
Nickel (Ni), % 0
30 to 35
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 1.2 to 1.6
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.6