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N08330 Stainless Steel vs. SAE-AISI 9255 Steel

Both N08330 stainless steel and SAE-AISI 9255 steel are iron alloys. Both are furnished in the annealed condition. They have 45% 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 N08330 stainless steel and the bottom bar is SAE-AISI 9255 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
21
Fatigue Strength, MPa 190
270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
72
Shear Strength, MPa 360
430
Tensile Strength: Ultimate (UTS), MPa 550
680
Tensile Strength: Yield (Proof), MPa 230
390

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Mechanical, °C 1050
400
Melting Completion (Liquidus), °C 1390
1430
Melting Onset (Solidus), °C 1340
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
46
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 32
2.0
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.4
1.5
Embodied Energy, MJ/kg 77
20
Embodied Water, L/kg 190
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
120
Resilience: Unit (Modulus of Resilience), kJ/m3 140
400
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
24
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 3.1
13
Thermal Shock Resistance, points 13
21

Alloy Composition

Carbon (C), % 0 to 0.080
0.51 to 0.59
Chromium (Cr), % 17 to 20
0
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 38.3 to 48.3
96.2 to 97
Lead (Pb), % 0 to 0.0050
0
Manganese (Mn), % 0 to 2.0
0.7 to 1.0
Nickel (Ni), % 34 to 37
0
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.75 to 1.5
1.8 to 2.2
Sulfur (S), % 0 to 0.030
0 to 0.040
Tin (Sn), % 0 to 0.025
0