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SAE-AISI 1345 Steel vs. N08925 Stainless Steel

Both SAE-AISI 1345 steel and N08925 stainless steel are iron alloys. 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 (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1345 steel and the bottom bar is N08925 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 23
45
Fatigue Strength, MPa 230 to 390
310
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
80
Shear Strength, MPa 370 to 440
470
Tensile Strength: Ultimate (UTS), MPa 590 to 730
680
Tensile Strength: Yield (Proof), MPa 330 to 620
340

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 51
13
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
33
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 1.4
6.2
Embodied Energy, MJ/kg 19
84
Embodied Water, L/kg 48
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78 to 120
250
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 1040
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21 to 26
23
Strength to Weight: Bending, points 20 to 23
21
Thermal Diffusivity, mm2/s 14
3.5
Thermal Shock Resistance, points 19 to 23
15

Alloy Composition

Carbon (C), % 0.43 to 0.48
0 to 0.020
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 0
0.8 to 1.5
Iron (Fe), % 97.2 to 97.8
42.7 to 50.1
Manganese (Mn), % 1.6 to 1.9
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
24 to 26
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.030