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S41045 Stainless Steel vs. N08925 Stainless Steel

Both S41045 stainless steel and N08925 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 60% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S41045 stainless 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, % 25
45
Fatigue Strength, MPa 160
310
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Shear Strength, MPa 280
470
Tensile Strength: Ultimate (UTS), MPa 430
680
Tensile Strength: Yield (Proof), MPa 230
340

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 430
420
Maximum Temperature: Mechanical, °C 740
1100
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 29
13
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
33
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 2.2
6.2
Embodied Energy, MJ/kg 31
84
Embodied Water, L/kg 100
200

Common Calculations

PREN (Pitting Resistance) 13
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
250
Resilience: Unit (Modulus of Resilience), kJ/m3 140
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 16
23
Strength to Weight: Bending, points 16
21
Thermal Diffusivity, mm2/s 7.8
3.5
Thermal Shock Resistance, points 16
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.020
Chromium (Cr), % 12 to 13
19 to 21
Copper (Cu), % 0
0.8 to 1.5
Iron (Fe), % 83.8 to 88
42.7 to 50.1
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.5
24 to 26
Niobium (Nb), % 0 to 0.6
0
Nitrogen (N), % 0 to 0.030
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030