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N08904 Stainless Steel vs. S44537 Stainless Steel

Both N08904 stainless steel and S44537 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 68% of their average alloy composition in common.

For each property being compared, the top bar is N08904 stainless steel and the bottom bar is S44537 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 38
21
Fatigue Strength, MPa 200
230
Poisson's Ratio 0.28
0.27
Rockwell B Hardness 77
80
Shear Modulus, GPa 79
79
Shear Strength, MPa 370
320
Tensile Strength: Ultimate (UTS), MPa 540
510
Tensile Strength: Yield (Proof), MPa 240
360

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 430
530
Maximum Temperature: Mechanical, °C 1100
1000
Melting Completion (Liquidus), °C 1440
1480
Melting Onset (Solidus), °C 1390
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
21
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 32
19
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 5.8
3.4
Embodied Energy, MJ/kg 79
50
Embodied Water, L/kg 200
140

Common Calculations

PREN (Pitting Resistance) 37
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
95
Resilience: Unit (Modulus of Resilience), kJ/m3 150
320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
18
Strength to Weight: Bending, points 18
18
Thermal Diffusivity, mm2/s 3.1
5.6
Thermal Shock Resistance, points 12
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 19 to 23
20 to 24
Copper (Cu), % 1.0 to 2.0
0 to 0.5
Iron (Fe), % 38.8 to 53
69 to 78.6
Lanthanum (La), % 0
0.040 to 0.2
Manganese (Mn), % 0 to 2.0
0 to 0.8
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 23 to 28
0 to 0.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0 to 0.1
0 to 0.040
Phosphorus (P), % 0 to 0.045
0 to 0.050
Silicon (Si), % 0 to 1.0
0.1 to 0.6
Sulfur (S), % 0 to 0.035
0 to 0.0060
Titanium (Ti), % 0
0.020 to 0.2
Tungsten (W), % 0
1.0 to 3.0