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S40910 Stainless Steel vs. S32803 Stainless Steel

Both S40910 stainless steel and S32803 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 77% of their average alloy composition in common.

For each property being compared, the top bar is S40910 stainless steel and the bottom bar is S32803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
210
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 23
18
Fatigue Strength, MPa 130
350
Poisson's Ratio 0.28
0.27
Rockwell B Hardness 76
86
Shear Modulus, GPa 75
81
Shear Strength, MPa 270
420
Tensile Strength: Ultimate (UTS), MPa 430
680
Tensile Strength: Yield (Proof), MPa 190
560

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 440
510
Maximum Temperature: Mechanical, °C 710
1100
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 26
16
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
19
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.0
3.7
Embodied Energy, MJ/kg 28
53
Embodied Water, L/kg 94
180

Common Calculations

PREN (Pitting Resistance) 11
36
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
120
Resilience: Unit (Modulus of Resilience), kJ/m3 94
760
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 16
25
Strength to Weight: Bending, points 16
22
Thermal Diffusivity, mm2/s 6.9
4.4
Thermal Shock Resistance, points 16
22

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.015
Chromium (Cr), % 10.5 to 11.7
28 to 29
Iron (Fe), % 85 to 89.5
62.9 to 67.1
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 0
1.8 to 2.5
Nickel (Ni), % 0 to 0.5
3.0 to 4.0
Niobium (Nb), % 0 to 0.17
0.15 to 0.5
Nitrogen (N), % 0 to 0.030
0 to 0.020
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.55
Sulfur (S), % 0 to 0.020
0 to 0.0035
Titanium (Ti), % 0 to 0.5
0