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S32803 Stainless Steel vs. S43037 Stainless Steel

Both S32803 stainless steel and S43037 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 83% of their average alloy composition in common.

For each property being compared, the top bar is S32803 stainless steel and the bottom bar is S43037 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
160
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 18
25
Fatigue Strength, MPa 350
160
Poisson's Ratio 0.27
0.28
Rockwell B Hardness 86
77
Shear Modulus, GPa 81
77
Shear Strength, MPa 420
260
Tensile Strength: Ultimate (UTS), MPa 680
410
Tensile Strength: Yield (Proof), MPa 560
230

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 510
510
Maximum Temperature: Mechanical, °C 1100
880
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
25
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 19
9.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.7
2.3
Embodied Energy, MJ/kg 53
32
Embodied Water, L/kg 180
120

Common Calculations

PREN (Pitting Resistance) 36
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
88
Resilience: Unit (Modulus of Resilience), kJ/m3 760
130
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
15
Strength to Weight: Bending, points 22
16
Thermal Diffusivity, mm2/s 4.4
6.7
Thermal Shock Resistance, points 22
14

Alloy Composition

Carbon (C), % 0 to 0.015
0 to 0.030
Chromium (Cr), % 28 to 29
16 to 19
Iron (Fe), % 62.9 to 67.1
77.9 to 83.9
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 1.8 to 2.5
0
Nickel (Ni), % 3.0 to 4.0
0
Niobium (Nb), % 0.15 to 0.5
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.55
0 to 1.0
Sulfur (S), % 0 to 0.0035
0 to 0.030
Titanium (Ti), % 0
0.1 to 1.0