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AISI 441 Stainless Steel vs. S43037 Stainless Steel

Both AISI 441 stainless steel and S43037 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is AISI 441 stainless steel and the bottom bar is S43037 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
25
Fatigue Strength, MPa 180
160
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 77
77
Shear Modulus, GPa 77
77
Shear Strength, MPa 300
260
Tensile Strength: Ultimate (UTS), MPa 470
410
Tensile Strength: Yield (Proof), MPa 270
230

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 550
510
Maximum Temperature: Mechanical, °C 910
880
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 23
25
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.8
2.3
Embodied Energy, MJ/kg 41
32
Embodied Water, L/kg 130
120

Common Calculations

PREN (Pitting Resistance) 19
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
88
Resilience: Unit (Modulus of Resilience), kJ/m3 190
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
15
Strength to Weight: Bending, points 17
16
Thermal Diffusivity, mm2/s 6.1
6.7
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17.5 to 19.5
16 to 19
Iron (Fe), % 76 to 82.2
77.9 to 83.9
Manganese (Mn), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 0 to 1.0
0
Niobium (Nb), % 0.3 to 0.9
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0.1 to 0.5
0.1 to 1.0