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Annealed AISI 440A vs. Annealed S35000 Stainless Steel

Both annealed AISI 440A and annealed S35000 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 93% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is annealed AISI 440A and the bottom bar is annealed S35000 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 20
14
Fatigue Strength, MPa 270
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 450
950
Tensile Strength: Ultimate (UTS), MPa 730
1570
Tensile Strength: Yield (Proof), MPa 420
660

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 400
410
Maximum Temperature: Mechanical, °C 760
900
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
16
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
14
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
3.2
Embodied Energy, MJ/kg 31
44
Embodied Water, L/kg 120
130

Common Calculations

PREN (Pitting Resistance) 18
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
170
Resilience: Unit (Modulus of Resilience), kJ/m3 440
1070
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26
56
Strength to Weight: Bending, points 23
38
Thermal Diffusivity, mm2/s 6.2
4.4
Thermal Shock Resistance, points 26
51

Alloy Composition

Carbon (C), % 0.6 to 0.75
0.070 to 0.11
Chromium (Cr), % 16 to 18
16 to 17
Iron (Fe), % 78.4 to 83.4
72.7 to 76.9
Manganese (Mn), % 0 to 1.0
0.5 to 1.3
Molybdenum (Mo), % 0 to 0.75
2.5 to 3.2
Nickel (Ni), % 0
4.0 to 5.0
Nitrogen (N), % 0
0.070 to 0.13
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.030