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AISI 440A Stainless Steel vs. S45000 Stainless Steel

Both AISI 440A stainless steel and S45000 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 440A stainless steel and the bottom bar is S45000 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 5.0 to 20
6.8 to 14
Fatigue Strength, MPa 270 to 790
330 to 650
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 450 to 1040
590 to 830
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
980 to 1410
Tensile Strength: Yield (Proof), MPa 420 to 1650
580 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 400
400
Maximum Temperature: Mechanical, °C 760
840
Melting Completion (Liquidus), °C 1480
1440
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 23
17
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
13
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
2.8
Embodied Energy, MJ/kg 31
39
Embodied Water, L/kg 120
130

Common Calculations

PREN (Pitting Resistance) 18
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
94 to 160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 65
35 to 50
Strength to Weight: Bending, points 23 to 43
28 to 36
Thermal Diffusivity, mm2/s 6.2
4.5
Thermal Shock Resistance, points 26 to 65
33 to 47

Alloy Composition

Carbon (C), % 0.6 to 0.75
0 to 0.050
Chromium (Cr), % 16 to 18
14 to 16
Copper (Cu), % 0
1.3 to 1.8
Iron (Fe), % 78.4 to 83.4
72.1 to 79.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.75
0.5 to 1.0
Nickel (Ni), % 0
5.0 to 7.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030

Comparable Variants