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EN 1.4024 Stainless Steel vs. SAE-AISI 81B45 Steel

Both EN 1.4024 stainless steel and SAE-AISI 81B45 steel are iron alloys. They have 87% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4024 stainless steel and the bottom bar is SAE-AISI 81B45 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 15 to 22
12 to 24
Fatigue Strength, MPa 220 to 300
250 to 350
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 370 to 460
340 to 400
Tensile Strength: Ultimate (UTS), MPa 590 to 750
540 to 670
Tensile Strength: Yield (Proof), MPa 330 to 510
350 to 560

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 760
410
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 30
40
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
2.3
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.9
1.5
Embodied Energy, MJ/kg 27
20
Embodied Water, L/kg 100
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 110
77 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 660
320 to 840
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 27
19 to 24
Strength to Weight: Bending, points 20 to 24
19 to 22
Thermal Diffusivity, mm2/s 8.1
11
Thermal Shock Resistance, points 21 to 26
17 to 21

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0.12 to 0.17
0.43 to 0.48
Chromium (Cr), % 12 to 14
0.35 to 0.55
Iron (Fe), % 83.8 to 87.9
97 to 98
Manganese (Mn), % 0 to 1.0
0.75 to 1.0
Molybdenum (Mo), % 0
0.080 to 0.15
Nickel (Ni), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.040

Comparable Variants