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SAE-AISI 81B45 Steel vs. EN 1.4162 Stainless Steel

Both SAE-AISI 81B45 steel and EN 1.4162 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 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 SAE-AISI 81B45 steel and the bottom bar is EN 1.4162 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 200
250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 24
32
Fatigue Strength, MPa 250 to 350
410
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 340 to 400
520
Tensile Strength: Ultimate (UTS), MPa 540 to 670
780
Tensile Strength: Yield (Proof), MPa 350 to 560
520

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 410
1000
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.5
2.6
Embodied Energy, MJ/kg 20
38
Embodied Water, L/kg 49
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 110
220
Resilience: Unit (Modulus of Resilience), kJ/m3 320 to 840
690
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19 to 24
28
Strength to Weight: Bending, points 19 to 22
25
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 17 to 21
21

Alloy Composition

Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.43 to 0.48
0 to 0.040
Chromium (Cr), % 0.35 to 0.55
21 to 22
Copper (Cu), % 0
0.1 to 0.8
Iron (Fe), % 97 to 98
67.2 to 73.3
Manganese (Mn), % 0.75 to 1.0
4.0 to 6.0
Molybdenum (Mo), % 0.080 to 0.15
0.1 to 0.8
Nickel (Ni), % 0.2 to 0.4
1.4 to 1.9
Nitrogen (N), % 0
0.2 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.015