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SAE-AISI 81B45 Steel vs. EN 1.4477 Stainless Steel

Both SAE-AISI 81B45 steel and EN 1.4477 stainless steel are iron alloys. They have 62% 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 1.4477 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 200
270
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 12 to 24
22 to 23
Fatigue Strength, MPa 250 to 350
420 to 490
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
81
Shear Strength, MPa 340 to 400
550 to 580
Tensile Strength: Ultimate (UTS), MPa 540 to 670
880 to 930
Tensile Strength: Yield (Proof), MPa 350 to 560
620 to 730

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 410
1100
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
13
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
20
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.5
3.7
Embodied Energy, MJ/kg 20
52
Embodied Water, L/kg 49
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 110
180 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 320 to 840
940 to 1290
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19 to 24
31 to 33
Strength to Weight: Bending, points 19 to 22
26 to 27
Thermal Diffusivity, mm2/s 11
3.5
Thermal Shock Resistance, points 17 to 21
23 to 25

Alloy Composition

Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.43 to 0.48
0 to 0.030
Chromium (Cr), % 0.35 to 0.55
28 to 30
Copper (Cu), % 0
0 to 0.8
Iron (Fe), % 97 to 98
56.6 to 63.6
Manganese (Mn), % 0.75 to 1.0
0.8 to 1.5
Molybdenum (Mo), % 0.080 to 0.15
1.5 to 2.6
Nickel (Ni), % 0.2 to 0.4
5.8 to 7.5
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.015

Comparable Variants