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AISI 205 Stainless Steel vs. SAE-AISI 81B45 Steel

Both AISI 205 stainless steel and SAE-AISI 81B45 steel are iron alloys. They have 67% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AISI 205 stainless steel and the bottom bar is SAE-AISI 81B45 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 440
160 to 200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11 to 51
12 to 24
Fatigue Strength, MPa 410 to 640
250 to 350
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 560 to 850
340 to 400
Tensile Strength: Ultimate (UTS), MPa 800 to 1430
540 to 670
Tensile Strength: Yield (Proof), MPa 450 to 1100
350 to 560

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 880
410
Melting Completion (Liquidus), °C 1380
1460
Melting Onset (Solidus), °C 1340
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 18
12

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.3
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.5
Embodied Energy, MJ/kg 37
20
Embodied Water, L/kg 150
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 430
77 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 510 to 3060
320 to 840
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 29 to 52
19 to 24
Strength to Weight: Bending, points 25 to 37
19 to 22
Thermal Shock Resistance, points 16 to 29
17 to 21

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0.12 to 0.25
0.43 to 0.48
Chromium (Cr), % 16.5 to 18.5
0.35 to 0.55
Iron (Fe), % 62.6 to 68.1
97 to 98
Manganese (Mn), % 14 to 15.5
0.75 to 1.0
Molybdenum (Mo), % 0
0.080 to 0.15
Nickel (Ni), % 1.0 to 1.7
0.2 to 0.4
Nitrogen (N), % 0.32 to 0.4
0
Phosphorus (P), % 0 to 0.060
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040

Comparable Variants