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S13800 Stainless Steel vs. SAE-AISI 81B45 Steel

Both S13800 stainless steel and SAE-AISI 81B45 steel are iron alloys. They have 76% 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 S13800 stainless steel and the bottom bar is SAE-AISI 81B45 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 290 to 480
160 to 200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11 to 18
12 to 24
Fatigue Strength, MPa 410 to 870
250 to 350
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 610 to 1030
340 to 400
Tensile Strength: Ultimate (UTS), MPa 980 to 1730
540 to 670
Tensile Strength: Yield (Proof), MPa 660 to 1580
350 to 560

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 810
410
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
40
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.3
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.4
1.5
Embodied Energy, MJ/kg 46
20
Embodied Water, L/kg 140
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 190
77 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 1090 to 5490
320 to 840
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 35 to 61
19 to 24
Strength to Weight: Bending, points 28 to 41
19 to 22
Thermal Diffusivity, mm2/s 4.3
11
Thermal Shock Resistance, points 33 to 58
17 to 21

Alloy Composition

Aluminum (Al), % 0.9 to 1.4
0
Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0 to 0.050
0.43 to 0.48
Chromium (Cr), % 12.3 to 13.2
0.35 to 0.55
Iron (Fe), % 73.6 to 77.3
97 to 98
Manganese (Mn), % 0 to 0.2
0.75 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
0.080 to 0.15
Nickel (Ni), % 7.5 to 8.5
0.2 to 0.4
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.010
0 to 0.035
Silicon (Si), % 0 to 0.1
0.15 to 0.35
Sulfur (S), % 0 to 0.0080
0 to 0.040