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EN 1.4849 Stainless Steel vs. SAE-AISI 81B45 Steel

Both EN 1.4849 stainless steel and SAE-AISI 81B45 steel are iron alloys. They have 40% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4849 stainless steel and the bottom bar is SAE-AISI 81B45 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
160 to 200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 4.5
12 to 24
Fatigue Strength, MPa 120
250 to 350
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 480
540 to 670
Tensile Strength: Yield (Proof), MPa 250
350 to 560

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 1020
410
Melting Completion (Liquidus), °C 1390
1460
Melting Onset (Solidus), °C 1340
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
40
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Base Metal Price, % relative 42
2.3
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 7.1
1.5
Embodied Energy, MJ/kg 100
20
Embodied Water, L/kg 200
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18
77 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 160
320 to 840
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
19 to 24
Strength to Weight: Bending, points 17
19 to 22
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 11
17 to 21

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0.3 to 0.5
0.43 to 0.48
Chromium (Cr), % 18 to 21
0.35 to 0.55
Iron (Fe), % 32.6 to 43.5
97 to 98
Manganese (Mn), % 0 to 2.0
0.75 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.080 to 0.15
Nickel (Ni), % 36 to 39
0.2 to 0.4
Niobium (Nb), % 1.2 to 1.8
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 1.0 to 2.5
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040