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SAE-AISI 8645 Steel vs. EN 1.4913 Stainless Steel

Both SAE-AISI 8645 steel and EN 1.4913 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 30 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 8645 steel and the bottom bar is EN 1.4913 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 23
14 to 22
Fatigue Strength, MPa 280 to 350
320 to 480
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 380 to 400
550 to 590
Tensile Strength: Ultimate (UTS), MPa 600 to 670
870 to 980
Tensile Strength: Yield (Proof), MPa 390 to 560
480 to 850

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 410
700
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
24
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
9.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
2.9
Embodied Energy, MJ/kg 20
41
Embodied Water, L/kg 50
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 120
130 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 420 to 840
600 to 1860
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 24
31 to 35
Strength to Weight: Bending, points 20 to 22
26 to 28
Thermal Diffusivity, mm2/s 10
6.5
Thermal Shock Resistance, points 18 to 20
31 to 34

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0 to 0.0015
Carbon (C), % 0.43 to 0.48
0.17 to 0.23
Chromium (Cr), % 0.4 to 0.6
10 to 11.5
Iron (Fe), % 96.5 to 97.7
84.5 to 88.3
Manganese (Mn), % 0.75 to 1.0
0.4 to 0.9
Molybdenum (Mo), % 0.15 to 0.25
0.5 to 0.8
Nickel (Ni), % 0.4 to 0.7
0.2 to 0.6
Niobium (Nb), % 0
0.25 to 0.55
Nitrogen (N), % 0
0.050 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.015
Vanadium (V), % 0
0.1 to 0.3

Comparable Variants