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EN 1.4872 Stainless Steel vs. SAE-AISI 4145 Steel

Both EN 1.4872 stainless steel and SAE-AISI 4145 steel are iron alloys. They have 60% 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 EN 1.4872 stainless steel and the bottom bar is SAE-AISI 4145 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
310
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 28
16
Fatigue Strength, MPa 410
240
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Shear Strength, MPa 620
360
Tensile Strength: Ultimate (UTS), MPa 950
580
Tensile Strength: Yield (Proof), MPa 560
360

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1150
420
Melting Completion (Liquidus), °C 1390
1460
Melting Onset (Solidus), °C 1340
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
42
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 17
2.4
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 3.3
1.5
Embodied Energy, MJ/kg 47
20
Embodied Water, L/kg 180
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
80
Resilience: Unit (Modulus of Resilience), kJ/m3 780
350
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 35
21
Strength to Weight: Bending, points 28
20
Thermal Diffusivity, mm2/s 3.9
11
Thermal Shock Resistance, points 21
17

Alloy Composition

Carbon (C), % 0.2 to 0.3
0.43 to 0.48
Chromium (Cr), % 24 to 26
0.8 to 1.1
Iron (Fe), % 54.2 to 61.6
96.7 to 97.7
Manganese (Mn), % 8.0 to 10
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 6.0 to 8.0
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.040