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SAE-AISI 4720 Steel vs. EN 1.4832 Stainless Steel

Both SAE-AISI 4720 steel and EN 1.4832 stainless steel are iron alloys. They have 66% 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 4720 steel and the bottom bar is EN 1.4832 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
150
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
11
Fatigue Strength, MPa 260
140
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 490
510
Tensile Strength: Yield (Proof), MPa 350
260

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 410
950
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
14
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
19
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
3.6
Embodied Energy, MJ/kg 21
51
Embodied Water, L/kg 50
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
48
Resilience: Unit (Modulus of Resilience), kJ/m3 330
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
18
Strength to Weight: Bending, points 18
18
Thermal Diffusivity, mm2/s 10
3.7
Thermal Shock Resistance, points 14
12

Alloy Composition

Carbon (C), % 0.17 to 0.22
0.15 to 0.35
Chromium (Cr), % 0.35 to 0.55
19 to 21
Iron (Fe), % 96.7 to 97.8
58.6 to 67.4
Manganese (Mn), % 0.5 to 0.7
0 to 2.0
Molybdenum (Mo), % 0.15 to 0.25
0 to 0.5
Nickel (Ni), % 0.9 to 1.2
13 to 15
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0.5 to 2.5
Sulfur (S), % 0 to 0.040
0 to 0.030