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S39274 Stainless Steel vs. SAE-AISI 4620 Steel

Both S39274 stainless steel and SAE-AISI 4620 steel are iron alloys. They have 64% 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 S39274 stainless steel and the bottom bar is SAE-AISI 4620 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
150 to 210
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 17
16 to 27
Fatigue Strength, MPa 380
260 to 360
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 560
320 to 420
Tensile Strength: Ultimate (UTS), MPa 900
490 to 680
Tensile Strength: Yield (Proof), MPa 620
350 to 550

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
410
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 24
3.2
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.3
1.6
Embodied Energy, MJ/kg 60
22
Embodied Water, L/kg 180
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
100 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 940
330 to 800
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32
17 to 24
Strength to Weight: Bending, points 26
18 to 22
Thermal Diffusivity, mm2/s 4.2
13
Thermal Shock Resistance, points 25
15 to 20

Alloy Composition

Carbon (C), % 0 to 0.030
0.17 to 0.22
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 0.2 to 0.8
0
Iron (Fe), % 57 to 65.6
96.4 to 97.4
Manganese (Mn), % 0 to 1.0
0.45 to 0.65
Molybdenum (Mo), % 2.5 to 3.5
0.2 to 0.3
Nickel (Ni), % 6.0 to 8.0
1.7 to 2.0
Nitrogen (N), % 0.24 to 0.32
0
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.8
0.15 to 0.35
Sulfur (S), % 0 to 0.020
0 to 0.040
Tungsten (W), % 1.5 to 2.5
0