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EN 1.3956 Stainless Steel vs. SAE-AISI 4620 Steel

Both EN 1.3956 stainless steel and SAE-AISI 4620 steel are iron alloys. They have 60% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.3956 stainless steel and the bottom bar is SAE-AISI 4620 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 27
16 to 27
Fatigue Strength, MPa 240
260 to 360
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 650
490 to 680
Tensile Strength: Yield (Proof), MPa 330
350 to 550

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1080
410
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 22
3.2
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.8
1.6
Embodied Energy, MJ/kg 68
22
Embodied Water, L/kg 180
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
100 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 270
330 to 800
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 23
17 to 24
Strength to Weight: Bending, points 21
18 to 22
Thermal Shock Resistance, points 18
15 to 20

Alloy Composition

Carbon (C), % 0 to 0.060
0.17 to 0.22
Chromium (Cr), % 20.5 to 23.5
0
Iron (Fe), % 51.9 to 62.1
96.4 to 97.4
Manganese (Mn), % 4.0 to 6.0
0.45 to 0.65
Molybdenum (Mo), % 1.5 to 3.0
0.2 to 0.3
Nickel (Ni), % 11.5 to 13.5
1.7 to 2.0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0.1 to 0.3
0