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EN 1.4646 Stainless Steel vs. SAE-AISI 4320 Steel

Both EN 1.4646 stainless steel and SAE-AISI 4320 steel are iron alloys. They have 67% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4646 stainless steel and the bottom bar is SAE-AISI 4320 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
160 to 240
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
21 to 29
Fatigue Strength, MPa 340
320
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 500
370 to 500
Tensile Strength: Ultimate (UTS), MPa 750
570 to 790
Tensile Strength: Yield (Proof), MPa 430
430 to 460

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 910
420
Melting Completion (Liquidus), °C 1390
1460
Melting Onset (Solidus), °C 1340
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 13
3.4
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.8
1.7
Embodied Energy, MJ/kg 41
22
Embodied Water, L/kg 160
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 460
480 to 560
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
20 to 28
Strength to Weight: Bending, points 24
19 to 24
Thermal Shock Resistance, points 16
19 to 27

Alloy Composition

Carbon (C), % 0.020 to 0.1
0.17 to 0.22
Chromium (Cr), % 17 to 19
0.4 to 0.6
Copper (Cu), % 1.5 to 3.0
0
Iron (Fe), % 59 to 67.3
95.8 to 97
Manganese (Mn), % 10.5 to 12.5
0.45 to 0.65
Molybdenum (Mo), % 0 to 0.5
0.2 to 0.3
Nickel (Ni), % 3.5 to 4.5
1.7 to 2.0
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.050
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