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EN 1.4724 Stainless Steel vs. SAE-AISI 1021 Steel

Both EN 1.4724 stainless steel and SAE-AISI 1021 steel are iron alloys. They have 85% of their average alloy composition in common. There are 31 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 EN 1.4724 stainless steel and the bottom bar is SAE-AISI 1021 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
130 to 150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
17 to 27
Fatigue Strength, MPa 170
190 to 300
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 340
310 to 320
Tensile Strength: Ultimate (UTS), MPa 550
480 to 530
Tensile Strength: Yield (Proof), MPa 280
260 to 450

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 850
400
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 21
52
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
1.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 28
18
Embodied Water, L/kg 110
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 73
84 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 210
180 to 530
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
17 to 19
Strength to Weight: Bending, points 19
17 to 18
Thermal Diffusivity, mm2/s 5.6
14
Thermal Shock Resistance, points 19
15 to 17

Alloy Composition

Aluminum (Al), % 0.7 to 1.2
0
Carbon (C), % 0 to 0.12
0.18 to 0.23
Chromium (Cr), % 12 to 14
0
Iron (Fe), % 82.2 to 86.6
98.8 to 99.22
Manganese (Mn), % 0 to 1.0
0.6 to 0.9
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0.7 to 1.4
0
Sulfur (S), % 0 to 0.015
0 to 0.050