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SAE-AISI 1055 Steel vs. EN 1.4002 Stainless Steel

Both SAE-AISI 1055 steel and EN 1.4002 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 30 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 SAE-AISI 1055 steel and the bottom bar is EN 1.4002 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 14
19
Fatigue Strength, MPa 260 to 390
160
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Shear Strength, MPa 440 to 450
310
Tensile Strength: Ultimate (UTS), MPa 730 to 750
500
Tensile Strength: Yield (Proof), MPa 400 to 630
260

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
760
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
30
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 12
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
1.9
Embodied Energy, MJ/kg 18
27
Embodied Water, L/kg 46
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80 to 85
80
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 1070
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
18
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 14
8.1
Thermal Shock Resistance, points 23 to 24
18

Alloy Composition

Aluminum (Al), % 0
0.1 to 0.3
Carbon (C), % 0.5 to 0.6
0 to 0.080
Chromium (Cr), % 0
12 to 14
Iron (Fe), % 98.4 to 98.9
83.6 to 87.9
Manganese (Mn), % 0.6 to 0.9
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.015