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EN 1.4521 Stainless Steel vs. SAE-AISI 1137 Steel

Both EN 1.4521 stainless steel and SAE-AISI 1137 steel are iron alloys. They have 78% 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 EN 1.4521 stainless steel and the bottom bar is SAE-AISI 1137 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
11 to 17
Fatigue Strength, MPa 230
250 to 400
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 330
430 to 460
Tensile Strength: Ultimate (UTS), MPa 520
700 to 760
Tensile Strength: Yield (Proof), MPa 340
370 to 650

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 930
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
51
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
10
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.9
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.4
Embodied Energy, MJ/kg 39
19
Embodied Water, L/kg 130
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
81 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 280
360 to 1130
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
25 to 27
Strength to Weight: Bending, points 19
22 to 24
Thermal Diffusivity, mm2/s 6.2
14
Thermal Shock Resistance, points 18
21 to 23

Alloy Composition

Carbon (C), % 0 to 0.025
0.32 to 0.39
Chromium (Cr), % 17 to 20
0
Iron (Fe), % 74.6 to 81.1
97.8 to 98.3
Manganese (Mn), % 0 to 1.0
1.4 to 1.7
Molybdenum (Mo), % 1.8 to 2.5
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0.080 to 0.13
Titanium (Ti), % 0.15 to 0.8
0