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EN 1.4640 Stainless Steel vs. SAE-AISI 1090 Steel

Both EN 1.4640 stainless steel and SAE-AISI 1090 steel are iron alloys. They have 71% 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 1.4640 stainless steel and the bottom bar is SAE-AISI 1090 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 200
220 to 280
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 51
11
Fatigue Strength, MPa 230 to 250
320 to 380
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Shear Strength, MPa 440 to 460
470 to 570
Tensile Strength: Ultimate (UTS), MPa 620 to 650
790 to 950
Tensile Strength: Yield (Proof), MPa 240 to 260
520 to 610

Thermal Properties

Latent Heat of Fusion, J/g 280
240
Maximum Temperature: Mechanical, °C 930
400
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
50
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 14
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.4
Embodied Energy, MJ/kg 40
19
Embodied Water, L/kg 150
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250 to 260
82 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 170
730 to 1000
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22 to 23
28 to 34
Strength to Weight: Bending, points 21
24 to 27
Thermal Diffusivity, mm2/s 4.0
13
Thermal Shock Resistance, points 14 to 15
25 to 31

Alloy Composition

Carbon (C), % 0.030 to 0.080
0.85 to 1.0
Chromium (Cr), % 18 to 19
0
Copper (Cu), % 1.3 to 2.0
0
Iron (Fe), % 67.4 to 73.6
98 to 98.6
Manganese (Mn), % 1.5 to 4.0
0.6 to 0.9
Nickel (Ni), % 5.5 to 6.9
0
Nitrogen (N), % 0.030 to 0.11
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.015
0 to 0.050

Comparable Variants