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EN 1.4000 Stainless Steel vs. SAE-AISI 1340 Steel

Both EN 1.4000 stainless steel and SAE-AISI 1340 steel are iron alloys. They have 87% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4000 stainless steel and the bottom bar is SAE-AISI 1340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
160 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
11 to 23
Fatigue Strength, MPa 170
220 to 390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
72
Shear Strength, MPa 320
340 to 440
Tensile Strength: Ultimate (UTS), MPa 500
540 to 730
Tensile Strength: Yield (Proof), MPa 260
300 to 620

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 760
400
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 30
51
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
1.9
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.9
1.4
Embodied Energy, MJ/kg 27
19
Embodied Water, L/kg 100
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 91
78 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 180
240 to 1040
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
19 to 26
Strength to Weight: Bending, points 18
19 to 23
Thermal Diffusivity, mm2/s 8.1
14
Thermal Shock Resistance, points 18
17 to 23

Alloy Composition

Carbon (C), % 0 to 0.080
0.38 to 0.43
Chromium (Cr), % 12 to 14
0
Iron (Fe), % 83.9 to 88
97.2 to 97.9
Manganese (Mn), % 0 to 1.0
1.6 to 1.9
Phosphorus (P), % 0 to 0.040
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