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SAE-AISI 1340 Steel vs. EN 1.4724 Stainless Steel

Both SAE-AISI 1340 steel and EN 1.4724 stainless 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 (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1340 steel and the bottom bar is EN 1.4724 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 210
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 23
16
Fatigue Strength, MPa 220 to 390
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
75
Shear Strength, MPa 340 to 440
340
Tensile Strength: Ultimate (UTS), MPa 540 to 730
550
Tensile Strength: Yield (Proof), MPa 300 to 620
280

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
850
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 51
21
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.0
Embodied Energy, MJ/kg 19
28
Embodied Water, L/kg 48
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78 to 110
73
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 1040
210
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19 to 26
20
Strength to Weight: Bending, points 19 to 23
19
Thermal Diffusivity, mm2/s 14
5.6
Thermal Shock Resistance, points 17 to 23
19

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.2
Carbon (C), % 0.38 to 0.43
0 to 0.12
Chromium (Cr), % 0
12 to 14
Iron (Fe), % 97.2 to 97.9
82.2 to 86.6
Manganese (Mn), % 1.6 to 1.9
0 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0.7 to 1.4
Sulfur (S), % 0 to 0.040
0 to 0.015