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AISI 440A Stainless Steel vs. EN 1.7380 Steel

Both AISI 440A stainless steel and EN 1.7380 steel are iron alloys. They have 84% 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 AISI 440A stainless steel and the bottom bar is EN 1.7380 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 5.0 to 20
19 to 20
Fatigue Strength, MPa 270 to 790
200 to 230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Shear Strength, MPa 450 to 1040
330 to 350
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
540 to 550
Tensile Strength: Yield (Proof), MPa 420 to 1650
290 to 330

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 760
460
Melting Completion (Liquidus), °C 1480
1470
Melting Onset (Solidus), °C 1370
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
39
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
3.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.2
1.8
Embodied Energy, MJ/kg 31
23
Embodied Water, L/kg 120
59

Common Calculations

PREN (Pitting Resistance) 18
5.6
Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
87 to 98
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 65
19 to 20
Strength to Weight: Bending, points 23 to 43
19
Thermal Diffusivity, mm2/s 6.2
11
Thermal Shock Resistance, points 26 to 65
15 to 16

Alloy Composition

Carbon (C), % 0.6 to 0.75
0.080 to 0.14
Chromium (Cr), % 16 to 18
2.0 to 2.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 78.4 to 83.4
94.6 to 96.6
Manganese (Mn), % 0 to 1.0
0.4 to 0.8
Molybdenum (Mo), % 0 to 0.75
0.9 to 1.1
Nitrogen (N), % 0
0 to 0.012
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010