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EN 1.4404 Stainless Steel vs. EN 1.7380 Steel

Both EN 1.4404 stainless steel and EN 1.7380 steel are iron alloys. They have 71% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4404 stainless steel and the bottom bar is EN 1.7380 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
160 to 170
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14 to 43
19 to 20
Fatigue Strength, MPa 220 to 320
200 to 230
Impact Strength: V-Notched Charpy, J 91 to 93
31 to 35
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
74
Shear Strength, MPa 420 to 550
330 to 350
Tensile Strength: Ultimate (UTS), MPa 600 to 900
540 to 550
Tensile Strength: Yield (Proof), MPa 240 to 570
290 to 330

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Maximum Temperature: Mechanical, °C 950
460
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
39
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 19
3.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 3.8
1.8
Embodied Energy, MJ/kg 52
23
Embodied Water, L/kg 150
59

Common Calculations

PREN (Pitting Resistance) 26
5.6
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 210
87 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 800
230 to 280
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 32
19 to 20
Strength to Weight: Bending, points 20 to 26
19
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 13 to 20
15 to 16

Alloy Composition

Carbon (C), % 0 to 0.030
0.080 to 0.14
Chromium (Cr), % 16.5 to 18.5
2.0 to 2.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 62.8 to 71.5
94.6 to 96.6
Manganese (Mn), % 0 to 2.0
0.4 to 0.8
Molybdenum (Mo), % 2.0 to 2.5
0.9 to 1.1
Nickel (Ni), % 10 to 13
0
Nitrogen (N), % 0 to 0.1
0 to 0.012
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010

Comparable Variants