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EN 1.4031 Stainless Steel vs. EN 1.7380 Steel

Both EN 1.4031 stainless steel and EN 1.7380 steel are iron alloys. They have 88% 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 1.4031 stainless steel and the bottom bar is EN 1.7380 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 13
19 to 20
Fatigue Strength, MPa 220 to 400
200 to 230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
74
Shear Strength, MPa 400 to 540
330 to 350
Tensile Strength: Ultimate (UTS), MPa 670 to 900
540 to 550
Tensile Strength: Yield (Proof), MPa 390 to 730
290 to 330

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 770
460
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 30
39
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
3.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 1.9
1.8
Embodied Energy, MJ/kg 27
23
Embodied Water, L/kg 100
59

Common Calculations

PREN (Pitting Resistance) 14
5.6
Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 94
87 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
230 to 280
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 32
19 to 20
Strength to Weight: Bending, points 22 to 27
19
Thermal Diffusivity, mm2/s 8.1
11
Thermal Shock Resistance, points 23 to 32
15 to 16

Alloy Composition

Carbon (C), % 0.36 to 0.42
0.080 to 0.14
Chromium (Cr), % 12.5 to 14.5
2.0 to 2.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 83 to 87.1
94.6 to 96.6
Manganese (Mn), % 0 to 1.0
0.4 to 0.8
Molybdenum (Mo), % 0
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

Comparable Variants