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EN 1.4371 Stainless Steel vs. EN 1.4031 Stainless Steel

Both EN 1.4371 stainless steel and EN 1.4031 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 32 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 1.4371 stainless steel and the bottom bar is EN 1.4031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45 to 51
11 to 13
Fatigue Strength, MPa 290 to 340
220 to 400
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 520 to 540
400 to 540
Tensile Strength: Ultimate (UTS), MPa 740 to 750
670 to 900
Tensile Strength: Yield (Proof), MPa 320 to 340
390 to 730

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 880
770
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
30
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
7.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.6
1.9
Embodied Energy, MJ/kg 38
27
Embodied Water, L/kg 140
100

Common Calculations

PREN (Pitting Resistance) 20
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 310
77 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 300
380 to 1360
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
24 to 32
Strength to Weight: Bending, points 24
22 to 27
Thermal Diffusivity, mm2/s 4.0
8.1
Thermal Shock Resistance, points 16
23 to 32

Alloy Composition

Carbon (C), % 0 to 0.030
0.36 to 0.42
Chromium (Cr), % 16 to 17.5
12.5 to 14.5
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 66.7 to 74.4
83 to 87.1
Manganese (Mn), % 6.0 to 8.0
0 to 1.0
Nickel (Ni), % 3.5 to 5.5
0
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015