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EN 1.4031 Stainless Steel vs. EN 1.4487 Stainless Steel

Both EN 1.4031 stainless steel and EN 1.4487 stainless steel are iron alloys. They have 83% 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 EN 1.4031 stainless steel and the bottom bar is EN 1.4487 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 13
34
Fatigue Strength, MPa 220 to 400
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 670 to 900
560
Tensile Strength: Yield (Proof), MPa 390 to 730
260

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 770
960
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 30
16
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
16
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.9
3.1
Embodied Energy, MJ/kg 27
44
Embodied Water, L/kg 100
150

Common Calculations

PREN (Pitting Resistance) 14
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 94
160
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 32
20
Strength to Weight: Bending, points 22 to 27
19
Thermal Diffusivity, mm2/s 8.1
4.2
Thermal Shock Resistance, points 23 to 32
16

Alloy Composition

Carbon (C), % 0.36 to 0.42
0 to 0.030
Chromium (Cr), % 12.5 to 14.5
18 to 20
Iron (Fe), % 83 to 87.1
64.7 to 72.9
Manganese (Mn), % 0 to 1.0
0 to 1.5
Nickel (Ni), % 0
9.0 to 12
Nitrogen (N), % 0
0.12 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.030