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EN 1.4031 Stainless Steel vs. EN 1.4859 Stainless Steel

Both EN 1.4031 stainless steel and EN 1.4859 stainless steel are iron alloys. They have 59% 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 1.4859 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 13
23
Fatigue Strength, MPa 220 to 400
140
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 670 to 900
490
Tensile Strength: Yield (Proof), MPa 390 to 730
210

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
560
Maximum Temperature: Mechanical, °C 770
1050
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 30
13
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
36
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 1.9
6.2
Embodied Energy, MJ/kg 27
88
Embodied Water, L/kg 100
190

Common Calculations

PREN (Pitting Resistance) 14
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 94
91
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 32
17
Strength to Weight: Bending, points 22 to 27
17
Thermal Diffusivity, mm2/s 8.1
3.4
Thermal Shock Resistance, points 23 to 32
11

Alloy Composition

Carbon (C), % 0.36 to 0.42
0.050 to 0.15
Chromium (Cr), % 12.5 to 14.5
19 to 21
Iron (Fe), % 83 to 87.1
40.3 to 49
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
31 to 33
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0.5 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.030