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EN 1.4031 Stainless Steel vs. EN 1.8527 Steel

Both EN 1.4031 stainless steel and EN 1.8527 steel are iron alloys. They have 90% 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 1.8527 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 13
16
Fatigue Strength, MPa 220 to 400
520
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
74
Shear Strength, MPa 400 to 540
550
Tensile Strength: Ultimate (UTS), MPa 670 to 900
900
Tensile Strength: Yield (Proof), MPa 390 to 730
800

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 770
490
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 30
41
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
4.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.9
1.7
Embodied Energy, MJ/kg 27
23
Embodied Water, L/kg 100
66

Common Calculations

PREN (Pitting Resistance) 14
5.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 94
140
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
1670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 32
32
Strength to Weight: Bending, points 22 to 27
26
Thermal Diffusivity, mm2/s 8.1
11
Thermal Shock Resistance, points 23 to 32
26

Alloy Composition

Carbon (C), % 0.36 to 0.42
0.040 to 0.12
Chromium (Cr), % 12.5 to 14.5
3.7 to 4.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 83 to 87.1
93.2 to 95.1
Manganese (Mn), % 0 to 1.0
0.85 to 1.2
Molybdenum (Mo), % 0
0.4 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.035