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EN 1.4002 Stainless Steel vs. EN 1.4931 Steel

Both EN 1.4002 stainless steel and EN 1.4931 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4002 stainless steel and the bottom bar is EN 1.4931 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19
17
Fatigue Strength, MPa 160
410
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 500
810
Tensile Strength: Yield (Proof), MPa 260
620

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Mechanical, °C 760
600
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
24
Thermal Expansion, µm/m-K 10
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
9.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
11

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
8.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.9
2.9
Embodied Energy, MJ/kg 27
42
Embodied Water, L/kg 100
100

Common Calculations

PREN (Pitting Resistance) 13
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
130
Resilience: Unit (Modulus of Resilience), kJ/m3 170
970
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
29
Strength to Weight: Bending, points 18
25
Thermal Diffusivity, mm2/s 8.1
6.5
Thermal Shock Resistance, points 18
22

Alloy Composition

Aluminum (Al), % 0.1 to 0.3
0
Carbon (C), % 0 to 0.080
0.2 to 0.26
Chromium (Cr), % 12 to 14
11.3 to 12.2
Iron (Fe), % 83.6 to 87.9
83.2 to 86.8
Manganese (Mn), % 0 to 1.0
0.5 to 0.8
Molybdenum (Mo), % 0
1.0 to 1.2
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.020
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0
0.25 to 0.35