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EN 1.4931 Steel vs. EN 1.6982 Stainless Steel

Both EN 1.4931 steel and EN 1.6982 stainless steel are iron alloys. Both are furnished in the quenched and tempered condition. They have a moderately high 95% 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 1.4931 steel and the bottom bar is EN 1.6982 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
17
Fatigue Strength, MPa 410
350
Impact Strength: V-Notched Charpy, J 30
56
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 810
800
Tensile Strength: Yield (Proof), MPa 620
570

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Mechanical, °C 600
770
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 24
25
Thermal Expansion, µm/m-K 14
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.8
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 11
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.9
2.4
Embodied Energy, MJ/kg 42
33
Embodied Water, L/kg 100
110

Common Calculations

PREN (Pitting Resistance) 16
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 970
820
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
28
Strength to Weight: Bending, points 25
25
Thermal Diffusivity, mm2/s 6.5
6.6
Thermal Shock Resistance, points 22
29

Alloy Composition

Carbon (C), % 0.2 to 0.26
0 to 0.050
Chromium (Cr), % 11.3 to 12.2
12 to 13.5
Iron (Fe), % 83.2 to 86.8
78.7 to 84.5
Manganese (Mn), % 0.5 to 0.8
0 to 1.0
Molybdenum (Mo), % 1.0 to 1.2
0 to 0.7
Nickel (Ni), % 0 to 1.0
3.5 to 5.0
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.015
Tungsten (W), % 0 to 0.5
0
Vanadium (V), % 0.25 to 0.35
0