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EN 1.8958 Steel vs. EN 1.4374 Stainless Steel

Both EN 1.8958 steel and EN 1.4374 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 32 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 1.8958 steel and the bottom bar is EN 1.4374 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
230
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19
40
Fatigue Strength, MPa 150
340
Impact Strength: V-Notched Charpy, J 30
90
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 270
550
Tensile Strength: Ultimate (UTS), MPa 430
800
Tensile Strength: Yield (Proof), MPa 220
400

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 410
920
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
14
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 1.5
2.9
Embodied Energy, MJ/kg 19
42
Embodied Water, L/kg 50
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
270
Resilience: Unit (Modulus of Resilience), kJ/m3 130
400
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 15
29
Strength to Weight: Bending, points 16
25
Thermal Diffusivity, mm2/s 12
4.0
Thermal Shock Resistance, points 13
17

Alloy Composition

Carbon (C), % 0 to 0.16
0.050 to 0.1
Chromium (Cr), % 0.35 to 0.85
17.5 to 18.5
Copper (Cu), % 0.2 to 0.6
0 to 0.4
Iron (Fe), % 96.5 to 99.3
63.5 to 67.9
Manganese (Mn), % 0.15 to 0.7
9.0 to 10
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.7
5.0 to 6.0
Nitrogen (N), % 0 to 0.010
0.25 to 0.32
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 0.45
0.3 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.030