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EN 1.4029 Stainless Steel vs. EN 1.8958 Steel

Both EN 1.4029 stainless steel and EN 1.8958 steel are iron alloys. They have 87% 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 1.4029 stainless steel and the bottom bar is EN 1.8958 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 10 to 20
19
Fatigue Strength, MPa 270 to 400
150
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 440 to 550
270
Tensile Strength: Ultimate (UTS), MPa 700 to 930
430
Tensile Strength: Yield (Proof), MPa 410 to 740
220

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 750
410
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
46
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
2.4
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
1.5
Embodied Energy, MJ/kg 28
19
Embodied Water, L/kg 100
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 120
70
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 1410
130
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 33
15
Strength to Weight: Bending, points 23 to 27
16
Thermal Diffusivity, mm2/s 8.1
12
Thermal Shock Resistance, points 26 to 34
13

Alloy Composition

Carbon (C), % 0.25 to 0.32
0 to 0.16
Chromium (Cr), % 12 to 13.5
0.35 to 0.85
Copper (Cu), % 0
0.2 to 0.6
Iron (Fe), % 82.8 to 87.6
96.5 to 99.3
Manganese (Mn), % 0 to 1.5
0.15 to 0.7
Molybdenum (Mo), % 0 to 0.6
0
Nickel (Ni), % 0
0 to 0.7
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.45
Sulfur (S), % 0.15 to 0.25
0 to 0.040