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EN 1.4028 Stainless Steel vs. EN 1.6958 Steel

Both EN 1.4028 stainless steel and EN 1.6958 steel are iron alloys. They have 88% of their average alloy composition in common. There are 31 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 1.4028 stainless steel and the bottom bar is EN 1.6958 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 17
16
Fatigue Strength, MPa 230 to 400
700
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 410 to 550
700
Tensile Strength: Ultimate (UTS), MPa 660 to 930
1140
Tensile Strength: Yield (Proof), MPa 390 to 730
1070

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 760
450
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
47
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
5.0
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 1.9
2.0
Embodied Energy, MJ/kg 27
27
Embodied Water, L/kg 100
60

Common Calculations

PREN (Pitting Resistance) 13
2.9
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 96
180
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
3050
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 33
40
Strength to Weight: Bending, points 22 to 27
31
Thermal Diffusivity, mm2/s 8.1
13
Thermal Shock Resistance, points 23 to 32
39

Alloy Composition

Aluminum (Al), % 0
0.0050 to 0.050
Carbon (C), % 0.26 to 0.35
0.25 to 0.3
Chromium (Cr), % 12 to 14
1.2 to 1.7
Iron (Fe), % 83.1 to 87.7
92.6 to 94.5
Manganese (Mn), % 0 to 1.5
0.2 to 0.5
Molybdenum (Mo), % 0
0.35 to 0.55
Nickel (Ni), % 0
3.3 to 3.8
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0.15 to 0.3
Sulfur (S), % 0 to 0.015
0 to 0.015
Vanadium (V), % 0
0 to 0.12