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EN 1.4557 Stainless Steel vs. EN 1.6958 Steel

Both EN 1.4557 stainless steel and EN 1.6958 steel are iron alloys. They have 59% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4557 stainless steel and the bottom bar is EN 1.6958 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
340
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
16
Fatigue Strength, MPa 260
700
Impact Strength: V-Notched Charpy, J 56
63
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 560
1140
Tensile Strength: Yield (Proof), MPa 300
1070

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1090
450
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 15
47
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 29
5.0
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.6
2.0
Embodied Energy, MJ/kg 76
27
Embodied Water, L/kg 190
60

Common Calculations

PREN (Pitting Resistance) 45
2.9
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
180
Resilience: Unit (Modulus of Resilience), kJ/m3 210
3050
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
40
Strength to Weight: Bending, points 19
31
Thermal Diffusivity, mm2/s 4.0
13
Thermal Shock Resistance, points 12
39

Alloy Composition

Aluminum (Al), % 0
0.0050 to 0.050
Carbon (C), % 0 to 0.020
0.25 to 0.3
Chromium (Cr), % 19.5 to 20.5
1.2 to 1.7
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 49.5 to 56.3
92.6 to 94.5
Manganese (Mn), % 0 to 1.2
0.2 to 0.5
Molybdenum (Mo), % 6.0 to 7.0
0.35 to 0.55
Nickel (Ni), % 17.5 to 19.5
3.3 to 3.8
Nitrogen (N), % 0.18 to 0.24
0
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 1.0
0.15 to 0.3
Sulfur (S), % 0 to 0.010
0 to 0.015
Vanadium (V), % 0
0 to 0.12