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EN 1.4911 Stainless Steel vs. EN 1.4557 Stainless Steel

Both EN 1.4911 stainless steel and EN 1.4557 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 31 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 1.4911 stainless steel and the bottom bar is EN 1.4557 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
40
Fatigue Strength, MPa 530
260
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 1070
560
Tensile Strength: Yield (Proof), MPa 970
300

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 430
420
Maximum Temperature: Mechanical, °C 700
1090
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 20
15
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 20
29
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 3.4
5.6
Embodied Energy, MJ/kg 49
76
Embodied Water, L/kg 130
190

Common Calculations

PREN (Pitting Resistance) 14
45
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
190
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 38
19
Strength to Weight: Bending, points 30
19
Thermal Diffusivity, mm2/s 5.4
4.0
Thermal Shock Resistance, points 37
12

Alloy Composition

Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0 to 0.020
Chromium (Cr), % 9.8 to 11.2
19.5 to 20.5
Cobalt (Co), % 5.0 to 7.0
0
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 75.7 to 83.8
49.5 to 56.3
Manganese (Mn), % 0.3 to 1.3
0 to 1.2
Molybdenum (Mo), % 0.5 to 1.0
6.0 to 7.0
Nickel (Ni), % 0.2 to 1.2
17.5 to 19.5
Niobium (Nb), % 0.2 to 0.5
0
Nitrogen (N), % 0 to 0.035
0.18 to 0.24
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0.1 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0