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EN 1.4911 Stainless Steel vs. AISI 431 Stainless Steel

Both EN 1.4911 stainless steel and AISI 431 stainless steel are iron alloys. They have a moderately high 92% 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 1.4911 stainless steel and the bottom bar is AISI 431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
15 to 17
Fatigue Strength, MPa 530
430 to 610
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 640
550 to 840
Tensile Strength: Ultimate (UTS), MPa 1070
890 to 1380
Tensile Strength: Yield (Proof), MPa 970
710 to 1040

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 430
400
Maximum Temperature: Mechanical, °C 700
850
Melting Completion (Liquidus), °C 1450
1510
Melting Onset (Solidus), °C 1410
1450
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 20
26
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 20
9.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 3.4
2.2
Embodied Energy, MJ/kg 49
31
Embodied Water, L/kg 130
120

Common Calculations

PREN (Pitting Resistance) 14
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
140 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
1270 to 2770
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
32 to 50
Strength to Weight: Bending, points 30
27 to 36
Thermal Diffusivity, mm2/s 5.4
7.0
Thermal Shock Resistance, points 37
28 to 43

Alloy Composition

Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0 to 0.2
Chromium (Cr), % 9.8 to 11.2
15 to 17
Cobalt (Co), % 5.0 to 7.0
0
Iron (Fe), % 75.7 to 83.8
78.2 to 83.8
Manganese (Mn), % 0.3 to 1.3
0 to 1.0
Molybdenum (Mo), % 0.5 to 1.0
0
Nickel (Ni), % 0.2 to 1.2
1.3 to 2.5
Niobium (Nb), % 0.2 to 0.5
0
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.1 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0