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EN 1.4477 Stainless Steel vs. AISI 431 Stainless Steel

Both EN 1.4477 stainless steel and AISI 431 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 33 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 1.4477 stainless steel and the bottom bar is AISI 431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
250
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 22 to 23
15 to 17
Fatigue Strength, MPa 420 to 490
430 to 610
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 550 to 580
550 to 840
Tensile Strength: Ultimate (UTS), MPa 880 to 930
890 to 1380
Tensile Strength: Yield (Proof), MPa 620 to 730
710 to 1040

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 460
400
Maximum Temperature: Mechanical, °C 1100
850
Melting Completion (Liquidus), °C 1430
1510
Melting Onset (Solidus), °C 1380
1450
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 13
26
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 20
9.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.7
2.2
Embodied Energy, MJ/kg 52
31
Embodied Water, L/kg 190
120

Common Calculations

PREN (Pitting Resistance) 41
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180 to 190
140 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 940 to 1290
1270 to 2770
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 33
32 to 50
Strength to Weight: Bending, points 26 to 27
27 to 36
Thermal Diffusivity, mm2/s 3.5
7.0
Thermal Shock Resistance, points 23 to 25
28 to 43

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.2
Chromium (Cr), % 28 to 30
15 to 17
Copper (Cu), % 0 to 0.8
0
Iron (Fe), % 56.6 to 63.6
78.2 to 83.8
Manganese (Mn), % 0.8 to 1.5
0 to 1.0
Molybdenum (Mo), % 1.5 to 2.6
0
Nickel (Ni), % 5.8 to 7.5
1.3 to 2.5
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030