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EN 1.4477 Stainless Steel vs. AISI 440A Stainless Steel

Both EN 1.4477 stainless steel and AISI 440A stainless steel are iron alloys. They have 78% 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 1.4477 stainless steel and the bottom bar is AISI 440A stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 22 to 23
5.0 to 20
Fatigue Strength, MPa 420 to 490
270 to 790
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 550 to 580
450 to 1040
Tensile Strength: Ultimate (UTS), MPa 880 to 930
730 to 1790
Tensile Strength: Yield (Proof), MPa 620 to 730
420 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 460
400
Maximum Temperature: Mechanical, °C 1100
760
Melting Completion (Liquidus), °C 1430
1480
Melting Onset (Solidus), °C 1380
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 13
23
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.9

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
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180 to 190
87 to 120
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 33
26 to 65
Strength to Weight: Bending, points 26 to 27
23 to 43
Thermal Diffusivity, mm2/s 3.5
6.2
Thermal Shock Resistance, points 23 to 25
26 to 65

Alloy Composition

Carbon (C), % 0 to 0.030
0.6 to 0.75
Chromium (Cr), % 28 to 30
16 to 18
Copper (Cu), % 0 to 0.8
0
Iron (Fe), % 56.6 to 63.6
78.4 to 83.4
Manganese (Mn), % 0.8 to 1.5
0 to 1.0
Molybdenum (Mo), % 1.5 to 2.6
0 to 0.75
Nickel (Ni), % 5.8 to 7.5
0
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 0.015