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AISI 440A Stainless Steel vs. EN 1.4874 Stainless Steel

Both AISI 440A stainless steel and EN 1.4874 stainless steel are iron alloys. They have 50% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 440A stainless steel and the bottom bar is EN 1.4874 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 5.0 to 20
6.7
Fatigue Strength, MPa 270 to 790
180
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
480
Tensile Strength: Yield (Proof), MPa 420 to 1650
360

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 400
560
Maximum Temperature: Mechanical, °C 760
1150
Melting Completion (Liquidus), °C 1480
1450
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 23
13
Thermal Expansion, µm/m-K 10
15

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
70
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 2.2
7.6
Embodied Energy, MJ/kg 31
110
Embodied Water, L/kg 120
290

Common Calculations

PREN (Pitting Resistance) 18
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
29
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 65
16
Strength to Weight: Bending, points 23 to 43
16
Thermal Diffusivity, mm2/s 6.2
3.3
Thermal Shock Resistance, points 26 to 65
11

Alloy Composition

Carbon (C), % 0.6 to 0.75
0.35 to 0.65
Chromium (Cr), % 16 to 18
19 to 22
Cobalt (Co), % 0
18.5 to 22
Iron (Fe), % 78.4 to 83.4
23 to 38.9
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.75
2.5 to 3.0
Nickel (Ni), % 0
18 to 22
Niobium (Nb), % 0
0.75 to 1.3
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0
2.0 to 3.0