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EN 1.4872 Stainless Steel vs. EN 1.4434 Stainless Steel

Both EN 1.4872 stainless steel and EN 1.4434 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 85% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4872 stainless steel and the bottom bar is EN 1.4434 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
41
Fatigue Strength, MPa 410
270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
79
Shear Strength, MPa 620
450
Tensile Strength: Ultimate (UTS), MPa 950
660
Tensile Strength: Yield (Proof), MPa 560
310

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 440
420
Maximum Temperature: Mechanical, °C 1150
980
Melting Completion (Liquidus), °C 1390
1450
Melting Onset (Solidus), °C 1340
1400
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 17
21
Density, g/cm3 7.6
7.9
Embodied Carbon, kg CO2/kg material 3.3
4.2
Embodied Energy, MJ/kg 47
57
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 30
32
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
220
Resilience: Unit (Modulus of Resilience), kJ/m3 780
240
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 35
23
Strength to Weight: Bending, points 28
21
Thermal Diffusivity, mm2/s 3.9
4.0
Thermal Shock Resistance, points 21
15

Alloy Composition

Carbon (C), % 0.2 to 0.3
0 to 0.030
Chromium (Cr), % 24 to 26
16.5 to 19.5
Iron (Fe), % 54.2 to 61.6
59.2 to 69.9
Manganese (Mn), % 8.0 to 10
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 6.0 to 8.0
10.5 to 14
Nitrogen (N), % 0.2 to 0.4
0.1 to 0.2
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015