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EN 1.4411 Stainless Steel vs. EN 1.4634 Stainless Steel

Both EN 1.4411 stainless steel and EN 1.4634 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 31 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 1.4411 stainless steel and the bottom bar is EN 1.4634 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
21
Fatigue Strength, MPa 370
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 870
540
Tensile Strength: Yield (Proof), MPa 600
280

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
500
Maximum Temperature: Mechanical, °C 880
900
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 17
21
Thermal Expansion, µm/m-K 11
10

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 13
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.0
2.9
Embodied Energy, MJ/kg 41
42
Embodied Water, L/kg 130
140

Common Calculations

PREN (Pitting Resistance) 22
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
93
Resilience: Unit (Modulus of Resilience), kJ/m3 920
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31
20
Strength to Weight: Bending, points 26
19
Thermal Diffusivity, mm2/s 4.6
5.8
Thermal Shock Resistance, points 28
19

Alloy Composition

Aluminum (Al), % 0
0.2 to 1.5
Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 15 to 17
17.5 to 18.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 73.1 to 79.5
74.9 to 81.8
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 1.5 to 2.0
0 to 0.5
Nickel (Ni), % 4.0 to 6.0
0 to 0.5
Niobium (Nb), % 0
0.3 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.050
Silicon (Si), % 0 to 0.8
0.2 to 1.5
Sulfur (S), % 0 to 0.025
0 to 0.050