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EN 1.4411 Stainless Steel vs. EN 1.4508 Stainless Steel

Both EN 1.4411 stainless steel and EN 1.4508 stainless steel are iron alloys. They have 89% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4411 stainless steel and the bottom bar is EN 1.4508 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
34
Fatigue Strength, MPa 370
210
Impact Strength: V-Notched Charpy, J 68
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
79
Tensile Strength: Ultimate (UTS), MPa 870
570
Tensile Strength: Yield (Proof), MPa 600
260

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 880
1000
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
20
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.0
4.0
Embodied Energy, MJ/kg 41
55
Embodied Water, L/kg 130
160

Common Calculations

PREN (Pitting Resistance) 22
32
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
160
Resilience: Unit (Modulus of Resilience), kJ/m3 920
170
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
4.1
Thermal Shock Resistance, points 28
17

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 15 to 17
18 to 20
Iron (Fe), % 73.1 to 79.5
61.2 to 69.9
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 1.5 to 2.0
3.0 to 3.5
Nickel (Ni), % 4.0 to 6.0
9.0 to 12
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.5
Sulfur (S), % 0 to 0.025
0 to 0.030