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EN 1.4509 Stainless Steel vs. S32050 Stainless Steel

Both EN 1.4509 stainless steel and S32050 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 66% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4509 stainless steel and the bottom bar is S32050 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
220
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 21
46
Fatigue Strength, MPa 170
340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
81
Shear Strength, MPa 330
540
Tensile Strength: Ultimate (UTS), MPa 530
770
Tensile Strength: Yield (Proof), MPa 260
370

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 570
440
Maximum Temperature: Mechanical, °C 890
1100
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
12
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 13
31
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.8
6.0
Embodied Energy, MJ/kg 41
81
Embodied Water, L/kg 120
210

Common Calculations

PREN (Pitting Resistance) 18
48
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
290
Resilience: Unit (Modulus of Resilience), kJ/m3 180
330
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
27
Strength to Weight: Bending, points 19
23
Thermal Diffusivity, mm2/s 6.8
3.3
Thermal Shock Resistance, points 19
17

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17.5 to 18.5
22 to 24
Copper (Cu), % 0
0 to 0.4
Iron (Fe), % 77.8 to 82.1
43.1 to 51.8
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0
6.0 to 6.6
Nickel (Ni), % 0
20 to 23
Niobium (Nb), % 0.3 to 1.0
0
Nitrogen (N), % 0
0.21 to 0.32
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 0.1 to 0.6
0