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S32550 Stainless Steel vs. EN 1.4318 Stainless Steel

Both S32550 stainless steel and EN 1.4318 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S32550 stainless steel and the bottom bar is EN 1.4318 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 21
44
Fatigue Strength, MPa 400
340
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Shear Strength, MPa 540
520
Tensile Strength: Ultimate (UTS), MPa 860
740
Tensile Strength: Yield (Proof), MPa 620
380

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 1100
910
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 20
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.8
2.8
Embodied Energy, MJ/kg 53
39
Embodied Water, L/kg 180
130

Common Calculations

PREN (Pitting Resistance) 40
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
280
Resilience: Unit (Modulus of Resilience), kJ/m3 940
360
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31
27
Strength to Weight: Bending, points 26
23
Thermal Diffusivity, mm2/s 4.4
4.0
Thermal Shock Resistance, points 23
17

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.030
Chromium (Cr), % 24 to 27
16.5 to 18.5
Copper (Cu), % 1.5 to 2.5
0
Iron (Fe), % 57.2 to 67
70.2 to 77.4
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 2.9 to 3.9
0
Nickel (Ni), % 4.5 to 6.5
6.0 to 8.0
Nitrogen (N), % 0.1 to 0.25
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015