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S15500 Stainless Steel vs. EN 1.8550 Steel

Both S15500 stainless steel and EN 1.8550 steel are iron alloys. They have 79% 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 S15500 stainless steel and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 290 to 430
300
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 6.8 to 16
11
Fatigue Strength, MPa 350 to 650
470
Impact Strength: V-Notched Charpy, J 7.8 to 53
34
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 540 to 870
600
Tensile Strength: Ultimate (UTS), MPa 890 to 1490
1000
Tensile Strength: Yield (Proof), MPa 590 to 1310
760

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 820
440
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
40
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 13
3.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.7
1.7
Embodied Energy, MJ/kg 39
23
Embodied Water, L/kg 130
67

Common Calculations

PREN (Pitting Resistance) 15
2.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 120
100
Resilience: Unit (Modulus of Resilience), kJ/m3 890 to 4460
1550
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32 to 53
36
Strength to Weight: Bending, points 26 to 37
29
Thermal Diffusivity, mm2/s 4.6
11
Thermal Shock Resistance, points 30 to 50
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0 to 0.070
0.3 to 0.37
Chromium (Cr), % 14 to 15.5
1.5 to 1.8
Copper (Cu), % 2.5 to 4.5
0
Iron (Fe), % 71.9 to 79.9
94.4 to 96.3
Manganese (Mn), % 0 to 1.0
0.4 to 0.7
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 3.5 to 5.5
0.85 to 1.2
Niobium (Nb), % 0.15 to 0.45
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035