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AISI 304 Stainless Steel vs. EN 1.8550 Steel

Both AISI 304 stainless steel and EN 1.8550 steel are iron alloys. They have 74% of their average alloy composition in common. There are 32 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 AISI 304 stainless steel and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 360
300
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 8.0 to 43
11
Fatigue Strength, MPa 210 to 440
470
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 400 to 690
600
Tensile Strength: Ultimate (UTS), MPa 580 to 1180
1000
Tensile Strength: Yield (Proof), MPa 230 to 860
760

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 710
440
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
40
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 15
3.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.0
1.7
Embodied Energy, MJ/kg 43
23
Embodied Water, L/kg 150
67

Common Calculations

PREN (Pitting Resistance) 20
2.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 250
100
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1870
1550
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 42
36
Strength to Weight: Bending, points 20 to 32
29
Thermal Diffusivity, mm2/s 4.2
11
Thermal Shock Resistance, points 12 to 25
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0 to 0.080
0.3 to 0.37
Chromium (Cr), % 18 to 20
1.5 to 1.8
Iron (Fe), % 66.5 to 74
94.4 to 96.3
Manganese (Mn), % 0 to 2.0
0.4 to 0.7
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 8.0 to 10.5
0.85 to 1.2
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 0.75
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035