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EN 1.4310 Stainless Steel vs. EN 1.8550 Steel

Both EN 1.4310 stainless steel and EN 1.8550 steel are iron alloys. They have 76% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4310 stainless steel and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 270
300
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14 to 45
11
Fatigue Strength, MPa 240 to 330
470
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 510 to 550
600
Tensile Strength: Ultimate (UTS), MPa 730 to 900
1000
Tensile Strength: Yield (Proof), MPa 260 to 570
760

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 910
440
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 18
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 14
3.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.9
1.7
Embodied Energy, MJ/kg 42
23
Embodied Water, L/kg 140
67

Common Calculations

PREN (Pitting Resistance) 20
2.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 260
100
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 830
1550
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 32
36
Strength to Weight: Bending, points 23 to 27
29
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 15 to 18
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0.050 to 0.15
0.3 to 0.37
Chromium (Cr), % 16 to 19
1.5 to 1.8
Iron (Fe), % 66.4 to 78
94.4 to 96.3
Manganese (Mn), % 0 to 2.0
0.4 to 0.7
Molybdenum (Mo), % 0 to 0.8
0.15 to 0.25
Nickel (Ni), % 6.0 to 9.5
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 2.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.035