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EN 1.3975 Stainless Steel vs. EN 1.8550 Steel

Both EN 1.3975 stainless steel and EN 1.8550 steel are iron alloys. They have 65% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.3975 stainless steel and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
300
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 27
11
Fatigue Strength, MPa 230
470
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 660
1000
Tensile Strength: Yield (Proof), MPa 320
760

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 910
440
Melting Completion (Liquidus), °C 1360
1450
Melting Onset (Solidus), °C 1320
1410
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 15
3.4
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.3
1.7
Embodied Energy, MJ/kg 47
23
Embodied Water, L/kg 150
67

Common Calculations

PREN (Pitting Resistance) 21
2.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
100
Resilience: Unit (Modulus of Resilience), kJ/m3 270
1550
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 24
36
Strength to Weight: Bending, points 22
29
Thermal Shock Resistance, points 15
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0 to 0.050
0.3 to 0.37
Chromium (Cr), % 16 to 18
1.5 to 1.8
Iron (Fe), % 58.2 to 65.4
94.4 to 96.3
Manganese (Mn), % 7.0 to 9.0
0.4 to 0.7
Molybdenum (Mo), % 0 to 1.0
0.15 to 0.25
Nickel (Ni), % 8.0 to 9.0
0.85 to 1.2
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 3.5 to 4.5
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035