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EN 1.3551 Steel vs. EN 1.4911 Stainless Steel

Both EN 1.3551 steel and EN 1.4911 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.3551 steel and the bottom bar is EN 1.4911 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
76
Tensile Strength: Ultimate (UTS), MPa 720
1070

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 530
700
Melting Completion (Liquidus), °C 1490
1450
Melting Onset (Solidus), °C 1450
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 36
20
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.6
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 9.9
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
20
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.9
3.4
Embodied Energy, MJ/kg 71
49
Embodied Water, L/kg 82
130

Common Calculations

PREN (Pitting Resistance) 18
14
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
38
Strength to Weight: Bending, points 23
30
Thermal Diffusivity, mm2/s 9.8
5.4
Thermal Shock Resistance, points 21
37

Alloy Composition

Boron (B), % 0
0.0050 to 0.015
Carbon (C), % 0.77 to 0.85
0.050 to 0.12
Chromium (Cr), % 3.9 to 4.3
9.8 to 11.2
Cobalt (Co), % 0
5.0 to 7.0
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 88.8 to 91.1
75.7 to 83.8
Manganese (Mn), % 0.15 to 0.35
0.3 to 1.3
Molybdenum (Mo), % 4.0 to 4.5
0.5 to 1.0
Nickel (Ni), % 0
0.2 to 1.2
Niobium (Nb), % 0
0.2 to 0.5
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0.1 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 0 to 0.25
0 to 0.7
Vanadium (V), % 0.9 to 1.1
0.1 to 0.4