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EN 1.4807 Stainless Steel vs. EN 1.7779 Steel

Both EN 1.4807 stainless steel and EN 1.7779 steel are iron alloys. They have 46% of their average alloy composition in common. There are 31 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 EN 1.4807 stainless steel and the bottom bar is EN 1.7779 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
240
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 4.5
16
Fatigue Strength, MPa 120
430
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 480
810
Tensile Strength: Yield (Proof), MPa 250
660

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Maximum Temperature: Mechanical, °C 1000
470
Melting Completion (Liquidus), °C 1390
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
39
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 39
4.0
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 6.8
2.8
Embodied Energy, MJ/kg 97
41
Embodied Water, L/kg 190
64

Common Calculations

PREN (Pitting Resistance) 19
5.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 18
120
Resilience: Unit (Modulus of Resilience), kJ/m3 160
1150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
29
Strength to Weight: Bending, points 17
25
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 12
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0.3 to 0.5
0.17 to 0.23
Chromium (Cr), % 17 to 20
3.0 to 3.3
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 36.6 to 46.7
93.8 to 95.4
Manganese (Mn), % 0 to 2.0
0.3 to 0.5
Molybdenum (Mo), % 0 to 0.5
0.5 to 0.6
Nickel (Ni), % 34 to 36
0 to 0.3
Niobium (Nb), % 1.0 to 1.8
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 1.0 to 2.5
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.010
Vanadium (V), % 0
0.45 to 0.55