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EN 1.4527 Stainless Steel vs. EN 1.7779 Steel

Both EN 1.4527 stainless steel and EN 1.7779 steel are iron alloys. They have 48% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4527 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 200
190
Elongation at Break, % 40
16
Fatigue Strength, MPa 170
430
Impact Strength: V-Notched Charpy, J 67
38
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 480
810
Tensile Strength: Yield (Proof), MPa 190
660

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Maximum Temperature: Mechanical, °C 1100
470
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
39
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 32
4.0
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.6
2.8
Embodied Energy, MJ/kg 78
41
Embodied Water, L/kg 210
64

Common Calculations

PREN (Pitting Resistance) 29
5.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
120
Resilience: Unit (Modulus of Resilience), kJ/m3 95
1150
Stiffness to Weight: Axial, points 14
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 4.0
11
Thermal Shock Resistance, points 12
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0 to 0.060
0.17 to 0.23
Chromium (Cr), % 19 to 22
3.0 to 3.3
Copper (Cu), % 3.0 to 4.0
0 to 0.3
Iron (Fe), % 37.4 to 48.5
93.8 to 95.4
Manganese (Mn), % 0 to 1.5
0.3 to 0.5
Molybdenum (Mo), % 2.0 to 3.0
0.5 to 0.6
Nickel (Ni), % 27.5 to 30.5
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.5
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.010
Vanadium (V), % 0
0.45 to 0.55