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EN 1.4541 Stainless Steel vs. EN 1.7779 Steel

Both EN 1.4541 stainless steel and EN 1.7779 steel are iron alloys. They have 74% 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 1.4541 stainless steel and the bottom bar is EN 1.7779 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
240
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14 to 40
16
Fatigue Strength, MPa 190 to 330
430
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 410 to 550
500
Tensile Strength: Ultimate (UTS), MPa 600 to 900
810
Tensile Strength: Yield (Proof), MPa 220 to 570
660

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Maximum Temperature: Mechanical, °C 940
470
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
39
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 16
4.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.2
2.8
Embodied Energy, MJ/kg 46
41
Embodied Water, L/kg 140
64

Common Calculations

PREN (Pitting Resistance) 18
5.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
120
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 830
1150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 32
29
Strength to Weight: Bending, points 20 to 27
25
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 14 to 20
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0 to 0.080
0.17 to 0.23
Chromium (Cr), % 17 to 19
3.0 to 3.3
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 65.2 to 74
93.8 to 95.4
Manganese (Mn), % 0 to 2.0
0.3 to 0.5
Molybdenum (Mo), % 0
0.5 to 0.6
Nickel (Ni), % 9.0 to 12
0 to 0.3
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0 to 0.7
0
Vanadium (V), % 0
0.45 to 0.55