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EN 1.7720 Steel vs. EN 1.4841 Stainless Steel

Both EN 1.7720 steel and EN 1.4841 stainless steel are iron alloys. They have 53% 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 1.7720 steel and the bottom bar is EN 1.4841 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19
32
Fatigue Strength, MPa 230
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 590
650
Tensile Strength: Yield (Proof), MPa 340
260

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 410
1150
Melting Completion (Liquidus), °C 1470
1380
Melting Onset (Solidus), °C 1430
1340
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
25
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.2
4.3
Embodied Energy, MJ/kg 30
62
Embodied Water, L/kg 51
190

Common Calculations

PREN (Pitting Resistance) 2.1
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 97
170
Resilience: Unit (Modulus of Resilience), kJ/m3 300
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21
23
Strength to Weight: Bending, points 20
21
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 17
15

Alloy Composition

Carbon (C), % 0.1 to 0.15
0 to 0.2
Chromium (Cr), % 0.3 to 0.5
24 to 26
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 96.6 to 98.6
47.1 to 55.5
Manganese (Mn), % 0.4 to 0.7
0 to 2.0
Molybdenum (Mo), % 0.4 to 0.6
0
Nickel (Ni), % 0 to 0.4
19 to 22
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.45
1.5 to 2.5
Sulfur (S), % 0 to 0.020
0 to 0.015
Vanadium (V), % 0.22 to 0.3
0