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EN 1.7720 Steel vs. EN 1.4852 Stainless Steel

Both EN 1.7720 steel and EN 1.4852 stainless steel are iron alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. There are 31 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 1.7720 steel and the bottom bar is EN 1.4852 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19
4.6
Fatigue Strength, MPa 230
120
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 590
490
Tensile Strength: Yield (Proof), MPa 340
250

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 410
1100
Melting Completion (Liquidus), °C 1470
1380
Melting Onset (Solidus), °C 1430
1340
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
13
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
41
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.2
6.9
Embodied Energy, MJ/kg 30
100
Embodied Water, L/kg 51
220

Common Calculations

PREN (Pitting Resistance) 2.1
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 97
19
Resilience: Unit (Modulus of Resilience), kJ/m3 300
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21
17
Strength to Weight: Bending, points 20
18
Thermal Diffusivity, mm2/s 11
3.4
Thermal Shock Resistance, points 17
11

Alloy Composition

Carbon (C), % 0.1 to 0.15
0.3 to 0.5
Chromium (Cr), % 0.3 to 0.5
24 to 27
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 96.6 to 98.6
29.6 to 40.9
Manganese (Mn), % 0.4 to 0.7
0 to 2.0
Molybdenum (Mo), % 0.4 to 0.6
0 to 0.5
Nickel (Ni), % 0 to 0.4
33 to 36
Niobium (Nb), % 0
0.8 to 1.8
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.45
1.0 to 2.5
Sulfur (S), % 0 to 0.020
0 to 0.030
Vanadium (V), % 0.22 to 0.3
0