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EN 1.4874 Stainless Steel vs. EN 1.7720 Steel

Both EN 1.4874 stainless steel and EN 1.7720 steel are iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 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 1.4874 stainless steel and the bottom bar is EN 1.7720 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
180
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 6.7
19
Fatigue Strength, MPa 180
230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 480
590
Tensile Strength: Yield (Proof), MPa 360
340

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1150
410
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
40
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
2.8
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 7.6
2.2
Embodied Energy, MJ/kg 110
30
Embodied Water, L/kg 290
51

Common Calculations

PREN (Pitting Resistance) 34
2.1
Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
97
Resilience: Unit (Modulus of Resilience), kJ/m3 310
300
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16
21
Strength to Weight: Bending, points 16
20
Thermal Diffusivity, mm2/s 3.3
11
Thermal Shock Resistance, points 11
17

Alloy Composition

Carbon (C), % 0.35 to 0.65
0.1 to 0.15
Chromium (Cr), % 19 to 22
0.3 to 0.5
Cobalt (Co), % 18.5 to 22
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 23 to 38.9
96.6 to 98.6
Manganese (Mn), % 0 to 2.0
0.4 to 0.7
Molybdenum (Mo), % 2.5 to 3.0
0.4 to 0.6
Nickel (Ni), % 18 to 22
0 to 0.4
Niobium (Nb), % 0.75 to 1.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 2.0 to 3.0
0
Vanadium (V), % 0
0.22 to 0.3