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EN 1.8505 Steel vs. EN 1.4971 Stainless Steel

Both EN 1.8505 steel and EN 1.4971 stainless steel are iron alloys. They have a modest 34% of their average alloy composition in common, which, by itself, doesn't mean much. 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 1.8505 steel and the bottom bar is EN 1.4971 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 320
240
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 13
34
Fatigue Strength, MPa 540
270
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
81
Shear Strength, MPa 630
530
Tensile Strength: Ultimate (UTS), MPa 1050
800
Tensile Strength: Yield (Proof), MPa 860
340

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 39
13
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
70
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 1.6
7.6
Embodied Energy, MJ/kg 22
110
Embodied Water, L/kg 65
300

Common Calculations

PREN (Pitting Resistance) 2.6
38
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
220
Resilience: Unit (Modulus of Resilience), kJ/m3 1950
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 37
26
Strength to Weight: Bending, points 30
23
Thermal Diffusivity, mm2/s 11
3.4
Thermal Shock Resistance, points 31
19

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.28 to 0.35
0.080 to 0.16
Chromium (Cr), % 1.5 to 1.8
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Iron (Fe), % 95.4 to 97.1
24.3 to 37.1
Manganese (Mn), % 0.4 to 0.7
0 to 2.0
Molybdenum (Mo), % 0.2 to 0.4
2.5 to 3.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.015
Tungsten (W), % 0
2.0 to 3.0