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EN 1.4958 Stainless Steel vs. EN 1.8505 Steel

Both EN 1.4958 stainless steel and EN 1.8505 steel are iron alloys. They have 49% 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 1.4958 stainless steel and the bottom bar is EN 1.8505 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
13
Fatigue Strength, MPa 170
540
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 430
630
Tensile Strength: Ultimate (UTS), MPa 630
1050
Tensile Strength: Yield (Proof), MPa 190
860

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1090
440
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
39
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 30
2.8
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.3
1.6
Embodied Energy, MJ/kg 75
22
Embodied Water, L/kg 200
65

Common Calculations

PREN (Pitting Resistance) 21
2.6
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
120
Resilience: Unit (Modulus of Resilience), kJ/m3 95
1950
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
37
Strength to Weight: Bending, points 20
30
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 15
31

Alloy Composition

Aluminum (Al), % 0.2 to 0.5
0.8 to 1.2
Carbon (C), % 0.030 to 0.080
0.28 to 0.35
Chromium (Cr), % 19 to 22
1.5 to 1.8
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 41.1 to 50.6
95.4 to 97.1
Manganese (Mn), % 0 to 1.5
0.4 to 0.7
Molybdenum (Mo), % 0
0.2 to 0.4
Nickel (Ni), % 30 to 32.5
0
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0 to 0.7
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.035
Titanium (Ti), % 0.2 to 0.5
0