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EN 1.8550 Steel vs. S30615 Stainless Steel

Both EN 1.8550 steel and S30615 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.8550 steel and the bottom bar is S30615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
39
Fatigue Strength, MPa 470
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 600
470
Tensile Strength: Ultimate (UTS), MPa 1000
690
Tensile Strength: Yield (Proof), MPa 760
310

Thermal Properties

Latent Heat of Fusion, J/g 250
340
Maximum Temperature: Mechanical, °C 440
960
Melting Completion (Liquidus), °C 1450
1370
Melting Onset (Solidus), °C 1410
1320
Specific Heat Capacity, J/kg-K 480
500
Thermal Conductivity, W/m-K 40
14
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
19
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 1.7
3.7
Embodied Energy, MJ/kg 23
53
Embodied Water, L/kg 67
170

Common Calculations

PREN (Pitting Resistance) 2.3
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
220
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 36
25
Strength to Weight: Bending, points 29
23
Thermal Diffusivity, mm2/s 11
3.7
Thermal Shock Resistance, points 29
16

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0.8 to 1.5
Carbon (C), % 0.3 to 0.37
0.16 to 0.24
Chromium (Cr), % 1.5 to 1.8
17 to 19.5
Iron (Fe), % 94.4 to 96.3
56.7 to 65.3
Manganese (Mn), % 0.4 to 0.7
0 to 2.0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.85 to 1.2
13.5 to 16
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.4
3.2 to 4.0
Sulfur (S), % 0 to 0.035
0 to 0.030