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EN 1.6781 Steel vs. S30615 Stainless Steel

Both EN 1.6781 steel and S30615 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 29 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 1.6781 steel and the bottom bar is S30615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
39
Fatigue Strength, MPa 450
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 830
690
Tensile Strength: Yield (Proof), MPa 680
310

Thermal Properties

Latent Heat of Fusion, J/g 260
340
Maximum Temperature: Mechanical, °C 450
960
Melting Completion (Liquidus), °C 1460
1370
Melting Onset (Solidus), °C 1420
1320
Specific Heat Capacity, J/kg-K 470
500
Thermal Conductivity, W/m-K 44
14
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
19
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 1.9
3.7
Embodied Energy, MJ/kg 25
53
Embodied Water, L/kg 60
170

Common Calculations

PREN (Pitting Resistance) 3.3
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
220
Resilience: Unit (Modulus of Resilience), kJ/m3 1220
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
25
Strength to Weight: Bending, points 25
23
Thermal Diffusivity, mm2/s 12
3.7
Thermal Shock Resistance, points 24
16

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.5
Carbon (C), % 0.15 to 0.19
0.16 to 0.24
Chromium (Cr), % 1.3 to 1.8
17 to 19.5
Iron (Fe), % 92.6 to 94.6
56.7 to 65.3
Manganese (Mn), % 0.55 to 0.8
0 to 2.0
Molybdenum (Mo), % 0.45 to 0.6
0
Nickel (Ni), % 3.0 to 3.5
13.5 to 16
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.5
3.2 to 4.0
Sulfur (S), % 0 to 0.015
0 to 0.030