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EN 1.6771 Steel vs. S38815 Stainless Steel

Both EN 1.6771 steel and S38815 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.6771 steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 350
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 8.0 to 8.7
34
Fatigue Strength, MPa 440 to 680
230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Tensile Strength: Ultimate (UTS), MPa 930 to 1180
610
Tensile Strength: Yield (Proof), MPa 740 to 1140
290

Thermal Properties

Latent Heat of Fusion, J/g 250
370
Maximum Temperature: Mechanical, °C 440
860
Melting Completion (Liquidus), °C 1460
1360
Melting Onset (Solidus), °C 1420
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
19
Density, g/cm3 7.9
7.5
Embodied Carbon, kg CO2/kg material 1.9
3.8
Embodied Energy, MJ/kg 25
54
Embodied Water, L/kg 58
140

Common Calculations

PREN (Pitting Resistance) 2.5
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 75 to 93
170
Resilience: Unit (Modulus of Resilience), kJ/m3 1460 to 3450
220
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33 to 41
22
Strength to Weight: Bending, points 27 to 31
21
Thermal Shock Resistance, points 27 to 35
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0.27 to 0.33
0 to 0.030
Chromium (Cr), % 0.8 to 1.2
13 to 15
Copper (Cu), % 0
0.75 to 1.5
Iron (Fe), % 92.2 to 95
56.1 to 67
Manganese (Mn), % 0.6 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.6
0.75 to 1.5
Nickel (Ni), % 3.0 to 4.0
13 to 17
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.6
5.5 to 6.5
Sulfur (S), % 0 to 0.020
0 to 0.020