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EN 1.7711 Steel vs. S21800 Stainless Steel

Both EN 1.7711 steel and S21800 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 28 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 1.7711 steel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 280
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16 to 22
40
Fatigue Strength, MPa 290 to 520
330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 440 to 570
510
Tensile Strength: Ultimate (UTS), MPa 690 to 930
740
Tensile Strength: Yield (Proof), MPa 400 to 800
390

Thermal Properties

Latent Heat of Fusion, J/g 250
340
Maximum Temperature: Mechanical, °C 430
900
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 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 3.0
15
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 2.3
3.1
Embodied Energy, MJ/kg 32
45
Embodied Water, L/kg 54
150

Common Calculations

PREN (Pitting Resistance) 2.9
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 140
250
Resilience: Unit (Modulus of Resilience), kJ/m3 430 to 1690
390
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 24 to 33
27
Strength to Weight: Bending, points 22 to 27
24
Thermal Shock Resistance, points 24 to 32
17

Alloy Composition

Aluminum (Al), % 0 to 0.015
0
Carbon (C), % 0.36 to 0.44
0 to 0.1
Chromium (Cr), % 0.9 to 1.2
16 to 18
Iron (Fe), % 96 to 97.5
59.1 to 65.4
Manganese (Mn), % 0.45 to 0.85
7.0 to 9.0
Molybdenum (Mo), % 0.5 to 0.65
0
Nickel (Ni), % 0
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0 to 0.025
0 to 0.060
Silicon (Si), % 0 to 0.4
3.5 to 4.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.25 to 0.35
0