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S21900 Stainless Steel vs. EN 1.7710 Steel

Both S21900 stainless steel and EN 1.7710 steel are iron alloys. They have 66% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S21900 stainless steel and the bottom bar is EN 1.7710 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
280 to 320
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 50
6.8 to 11
Fatigue Strength, MPa 380
500 to 620
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 710
930 to 1070
Tensile Strength: Yield (Proof), MPa 390
800 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Maximum Temperature: Mechanical, °C 980
440
Melting Completion (Liquidus), °C 1400
1470
Melting Onset (Solidus), °C 1350
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
41
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 15
3.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.0
2.2
Embodied Energy, MJ/kg 43
30
Embodied Water, L/kg 160
57

Common Calculations

PREN (Pitting Resistance) 25
4.5
Resilience: Ultimate (Unit Rupture Work), MJ/m3 300
73 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 380
1680 to 2970
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26
33 to 38
Strength to Weight: Bending, points 23
27 to 30
Thermal Diffusivity, mm2/s 3.8
11
Thermal Shock Resistance, points 15
27 to 31

Alloy Composition

Carbon (C), % 0 to 0.080
0.12 to 0.18
Chromium (Cr), % 19 to 21.5
1.3 to 1.8
Iron (Fe), % 59.4 to 67.4
95.1 to 97
Manganese (Mn), % 8.0 to 10
0.6 to 1.0
Molybdenum (Mo), % 0
0.8 to 1.0
Nickel (Ni), % 5.5 to 7.5
0
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.15 to 0.25