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EN 1.7779 Steel vs. S21600 Stainless Steel

Both EN 1.7779 steel and S21600 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.7779 steel and the bottom bar is S21600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
200
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
46
Fatigue Strength, MPa 430
360
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
79
Shear Strength, MPa 500
500
Tensile Strength: Ultimate (UTS), MPa 810
710
Tensile Strength: Yield (Proof), MPa 660
390

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 470
990
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
17
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.8
3.6
Embodied Energy, MJ/kg 41
50
Embodied Water, L/kg 64
160

Common Calculations

PREN (Pitting Resistance) 5.0
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
270
Resilience: Unit (Modulus of Resilience), kJ/m3 1150
370
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 Shock Resistance, points 23
15

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.17 to 0.23
0 to 0.080
Chromium (Cr), % 3.0 to 3.3
17.5 to 22
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 93.8 to 95.4
57.6 to 67.8
Manganese (Mn), % 0.3 to 0.5
7.5 to 9.0
Molybdenum (Mo), % 0.5 to 0.6
2.0 to 3.0
Nickel (Ni), % 0 to 0.3
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0.15 to 0.35
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030
Vanadium (V), % 0.45 to 0.55
0