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EN 1.6771 Steel vs. S21603 Stainless Steel

Both EN 1.6771 steel and S21603 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.6771 steel and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 350
200
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.0 to 8.7
45
Fatigue Strength, MPa 440 to 680
360
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 930 to 1180
690
Tensile Strength: Yield (Proof), MPa 740 to 1140
390

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 440
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 5.0
17
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 1.9
3.6
Embodied Energy, MJ/kg 25
50
Embodied Water, L/kg 58
160

Common Calculations

PREN (Pitting Resistance) 2.5
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 75 to 93
270
Resilience: Unit (Modulus of Resilience), kJ/m3 1460 to 3450
380
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33 to 41
25
Strength to Weight: Bending, points 27 to 31
22
Thermal Shock Resistance, points 27 to 35
15

Alloy Composition

Carbon (C), % 0.27 to 0.33
0 to 0.030
Chromium (Cr), % 0.8 to 1.2
17.5 to 22
Iron (Fe), % 92.2 to 95
57.6 to 67.8
Manganese (Mn), % 0.6 to 1.0
7.5 to 9.0
Molybdenum (Mo), % 0.3 to 0.6
2.0 to 3.0
Nickel (Ni), % 3.0 to 4.0
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.6
0 to 0.75
Sulfur (S), % 0 to 0.020
0 to 0.030