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S21603 Stainless Steel vs. EN 1.6781 Steel

Both S21603 stainless steel and EN 1.6781 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 (8, in this case) are not shown.

For each property being compared, the top bar is S21603 stainless steel and the bottom bar is EN 1.6781 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
250
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
17
Fatigue Strength, MPa 360
450
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 690
830
Tensile Strength: Yield (Proof), MPa 390
680

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Maximum Temperature: Mechanical, °C 990
450
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 17
5.0
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.6
1.9
Embodied Energy, MJ/kg 50
25
Embodied Water, L/kg 160
60

Common Calculations

PREN (Pitting Resistance) 34
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
130
Resilience: Unit (Modulus of Resilience), kJ/m3 380
1220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
29
Strength to Weight: Bending, points 22
25
Thermal Shock Resistance, points 15
24

Alloy Composition

Carbon (C), % 0 to 0.030
0.15 to 0.19
Chromium (Cr), % 17.5 to 22
1.3 to 1.8
Iron (Fe), % 57.6 to 67.8
92.6 to 94.6
Manganese (Mn), % 7.5 to 9.0
0.55 to 0.8
Molybdenum (Mo), % 2.0 to 3.0
0.45 to 0.6
Nickel (Ni), % 5.0 to 7.0
3.0 to 3.5
Nitrogen (N), % 0.25 to 0.5
0
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 0.75
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015