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EN 1.4612 Stainless Steel vs. EN 1.6781 Steel

Both EN 1.4612 stainless steel and EN 1.6781 steel are iron alloys. They have 79% of their average alloy composition in common. There are 25 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 1.4612 stainless steel and the bottom bar is EN 1.6781 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
17
Fatigue Strength, MPa 860 to 950
450
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 1690 to 1850
830
Tensile Strength: Yield (Proof), MPa 1570 to 1730
680

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 790
450
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 16
5.0
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 3.6
1.9
Embodied Energy, MJ/kg 50
25
Embodied Water, L/kg 140
60

Common Calculations

PREN (Pitting Resistance) 19
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 210
130
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 60 to 65
29
Strength to Weight: Bending, points 40 to 43
25
Thermal Shock Resistance, points 58 to 63
24

Alloy Composition

Aluminum (Al), % 1.4 to 1.8
0
Carbon (C), % 0 to 0.015
0.15 to 0.19
Chromium (Cr), % 11 to 12.5
1.3 to 1.8
Iron (Fe), % 71.5 to 75.5
92.6 to 94.6
Manganese (Mn), % 0 to 0.1
0.55 to 0.8
Molybdenum (Mo), % 1.8 to 2.3
0.45 to 0.6
Nickel (Ni), % 10.2 to 11.3
3.0 to 3.5
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.010
0 to 0.015
Silicon (Si), % 0 to 0.1
0 to 0.5
Sulfur (S), % 0 to 0.0050
0 to 0.015
Titanium (Ti), % 0.2 to 0.5
0