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EN 1.7779 Steel vs. EN 1.4612 Stainless Steel

Both EN 1.7779 steel and EN 1.4612 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.7779 steel and the bottom bar is EN 1.4612 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
11
Fatigue Strength, MPa 430
860 to 950
Impact Strength: V-Notched Charpy, J 38
11 to 22
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 500
1010 to 1110
Tensile Strength: Ultimate (UTS), MPa 810
1690 to 1850
Tensile Strength: Yield (Proof), MPa 660
1570 to 1730

Thermal Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
16
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.8
3.6
Embodied Energy, MJ/kg 41
50
Embodied Water, L/kg 64
140

Common Calculations

PREN (Pitting Resistance) 5.0
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
190 to 210
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
60 to 65
Strength to Weight: Bending, points 25
40 to 43
Thermal Shock Resistance, points 23
58 to 63

Alloy Composition

Aluminum (Al), % 0 to 0.040
1.4 to 1.8
Carbon (C), % 0.17 to 0.23
0 to 0.015
Chromium (Cr), % 3.0 to 3.3
11 to 12.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 93.8 to 95.4
71.5 to 75.5
Manganese (Mn), % 0.3 to 0.5
0 to 0.1
Molybdenum (Mo), % 0.5 to 0.6
1.8 to 2.3
Nickel (Ni), % 0 to 0.3
10.2 to 11.3
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.025
0 to 0.010
Silicon (Si), % 0.15 to 0.35
0 to 0.1
Sulfur (S), % 0 to 0.010
0 to 0.0050
Titanium (Ti), % 0
0.2 to 0.5
Vanadium (V), % 0.45 to 0.55
0