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EN 1.4646 Stainless Steel vs. EN 1.6579 Steel

Both EN 1.4646 stainless steel and EN 1.6579 steel are iron alloys. They have 68% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4646 stainless steel and the bottom bar is EN 1.6579 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
260 to 290
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
11 to 14
Fatigue Strength, MPa 340
380 to 570
Impact Strength: V-Notched Charpy, J 90
35 to 41
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 750
850 to 980
Tensile Strength: Yield (Proof), MPa 430
600 to 910

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 910
440
Melting Completion (Liquidus), °C 1390
1460
Melting Onset (Solidus), °C 1340
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 13
3.7
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.7
Embodied Energy, MJ/kg 41
22
Embodied Water, L/kg 160
56

Common Calculations

PREN (Pitting Resistance) 23
2.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
100 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 460
950 to 2210
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
30 to 35
Strength to Weight: Bending, points 24
25 to 28
Thermal Shock Resistance, points 16
25 to 29

Alloy Composition

Carbon (C), % 0.020 to 0.1
0.32 to 0.38
Chromium (Cr), % 17 to 19
1.4 to 1.7
Copper (Cu), % 1.5 to 3.0
0
Iron (Fe), % 59 to 67.3
94.2 to 96.1
Manganese (Mn), % 10.5 to 12.5
0.6 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.15 to 0.35
Nickel (Ni), % 3.5 to 4.5
1.4 to 1.7
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.050
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.030