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EN 1.4317 Stainless Steel vs. EN 1.4646 Stainless Steel

Both EN 1.4317 stainless steel and EN 1.4646 stainless steel are iron alloys. They have 81% 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 1.4317 stainless steel and the bottom bar is EN 1.4646 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
34
Fatigue Strength, MPa 380
340
Impact Strength: V-Notched Charpy, J 56
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 860
750
Tensile Strength: Yield (Proof), MPa 630
430

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 770
910
Melting Completion (Liquidus), °C 1440
1390
Melting Onset (Solidus), °C 1400
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 11
17

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.4
2.8
Embodied Energy, MJ/kg 33
41
Embodied Water, L/kg 110
160

Common Calculations

PREN (Pitting Resistance) 14
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
220
Resilience: Unit (Modulus of Resilience), kJ/m3 1010
460
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31
27
Strength to Weight: Bending, points 26
24
Thermal Shock Resistance, points 30
16

Alloy Composition

Carbon (C), % 0 to 0.060
0.020 to 0.1
Chromium (Cr), % 12 to 13.5
17 to 19
Copper (Cu), % 0
1.5 to 3.0
Iron (Fe), % 78.7 to 84.5
59 to 67.3
Manganese (Mn), % 0 to 1.0
10.5 to 12.5
Molybdenum (Mo), % 0 to 0.7
0 to 0.5
Nickel (Ni), % 3.5 to 5.0
3.5 to 4.5
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.050
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.015