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EN 1.4615 Stainless Steel vs. EN 1.4470 Stainless Steel

Both EN 1.4615 stainless steel and EN 1.4470 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have a moderately high 90% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4615 stainless steel and the bottom bar is EN 1.4470 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 50
23
Fatigue Strength, MPa 190
320
Impact Strength: V-Notched Charpy, J 91
34
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 500
680
Tensile Strength: Yield (Proof), MPa 200
480

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 400
430
Maximum Temperature: Mechanical, °C 840
1060
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
18
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
17
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
3.6
Embodied Energy, MJ/kg 40
49
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 17
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
140
Resilience: Unit (Modulus of Resilience), kJ/m3 99
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 4.1
4.8
Thermal Shock Resistance, points 11
18

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 14 to 16
21 to 23
Copper (Cu), % 2.0 to 4.0
0
Iron (Fe), % 63.1 to 72.5
63.7 to 71.9
Manganese (Mn), % 7.0 to 9.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.8
2.5 to 3.5
Nickel (Ni), % 4.5 to 6.0
4.5 to 6.5
Nitrogen (N), % 0.020 to 0.060
0.12 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.025