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EN 1.4537 Stainless Steel vs. EN 1.4615 Stainless Steel

Both EN 1.4537 stainless steel and EN 1.4615 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 65% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4537 stainless steel and the bottom bar is EN 1.4615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
150
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 42
50
Fatigue Strength, MPa 290
190
Impact Strength: V-Notched Charpy, J 91
91
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
76
Shear Strength, MPa 480
360
Tensile Strength: Ultimate (UTS), MPa 700
500
Tensile Strength: Yield (Proof), MPa 330
200

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 450
400
Maximum Temperature: Mechanical, °C 1100
840
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1390
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 34
13
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.1
2.8
Embodied Energy, MJ/kg 84
40
Embodied Water, L/kg 220
140

Common Calculations

PREN (Pitting Resistance) 46
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
200
Resilience: Unit (Modulus of Resilience), kJ/m3 270
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 3.7
4.1
Thermal Shock Resistance, points 15
11

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 24 to 26
14 to 16
Copper (Cu), % 1.0 to 2.0
2.0 to 4.0
Iron (Fe), % 36.3 to 46.1
63.1 to 72.5
Manganese (Mn), % 0 to 2.0
7.0 to 9.0
Molybdenum (Mo), % 4.7 to 5.7
0 to 0.8
Nickel (Ni), % 24 to 27
4.5 to 6.0
Nitrogen (N), % 0.17 to 0.25
0.020 to 0.060
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.010