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EN 1.4436 Stainless Steel vs. EN 1.4597 Stainless Steel

Both EN 1.4436 stainless steel and EN 1.4597 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 87% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4436 stainless steel and the bottom bar is EN 1.4597 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 42
45
Fatigue Strength, MPa 220
300
Impact Strength: V-Notched Charpy, J 90
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Shear Strength, MPa 430
470
Tensile Strength: Ultimate (UTS), MPa 620
680
Tensile Strength: Yield (Proof), MPa 240
330

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 960
860
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1400
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 19
11
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 3.9
2.5
Embodied Energy, MJ/kg 54
36
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 27
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
250
Resilience: Unit (Modulus of Resilience), kJ/m3 150
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
25
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 4.0
4.1
Thermal Shock Resistance, points 14
15

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.1
Chromium (Cr), % 16.5 to 18.5
15 to 18
Copper (Cu), % 0
2.0 to 3.5
Iron (Fe), % 62.3 to 70.5
63 to 76.4
Manganese (Mn), % 0 to 2.0
6.5 to 9.0
Molybdenum (Mo), % 2.5 to 3.0
0 to 1.0
Nickel (Ni), % 10.5 to 13
0 to 3.0
Nitrogen (N), % 0 to 0.1
0.1 to 0.3
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.030