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EN 1.4550 Stainless Steel vs. EN 1.4362 Stainless Steel

Both EN 1.4550 stainless steel and EN 1.4362 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4550 stainless steel and the bottom bar is EN 1.4362 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 42
25
Fatigue Strength, MPa 210
320
Impact Strength: V-Notched Charpy, J 90
90
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Shear Strength, MPa 430
470
Tensile Strength: Ultimate (UTS), MPa 620
730
Tensile Strength: Yield (Proof), MPa 230
460

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 480
440
Maximum Temperature: Mechanical, °C 940
1060
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 18
14
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.6
2.9
Embodied Energy, MJ/kg 51
41
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 18
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
160
Resilience: Unit (Modulus of Resilience), kJ/m3 140
530
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
26
Strength to Weight: Bending, points 21
23
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 14
20

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 17 to 19
22 to 24.5
Copper (Cu), % 0
0.1 to 0.6
Iron (Fe), % 64.9 to 74
65.5 to 74.3
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
0.1 to 0.6
Nickel (Ni), % 9.0 to 12
3.5 to 5.5
Niobium (Nb), % 0 to 1.0
0
Nitrogen (N), % 0
0.050 to 0.2
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015