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EN 1.4361 Stainless Steel vs. EN 1.3955 Stainless Steel

Both EN 1.4361 stainless steel and EN 1.3955 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have a moderately high 92% 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 1.4361 stainless steel and the bottom bar is EN 1.3955 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 43
23
Fatigue Strength, MPa 220
150
Impact Strength: V-Notched Charpy, J 90
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 630
520
Tensile Strength: Yield (Proof), MPa 250
220

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 940
930
Melting Completion (Liquidus), °C 1370
1430
Melting Onset (Solidus), °C 1330
1380
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 19
16
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 3.6
3.2
Embodied Energy, MJ/kg 52
45
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 19
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
95
Resilience: Unit (Modulus of Resilience), kJ/m3 160
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
18
Strength to Weight: Bending, points 21
18
Thermal Diffusivity, mm2/s 3.7
4.1
Thermal Shock Resistance, points 15
15

Alloy Composition

Carbon (C), % 0 to 0.015
0 to 0.15
Chromium (Cr), % 16.5 to 18.5
16.5 to 18.5
Iron (Fe), % 58.7 to 65.8
65.5 to 73.5
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.2
0 to 0.75
Nickel (Ni), % 14 to 16
10 to 12
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 3.7 to 4.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030