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EN 1.4550 Stainless Steel vs. EN 1.4104 Stainless Steel

Both EN 1.4550 stainless steel and EN 1.4104 stainless steel are iron alloys. They have 87% 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 1.4550 stainless steel and the bottom bar is EN 1.4104 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 42
11 to 23
Fatigue Strength, MPa 210
230 to 310
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 430
400 to 450
Tensile Strength: Ultimate (UTS), MPa 620
630 to 750
Tensile Strength: Yield (Proof), MPa 230
350 to 560

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 480
410
Maximum Temperature: Mechanical, °C 940
860
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 18
8.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.6
2.2
Embodied Energy, MJ/kg 51
30
Embodied Water, L/kg 140
120

Common Calculations

PREN (Pitting Resistance) 18
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
77 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 140
310 to 800
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
23 to 27
Strength to Weight: Bending, points 21
21 to 24
Thermal Diffusivity, mm2/s 4.0
6.7
Thermal Shock Resistance, points 14
22 to 27

Alloy Composition

Carbon (C), % 0 to 0.080
0.1 to 0.17
Chromium (Cr), % 17 to 19
15.5 to 17.5
Iron (Fe), % 64.9 to 74
78.8 to 84.1
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0
0.2 to 0.6
Nickel (Ni), % 9.0 to 12
0
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0.15 to 0.35