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EN 1.4525 Stainless Steel vs. AISI 444 Stainless Steel

Both EN 1.4525 stainless steel and AISI 444 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4525 stainless steel and the bottom bar is AISI 444 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.6 to 13
23
Fatigue Strength, MPa 480 to 540
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 1030 to 1250
470
Tensile Strength: Yield (Proof), MPa 840 to 1120
310

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 430
580
Maximum Temperature: Mechanical, °C 860
930
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 18
23
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.8
3.4
Embodied Energy, MJ/kg 39
47
Embodied Water, L/kg 130
130

Common Calculations

PREN (Pitting Resistance) 18
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 68 to 130
95
Resilience: Unit (Modulus of Resilience), kJ/m3 1820 to 3230
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 36 to 45
17
Strength to Weight: Bending, points 29 to 33
17
Thermal Diffusivity, mm2/s 4.7
6.2
Thermal Shock Resistance, points 34 to 41
16

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.025
Chromium (Cr), % 15 to 17
17.5 to 19.5
Copper (Cu), % 2.5 to 4.0
0
Iron (Fe), % 70.4 to 79
73.3 to 80.8
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.8
1.8 to 2.5
Nickel (Ni), % 3.5 to 5.5
0 to 1.0
Niobium (Nb), % 0 to 0.35
0.2 to 0.8
Nitrogen (N), % 0 to 0.050
0 to 0.035
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030
Titanium (Ti), % 0
0.2 to 0.8