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EN 1.4439 Stainless Steel vs. AISI 305 Stainless Steel

Both EN 1.4439 stainless steel and AISI 305 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 33 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 1.4439 stainless steel and the bottom bar is AISI 305 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
170 to 220
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
34 to 45
Fatigue Strength, MPa 270
210 to 280
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 470
400 to 470
Tensile Strength: Ultimate (UTS), MPa 680
580 to 710
Tensile Strength: Yield (Proof), MPa 310
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 980
540
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
16
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 22
16
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.5
3.2
Embodied Energy, MJ/kg 61
45
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 35
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
200 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 240
130 to 320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
20 to 25
Strength to Weight: Bending, points 22
20 to 23
Thermal Diffusivity, mm2/s 3.8
4.2
Thermal Shock Resistance, points 15
13 to 15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 16.5 to 18.5
17 to 19
Iron (Fe), % 58.7 to 66.9
65.1 to 72.5
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 12.5 to 14.5
10.5 to 13
Nitrogen (N), % 0.12 to 0.22
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030