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EN 1.4028 Stainless Steel vs. AISI 309S Stainless Steel

Both EN 1.4028 stainless steel and AISI 309S stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 32 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 1.4028 stainless steel and the bottom bar is AISI 309S stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
42
Fatigue Strength, MPa 230 to 400
210
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
78
Shear Strength, MPa 410 to 550
400
Tensile Strength: Ultimate (UTS), MPa 660 to 930
580
Tensile Strength: Yield (Proof), MPa 390 to 730
230

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 390
440
Maximum Temperature: Mechanical, °C 760
1080
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 30
15
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
19
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.9
3.6
Embodied Energy, MJ/kg 27
51
Embodied Water, L/kg 100
170

Common Calculations

PREN (Pitting Resistance) 13
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 96
190
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 33
21
Strength to Weight: Bending, points 22 to 27
20
Thermal Diffusivity, mm2/s 8.1
4.0
Thermal Shock Resistance, points 23 to 32
13

Alloy Composition

Carbon (C), % 0.26 to 0.35
0 to 0.080
Chromium (Cr), % 12 to 14
22 to 24
Iron (Fe), % 83.1 to 87.7
58.1 to 66
Manganese (Mn), % 0 to 1.5
0 to 2.0
Nickel (Ni), % 0
12 to 15
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030