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EN 1.4509 Stainless Steel vs. AISI 304 Stainless Steel

Both EN 1.4509 stainless steel and AISI 304 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4509 stainless steel and the bottom bar is AISI 304 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
170 to 360
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 21
8.0 to 43
Fatigue Strength, MPa 170
210 to 440
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 330
400 to 690
Tensile Strength: Ultimate (UTS), MPa 530
580 to 1180
Tensile Strength: Yield (Proof), MPa 260
230 to 860

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 570
420
Maximum Temperature: Mechanical, °C 890
710
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
16
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
15
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 41
43
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 18
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
86 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 180
140 to 1870
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
21 to 42
Strength to Weight: Bending, points 19
20 to 32
Thermal Diffusivity, mm2/s 6.8
4.2
Thermal Shock Resistance, points 19
12 to 25

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 17.5 to 18.5
18 to 20
Iron (Fe), % 77.8 to 82.1
66.5 to 74
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 0
8.0 to 10.5
Niobium (Nb), % 0.3 to 1.0
0
Nitrogen (N), % 0
0 to 0.1
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
Titanium (Ti), % 0.1 to 0.6
0