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EN 1.4309 Stainless Steel vs. AISI 441 Stainless Steel

Both EN 1.4309 stainless steel and AISI 441 stainless steel are iron alloys. They have 89% 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 1.4309 stainless steel and the bottom bar is AISI 441 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
23
Fatigue Strength, MPa 170
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 490
470
Tensile Strength: Yield (Proof), MPa 210
270

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 420
550
Maximum Temperature: Mechanical, °C 960
910
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
23
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 16
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.1
2.8
Embodied Energy, MJ/kg 45
41
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 21
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
92
Resilience: Unit (Modulus of Resilience), kJ/m3 110
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
17
Strength to Weight: Bending, points 18
17
Thermal Diffusivity, mm2/s 4.1
6.1
Thermal Shock Resistance, points 11
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 18 to 20
17.5 to 19.5
Iron (Fe), % 64.2 to 73
76 to 82.2
Manganese (Mn), % 0 to 2.0
0 to 1.0
Nickel (Ni), % 9.0 to 12
0 to 1.0
Niobium (Nb), % 0
0.3 to 0.9
Nitrogen (N), % 0 to 0.2
0 to 0.030
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030
Titanium (Ti), % 0
0.1 to 0.5