MakeItFrom.com
Menu (ESC)

EN 1.4418 Stainless Steel vs. EN 1.4309 Stainless Steel

Both EN 1.4418 stainless steel and EN 1.4309 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 32 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 1.4418 stainless steel and the bottom bar is EN 1.4309 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 16 to 20
34
Fatigue Strength, MPa 350 to 480
170
Impact Strength: V-Notched Charpy, J 62 to 90
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 860 to 1000
490
Tensile Strength: Yield (Proof), MPa 540 to 790
210

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 870
960
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 10
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 13
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
3.1
Embodied Energy, MJ/kg 39
45
Embodied Water, L/kg 130
150

Common Calculations

PREN (Pitting Resistance) 20
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
140
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1590
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 36
18
Strength to Weight: Bending, points 26 to 28
18
Thermal Diffusivity, mm2/s 4.0
4.1
Thermal Shock Resistance, points 31 to 36
11

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 15 to 17
18 to 20
Iron (Fe), % 73.2 to 80.2
64.2 to 73
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0.8 to 1.5
0
Nickel (Ni), % 4.0 to 6.0
9.0 to 12
Nitrogen (N), % 0 to 0.020
0 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 0.7
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.025