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EN 1.4123 Stainless Steel vs. EN 1.4309 Stainless Steel

Both EN 1.4123 stainless steel and EN 1.4309 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4123 stainless steel and the bottom bar is EN 1.4309 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 250
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 720 to 810
490

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 840
960
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 23
15
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 10
16
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 4.2
3.1
Embodied Energy, MJ/kg 62
45
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 24
21
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 29
18
Strength to Weight: Bending, points 23 to 25
18
Thermal Diffusivity, mm2/s 6.3
4.1
Thermal Shock Resistance, points 26 to 29
11

Alloy Composition

Carbon (C), % 0.35 to 0.5
0 to 0.030
Chromium (Cr), % 14 to 16.5
18 to 20
Iron (Fe), % 76.7 to 84.6
64.2 to 73
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 1.0 to 2.5
0
Nickel (Ni), % 0 to 0.5
9.0 to 12
Nitrogen (N), % 0.1 to 0.3
0 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0 to 1.5
0