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EN 1.7338 Steel vs. EN 1.4409 Stainless Steel

Both EN 1.7338 steel and EN 1.4409 stainless steel are iron alloys. They have 70% 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 1.7338 steel and the bottom bar is EN 1.4409 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
34
Fatigue Strength, MPa 220
180
Impact Strength: V-Notched Charpy, J 38
90
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 490
490
Tensile Strength: Yield (Proof), MPa 300
220

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 430
990
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 3.1
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
3.7
Embodied Energy, MJ/kg 21
52
Embodied Water, L/kg 53
160

Common Calculations

PREN (Pitting Resistance) 3.1
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 97
140
Resilience: Unit (Modulus of Resilience), kJ/m3 240
120
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 18
18
Thermal Diffusivity, mm2/s 11
4.1
Thermal Shock Resistance, points 14
11

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 1.0 to 1.5
18 to 20
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 95.4 to 97.8
61.7 to 71
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.45 to 0.65
2.0 to 2.5
Nickel (Ni), % 0 to 0.3
9.0 to 12
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0.5 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.025