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EN 1.4317 Stainless Steel vs. EN 1.7338 Steel

Both EN 1.4317 stainless steel and EN 1.7338 steel are iron alloys. They have 84% of their average alloy composition in common. There are 31 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 1.4317 stainless steel and the bottom bar is EN 1.7338 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
23
Fatigue Strength, MPa 380
220
Impact Strength: V-Notched Charpy, J 56
38
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 860
490
Tensile Strength: Yield (Proof), MPa 630
300

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 770
430
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 26
40
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 10
3.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.4
1.6
Embodied Energy, MJ/kg 33
21
Embodied Water, L/kg 110
53

Common Calculations

PREN (Pitting Resistance) 14
3.1
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
97
Resilience: Unit (Modulus of Resilience), kJ/m3 1010
240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31
17
Strength to Weight: Bending, points 26
18
Thermal Diffusivity, mm2/s 7.0
11
Thermal Shock Resistance, points 30
14

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0 to 0.060
0 to 0.15
Chromium (Cr), % 12 to 13.5
1.0 to 1.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 78.7 to 84.5
95.4 to 97.8
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.7
0.45 to 0.65
Nickel (Ni), % 3.5 to 5.0
0 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 1.0
0.5 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.010