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EN 1.4903 Stainless Steel vs. EN 1.7365 Steel

Both EN 1.4903 stainless steel and EN 1.7365 steel are iron alloys. They have a very high 95% 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 1.4903 stainless steel and the bottom bar is EN 1.7365 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 21
18
Fatigue Strength, MPa 320 to 330
320
Impact Strength: V-Notched Charpy, J 42 to 46
31
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
74
Tensile Strength: Ultimate (UTS), MPa 670 to 680
700
Tensile Strength: Yield (Proof), MPa 500
470

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Maximum Temperature: Mechanical, °C 650
510
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
40
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0
9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
4.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.8
Embodied Energy, MJ/kg 36
24
Embodied Water, L/kg 88
70

Common Calculations

PREN (Pitting Resistance) 13
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 650
580
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
25
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 7.0
11
Thermal Shock Resistance, points 23
20

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.080 to 0.12
0.12 to 0.19
Chromium (Cr), % 8.0 to 9.5
4.0 to 6.0
Copper (Cu), % 0 to 0.3
0 to 0.3
Iron (Fe), % 87.1 to 90.5
91.2 to 94.9
Manganese (Mn), % 0.3 to 0.6
0.5 to 0.8
Molybdenum (Mo), % 0.85 to 1.1
0.45 to 0.65
Nickel (Ni), % 0 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.025
Vanadium (V), % 0.18 to 0.25
0 to 0.050