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S17400 Stainless Steel vs. EN 1.4903 Stainless Steel

Both S17400 stainless steel and EN 1.4903 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 33 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 S17400 stainless steel and the bottom bar is EN 1.4903 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 21
20 to 21
Fatigue Strength, MPa 380 to 670
320 to 330
Impact Strength: V-Notched Charpy, J 7.6 to 86
42 to 46
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
75
Shear Strength, MPa 570 to 830
420
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
670 to 680
Tensile Strength: Yield (Proof), MPa 580 to 1250
500

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 450
380
Maximum Temperature: Mechanical, °C 850
650
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 17
26
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
4.0

Otherwise Unclassified Properties

Base Metal Price, % relative 14
7.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 39
36
Embodied Water, L/kg 130
88

Common Calculations

PREN (Pitting Resistance) 16
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
650
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 49
24
Strength to Weight: Bending, points 27 to 35
22
Thermal Diffusivity, mm2/s 4.5
7.0
Thermal Shock Resistance, points 30 to 46
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0 to 0.070
0.080 to 0.12
Chromium (Cr), % 15 to 17
8.0 to 9.5
Copper (Cu), % 3.0 to 5.0
0 to 0.3
Iron (Fe), % 70.4 to 78.9
87.1 to 90.5
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 0
0.85 to 1.1
Nickel (Ni), % 3.0 to 5.0
0 to 0.4
Niobium (Nb), % 0.15 to 0.45
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0
0.18 to 0.25