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S17400 Stainless Steel vs. EN 1.4640 Stainless Steel

Both S17400 stainless steel and EN 1.4640 stainless steel are iron alloys. They have a moderately high 93% 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 1.4640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 440
190 to 200
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 21
51
Fatigue Strength, MPa 380 to 670
230 to 250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 570 to 830
440 to 460
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
620 to 650
Tensile Strength: Yield (Proof), MPa 580 to 1250
240 to 260

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 850
930
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 14
14
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.8
Embodied Energy, MJ/kg 39
40
Embodied Water, L/kg 130
150

Common Calculations

PREN (Pitting Resistance) 16
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
250 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
150 to 170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 49
22 to 23
Strength to Weight: Bending, points 27 to 35
21
Thermal Diffusivity, mm2/s 4.5
4.0
Thermal Shock Resistance, points 30 to 46
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.070
0.030 to 0.080
Chromium (Cr), % 15 to 17
18 to 19
Copper (Cu), % 3.0 to 5.0
1.3 to 2.0
Iron (Fe), % 70.4 to 78.9
67.4 to 73.6
Manganese (Mn), % 0 to 1.0
1.5 to 4.0
Nickel (Ni), % 3.0 to 5.0
5.5 to 6.9
Niobium (Nb), % 0.15 to 0.45
0
Nitrogen (N), % 0
0.030 to 0.11
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015