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S17400 Stainless Steel vs. EN 1.4634 Stainless Steel

Both S17400 stainless steel and EN 1.4634 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S17400 stainless steel and the bottom bar is EN 1.4634 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 21
21
Fatigue Strength, MPa 380 to 670
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 570 to 830
340
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
540
Tensile Strength: Yield (Proof), MPa 580 to 1250
280

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 450
500
Maximum Temperature: Mechanical, °C 850
900
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
21
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 14
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.9
Embodied Energy, MJ/kg 39
42
Embodied Water, L/kg 130
140

Common Calculations

PREN (Pitting Resistance) 16
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
93
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 49
20
Strength to Weight: Bending, points 27 to 35
19
Thermal Diffusivity, mm2/s 4.5
5.8
Thermal Shock Resistance, points 30 to 46
19

Alloy Composition

Aluminum (Al), % 0
0.2 to 1.5
Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 15 to 17
17.5 to 18.5
Copper (Cu), % 3.0 to 5.0
0 to 0.5
Iron (Fe), % 70.4 to 78.9
74.9 to 81.8
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 3.0 to 5.0
0 to 0.5
Niobium (Nb), % 0.15 to 0.45
0.3 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.050
Silicon (Si), % 0 to 1.0
0.2 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.050