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S17400 Stainless Steel vs. EN 1.4122 Stainless Steel

Both S17400 stainless steel and EN 1.4122 stainless steel are iron alloys. They have a moderately high 92% 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 1.4122 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 21
14
Fatigue Strength, MPa 380 to 670
260 to 360
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 570 to 830
480 to 520
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
790 to 850
Tensile Strength: Yield (Proof), MPa 580 to 1250
450 to 630

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 450
400
Maximum Temperature: Mechanical, °C 850
870
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 14
9.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.4
Embodied Energy, MJ/kg 39
33
Embodied Water, L/kg 130
120

Common Calculations

PREN (Pitting Resistance) 16
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
93 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
520 to 1000
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 49
28 to 31
Strength to Weight: Bending, points 27 to 35
25 to 26
Thermal Diffusivity, mm2/s 4.5
4.0
Thermal Shock Resistance, points 30 to 46
28 to 30

Alloy Composition

Carbon (C), % 0 to 0.070
0.33 to 0.45
Chromium (Cr), % 15 to 17
15.5 to 17.5
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 70.4 to 78.9
77.2 to 83.4
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0
0.8 to 1.3
Nickel (Ni), % 3.0 to 5.0
0 to 1.0
Niobium (Nb), % 0.15 to 0.45
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015