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S17400 Stainless Steel vs. EN 1.7706 Steel

Both S17400 stainless steel and EN 1.7706 steel are iron alloys. They have 77% 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 1.7706 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 440
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 21
17
Fatigue Strength, MPa 380 to 670
330
Impact Strength: V-Notched Charpy, J 7.6 to 86
30
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
690
Tensile Strength: Yield (Proof), MPa 580 to 1250
500

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 850
440
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
40
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 14
3.7
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.7
2.3
Embodied Energy, MJ/kg 39
32
Embodied Water, L/kg 130
57

Common Calculations

PREN (Pitting Resistance) 16
4.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
110
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
670
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32 to 49
24
Strength to Weight: Bending, points 27 to 35
22
Thermal Diffusivity, mm2/s 4.5
11
Thermal Shock Resistance, points 30 to 46
20

Alloy Composition

Carbon (C), % 0 to 0.070
0.15 to 0.2
Chromium (Cr), % 15 to 17
1.2 to 1.5
Copper (Cu), % 3.0 to 5.0
0 to 0.3
Iron (Fe), % 70.4 to 78.9
94.7 to 97.1
Manganese (Mn), % 0 to 1.0
0.5 to 0.9
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 3.0 to 5.0
0 to 0.4
Niobium (Nb), % 0.15 to 0.45
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0
0.2 to 0.3